European quantum software and open-source tools

Open-source quantum software from European universities, research centres, EU-funded projects and companies: SDKs, compilers, simulators, error correction, quantum networking and QKD, post-quantum cryptography, benchmarking and control-stack software. Every owner organisation was checked against the Research Organization Registry (ROR) or an official page.

Quantum software stack on the technology hub lists every item the portal classifies under the software stack: projects, organisations, documents and more.

Open-source quantum software whose owner organisation was checked against ROR or an official page; licences were checked in each repository. Repository facts come from the GitHub REST API, release facts from PyPI and DOIs from Zenodo, each with its retrieval date; descriptions are the maintainers' own text. A referral list, not an endorsement or a security assessment. Candidates found automatically wait for editorial review.

Directory compiled 2026-10-21. Repository, release and DOI facts retrieved 2026-10-29; they are read again every week from the GitHub REST API, the PyPI JSON API and the Zenodo REST API.

33 entries (30 active in the last 12 months)

OpenQL

Category: Compiler, language or verification tool
Owner organisation: Developed by QuTech · ROR record
Country: Netherlands
Licence: Apache-2.0, permissive licence (checked in the repository's licence file)
Last activity: 2024-09-03; no activity in the last 12 months
Latest release: Version 0.12.2 on PyPI, 2024-01-09
On GitHub: 110 stars; main language C++
Summary: Compiler framework that turns quantum programs written in Python or C++ into instructions for quantum accelerators.
Maintainers' description: OpenQL: A Portable Quantum Programming Framework for Quantum Accelerators. https://dl.acm.org/doi/10.1145/3474222 (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository QuTech-Delft/OpenQL (retrieved 2026-10-21); PyPI project qutechopenql (retrieved 2026-10-21)

libQASM

Category: Compiler, language or verification tool
Owner organisation: Developed by QuTech · ROR record
Country: Netherlands
Licence: Apache-2.0, permissive licence (checked in the repository's licence file)
Last activity: 2026-10-26; active in the last 12 months
Latest release: Version 1.6.0 on PyPI, 2026-10-14
On GitHub: 23 stars; main language C++
Summary: Library that parses and checks programs written in the cQASM quantum assembly language.
Maintainers' description: libQASM: Library to parse cQASM files (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository QuTech-Delft/libqasm (retrieved 2026-10-21); PyPI project libqasm (retrieved 2026-10-21)

QX simulator

Category: Simulator or emulator
Owner organisation: Developed by QuTech · ROR record
Country: Netherlands
Licence: Apache-2.0, permissive licence (checked in the repository's licence file)
Last activity: 2026-10-23; active in the last 12 months
Latest release: Version 0.11.0 on PyPI, 2026-10-23
On GitHub: 20 stars; main language C++
Summary: Simulator that runs cQASM quantum programs on a classical computer.
Maintainers' description: QX Simulator (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository QuTech-Delft/qx-simulator (retrieved 2026-10-21); PyPI project qxelarator (retrieved 2026-10-21)

Quantum Inspire SDK

Category: SDK or programming framework
Owner organisation: Developed by QuTech · ROR record
Country: Netherlands
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-26; active in the last 12 months
Latest release: Version 4.2.0 on PyPI, 2026-10-19
On GitHub: 75 stars; main language Python
Summary: Command-line tool and Python library for managing projects and running jobs on the Quantum Inspire platform of QuTech.
Maintainers' description: Quantum Inspire SDK (the maintainers' own text on GitHub)
Links: Repository · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository QuTech-Delft/quantuminspire (retrieved 2026-10-21); PyPI project quantuminspire (retrieved 2026-10-21)

SimulaQron

Category: Quantum networking and QKD
Owner organisation: Developed by QuTech · ROR record
Country: Netherlands
Licence: BSD-3-Clause, permissive licence (checked in the repository's licence file)
Last activity: 2026-05-15; active in the last 12 months
Latest release: Version 4.1.2 on PyPI, 2026-05-15
On GitHub: 136 stars; main language Python
Summary: Simulator of quantum network nodes for developing quantum internet applications.
Maintainers' description: Quantum Network Simulator for Application Programming (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository SoftwareQuTech/SimulaQron (retrieved 2026-10-21); PyPI project simulaqron (retrieved 2026-10-21)

NetQASM

Category: Quantum networking and QKD
Owner organisation: Developed by QuTech · ROR record
Country: Netherlands
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-03-10; active in the last 12 months
Latest release: Version 2.3.0 on PyPI, 2026-03-10
On GitHub: 53 stars; main language Python
Summary: Instruction set and Python SDK for writing applications that run on quantum networks.
Links: Repository · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository QuTech-Delft/netqasm (retrieved 2026-10-21); PyPI project netqasm (retrieved 2026-10-21)

SquidASM

Category: Quantum networking and QKD
Owner organisation: Developed by QuTech · ROR record
Country: Netherlands
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-02-17; active in the last 12 months
Latest release: Version 0.13.6 on PyPI, 2025-11-25
On GitHub: 30 stars; main language Python
Summary: Simulator that runs quantum network applications written with NetQASM on the NetSquid simulation engine.
Links: Repository · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository QuTech-Delft/squidasm (retrieved 2026-10-21); PyPI project squidasm (retrieved 2026-10-21)

MQT Core

Category: Compiler, language or verification tool
Owner organisation: Developed by Technical University of Munich · organisation page on Quantum Europe · ROR record
Country: Germany
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-29; active in the last 12 months
Latest release: Version 4.1.1 on PyPI, 2026-10-13
On GitHub: 136 stars; main language C++
Summary: Core C++ and Python libraries of the Munich Quantum Toolkit, including its compiler collection and decision-diagram data structures.
Maintainers' description: MQT Core - Reusable C++20 and Python libraries for quantum computing: the MQT Compiler Collection, built on MLIR and LLVM, together with decision diagrams, QIR execution, QDMI device access, SDK and… (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository munich-quantum-toolkit/core (retrieved 2026-10-21); PyPI project mqt-core (retrieved 2026-10-21)

MQT DDSIM

Category: Simulator or emulator
Owner organisation: Developed by Technical University of Munich · organisation page on Quantum Europe · ROR record
Country: Germany
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-28; active in the last 12 months
Latest release: Version 2.7.0 on PyPI, 2026-10-12
On GitHub: 163 stars; main language C++
Summary: Quantum circuit simulator based on decision diagrams.
Maintainers' description: MQT DDSIM - A Quantum Circuit Simulator Based on Decision Diagrams (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository munich-quantum-toolkit/ddsim (retrieved 2026-10-21); PyPI project mqt-ddsim (retrieved 2026-10-21)

MQT QMAP

Category: Compiler, language or verification tool
Owner organisation: Developed by Technical University of Munich · organisation page on Quantum Europe · ROR record
Country: Germany
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-26; active in the last 12 months
Latest release: Version 3.11.0 on PyPI, 2026-10-12
On GitHub: 144 stars; main language C++
Summary: Tool that maps quantum circuits onto the connectivity and gate set of a target device.
Maintainers' description: MQT QMAP - A Tool for Quantum Circuit Mapping (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository munich-quantum-toolkit/qmap (retrieved 2026-10-21); PyPI project mqt-qmap (retrieved 2026-10-21)

MQT QCEC

Category: Compiler, language or verification tool
Owner organisation: Developed by Technical University of Munich · organisation page on Quantum Europe · ROR record
Country: Germany
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-26; active in the last 12 months
Latest release: Version 3.11.0 on PyPI, 2026-10-09
On GitHub: 121 stars; main language C++
Summary: Tool that checks whether two quantum circuits are equivalent, for example before and after compilation.
Maintainers' description: MQT QCEC - A Tool for Quantum Circuit Equivalence Checking (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository munich-quantum-toolkit/qcec (retrieved 2026-10-21); PyPI project mqt-qcec (retrieved 2026-10-21)

MQT Bench

Category: Benchmarking
Owner organisation: Developed by Technical University of Munich · organisation page on Quantum Europe · ROR record
Country: Germany
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-28; active in the last 12 months
Latest release: Version 2.3.0 on PyPI, 2026-09-12
On GitHub: 133 stars; main language Python
Summary: Collection of benchmark circuits at several levels of abstraction for evaluating quantum software tools.
Maintainers' description: MQT Bench - A Tool for Benchmarking Quantum Software Tools (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository munich-quantum-toolkit/bench (retrieved 2026-10-21); PyPI project mqt-bench (retrieved 2026-10-21)

MQT QECC

Category: Quantum error correction
Owner organisation: Developed by Technical University of Munich · organisation page on Quantum Europe · ROR record
Country: Germany
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-28; active in the last 12 months
Latest release: Version 2.0.0 on PyPI, 2026-07-13
On GitHub: 240 stars; main language Python
Summary: Tools for constructing, decoding and evaluating quantum error-correcting codes.
Maintainers' description: MQT QECC - Tools for Quantum Error Correcting Codes (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository munich-quantum-toolkit/qecc (retrieved 2026-10-21); PyPI project mqt.qecc (retrieved 2026-10-21)

Qrisp

Category: SDK or programming framework
Owner organisation: A project of Eclipse Foundation
Country: Belgium
Licence: EPL-2.0, weak copyleft licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-28; active in the last 12 months
Latest release: Version 0.9.10 on PyPI, 2026-10-17
On GitHub: 304 stars; main language Python
Summary: High-level programming framework for developing quantum algorithms, run as an Eclipse Foundation project.
Maintainers' description: Qrisp - The next generation of quantum algorithm development (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository eclipse-qrisp/Qrisp (retrieved 2026-10-21); PyPI project qrisp (retrieved 2026-10-21)

Pulser

Category: SDK or programming framework
Owner organisation: Developed by Pasqal · organisation page on Quantum Europe · ROR record
Country: France
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-27; active in the last 12 months
Latest release: Version 1.9.1 on PyPI, 2026-09-08
On GitHub: 254 stars; main language Python
Summary: Library for designing pulse sequences for neutral-atom quantum devices, with an emulator.
Maintainers' description: Library for pulse-level/analog control of neutral atom devices. Emulator with QuTiP. (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package · DOI 10.5281/zenodo.4707943
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository pasqal-io/Pulser (retrieved 2026-10-21); PyPI project pulser (retrieved 2026-10-21); Zenodo concept record 10.5281/zenodo.4707943 (retrieved 2026-10-21)

PyQTorch

Category: Simulator or emulator
Owner organisation: Developed by Pasqal · organisation page on Quantum Europe · ROR record
Country: France
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2025-06-20; no activity in the last 12 months
Latest release: Version 1.7.8 on PyPI, 2025-06-17
On GitHub: 48 stars; main language Python
Summary: State-vector and density-matrix simulator built on PyTorch, with automatic differentiation.
Maintainers' description: PyTorch-based state vector and density matrix simulator (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository pasqal-io/pyqtorch (retrieved 2026-10-21); PyPI project pyqtorch (retrieved 2026-10-21)

Perceval

Category: SDK or programming framework
Owner organisation: Developed by Quandela · organisation page on Quantum Europe · ROR record
Country: France
Licence: MIT, permissive licence (checked in the repository's licence file)
Last activity: 2026-10-01; active in the last 12 months
Latest release: Version 1.3.1 on PyPI, 2026-10-01
On GitHub: 211 stars; main language Python
Summary: Framework for programming and simulating photonic quantum computers.
Maintainers' description: An open source framework for programming photonic quantum computers (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository Quandela/Perceval (retrieved 2026-10-21); PyPI project perceval-quandela (retrieved 2026-10-21)

KQCircuits

Category: Control stack and hardware design
Owner organisation: Developed by IQM · ROR record
Country: Finland
Licence: GPL-3.0, copyleft licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-09-02; active in the last 12 months
Latest release: Version 4.9.14 on PyPI, 2026-09-02
On GitHub: 203 stars; main language Python
Summary: Python library for the automated design of superconducting quantum chips in the KLayout layout editor.
Maintainers' description: KLayout Python library for integrated quantum circuit design. (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package · DOI 10.5281/zenodo.4944796
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository iqm-finland/KQCircuits (retrieved 2026-10-21); PyPI project kqcircuits (retrieved 2026-10-21); Zenodo concept record 10.5281/zenodo.4944796 (retrieved 2026-10-21)

LabOne Q

Category: Control stack and hardware design
Owner organisation: Developed by Zurich Instruments
Country: Switzerland
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-26; active in the last 12 months
Latest release: Version 26.7.0 on PyPI, 2026-07-30
On GitHub: 58 stars; main language Python
Summary: Software framework for programming and running quantum computing experiments on Zurich Instruments control electronics.
Maintainers' description: Public repository for LabOne Q (the maintainers' own text on GitHub)
Links: Repository · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository zhinst/laboneq (retrieved 2026-10-21); PyPI project laboneq (retrieved 2026-10-21)

Qililab

Category: Control stack and hardware design
Owner organisation: Developed by Qilimanjaro Quantum Tech · organisation page on Quantum Europe · ROR record
Country: Spain
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-28; active in the last 12 months
Latest release: Version 0.33.3 on PyPI, 2026-07-29
On GitHub: 45 stars; main language Python
Summary: Quantum control library for characterising and calibrating qubits and running experiments on quantum hardware.
Maintainers' description: Qililab is a generic and scalable quantum control library used for fast characterization and calibration of quantum chips. Qililab also offers the ability to execute high-level quantum algorithms… (the maintainers' own text on GitHub)
Links: Repository · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository qilimanjaro-tech/qililab (retrieved 2026-10-21); PyPI project qililab (retrieved 2026-10-21)

qupulse

Category: Control stack and hardware design
Owner organisation: Developed by RWTH Aachen University · organisation page on Quantum Europe · ROR record
Country: Germany
Licence: LGPL-3.0-or-later, weak copyleft licence (checked in the repository's licence file)
Last activity: 2026-10-28; active in the last 12 months
Latest release: Version 0.10 on PyPI, 2025-07-01
On GitHub: 59 stars; main language Python
Summary: Toolkit for defining qubit control pulse sequences and playing them on arbitrary waveform generators.
Maintainers' description: Quantum Computing Toolkit for Qubit Control (the maintainers' own text on GitHub)
Links: Repository · PyPI package · DOI 10.5281/zenodo.2650139
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository qutech/qupulse (retrieved 2026-10-21); PyPI project qupulse (retrieved 2026-10-21); Zenodo concept record 10.5281/zenodo.2650139 (retrieved 2026-10-21)

qoqo

Category: SDK or programming framework
Owner organisation: Developed by HQS Quantum Simulations
Country: Germany
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-07-20; active in the last 12 months
Latest release: Version 1.22.2 on PyPI, 2026-07-15
On GitHub: 56 stars; main language Rust
Summary: Toolkit in Rust and Python for representing quantum programs and running them on different backends.
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository HQSquantumsimulations/qoqo (retrieved 2026-10-21); PyPI project qoqo (retrieved 2026-10-21)

QDMI (Quantum Device Management Interface)

Category: Control stack and hardware design
Owner organisation: Maintained by Munich Quantum Valley (MQV gGmbH)
Country: Germany
Licence: Apache-2.0 WITH LLVM-exception, permissive licence (checked in the repository's licence file)
Last activity: 2026-10-26; active in the last 12 months
On GitHub: 89 stars; main language C++
Summary: Interface through which quantum software stacks query and control quantum devices and their properties.
Maintainers' description: Quantum Device Management Interface (QDMI) (the maintainers' own text on GitHub)
Links: Repository · Documentation
Metadata: Source: GitHub REST API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository Munich-Quantum-Software-Stack/QDMI (retrieved 2026-10-21)

QuEST

Category: Simulator or emulator
Owner organisation: Development led by University of Edinburgh · organisation page on Quantum Europe · ROR record
Country: United Kingdom
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-13; active in the last 12 months
On GitHub: 497 stars; main language C++
Summary: Multithreaded, distributed and GPU-accelerated simulator of quantum computers.
Maintainers' description: A multithreaded, distributed, GPU-accelerated simulator of quantum computers (the maintainers' own text on GitHub)
Links: Repository · Documentation
Metadata: Source: GitHub REST API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository QuEST-Kit/QuEST (retrieved 2026-10-21)

ProjectQ

Category: SDK or programming framework
Owner organisation: First release developed at ETH Zurich · organisation page on Quantum Europe · ROR record
Country: Switzerland
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-19; active in the last 12 months
Latest release: Version 0.8.0 on PyPI, 2022-10-18
On GitHub: 976 stars; main language Python
Summary: Framework for writing, compiling and simulating quantum programs in Python.
Maintainers' description: ProjectQ: An open source software framework for quantum computing (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository ProjectQ-Framework/ProjectQ (retrieved 2026-10-21); PyPI project projectq (retrieved 2026-10-21)

Deltakit

Category: Quantum error correction
Owner organisation: Developed by Riverlane · ROR record
Country: United Kingdom
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-28; active in the last 12 months
Latest release: Version 0.10.2 on PyPI, 2026-10-12
On GitHub: 83 stars; main language Python
Summary: Software development kit for designing and running quantum error correction experiments.
Maintainers' description: Riverlane's quantum error correction SDK (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package · DOI 10.5281/zenodo.17145113
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository Deltakit/deltakit (retrieved 2026-10-21); PyPI project deltakit (retrieved 2026-10-21); Zenodo concept record 10.5281/zenodo.17145113 (retrieved 2026-10-21)

Qiskit provider for Alice & Bob

Category: SDK or programming framework
Owner organisation: Developed by Alice & Bob · organisation page on Quantum Europe · ROR record
Country: France
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-16; active in the last 12 months
Latest release: Version 3.0.0 on PyPI, 2026-10-16
On GitHub: 47 stars; main language Python
Summary: Qiskit provider for running circuits on the cat-qubit processors and emulators of Alice & Bob.
Maintainers' description: Qiskit provider to execute quantum circuits on Alice & Bob cat qubits (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository Alice-Bob-SW/qiskit-alice-bob-provider (retrieved 2026-10-21); PyPI project qiskit-alice-bob-provider (retrieved 2026-10-21)

LDPC4QKD

Category: Quantum networking and QKD
Owner organisation: Developed by Ludwig-Maximilians-Universität München · ROR record
Country: Germany
Licence: GPL-3.0, copyleft licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-13; active in the last 12 months
On GitHub: 26 stars; main language C++
Summary: Rate-adaptive LDPC codes and decoder for information reconciliation in quantum key distribution.
Maintainers' description: Rate adaptive LDPC based solutions for distributed source coding (the maintainers' own text on GitHub)
Links: Repository · DOI 10.5281/zenodo.5579246
Metadata: Source: GitHub REST API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository XQP-Munich/LDPC4QKD (retrieved 2026-10-21); Zenodo concept record 10.5281/zenodo.5579246 (retrieved 2026-10-21)

QOSST

Category: Quantum networking and QKD
Owner organisation: First developed at Sorbonne Université · organisation page on Quantum Europe · ROR record
Country: France
Licence: GPL-3.0, copyleft licence (checked in the package metadata (the repository has no licence file))
Last activity: 2024-06-29; no activity in the last 12 months
Latest release: Version 0.10.0 on PyPI, 2024-04-29
On GitHub: 23 stars; main language Python
Summary: Modular software platform for experimental continuous-variable quantum key distribution.
Maintainers' description: Quantum Open Software for Secure Transmissions (the maintainers' own text on GitHub)
Links: Repository · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository qosst/qosst (retrieved 2026-10-21); PyPI project qosst (retrieved 2026-10-21)

TNO QKD key-rate

Category: Quantum networking and QKD
Owner organisation: Developed by TNO (Netherlands Organisation for Applied Scientific Research) · organisation page on Quantum Europe · ROR record
Country: Netherlands
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-02-23; active in the last 12 months
Latest release: Version 2.0.4 on PyPI, 2026-02-23
On GitHub: 17 stars; main language Python
Summary: Python package that computes optimal protocol parameters and key rates for several QKD protocols.
Maintainers' description: Python code to compute optimal protocol parameters for different QKD protocols. (the maintainers' own text on GitHub)
Links: Repository · Documentation · PyPI package
Metadata: Source: GitHub REST API, PyPI JSON API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository TNO-Quantum/communication.qkd_key_rate (retrieved 2026-10-21); PyPI project tno.quantum.communication.qkd_key_rate (retrieved 2026-10-21)

QKD ETSI API C wrapper

Category: Quantum networking and QKD
Owner organisation: Developed by Universidad Carlos III de Madrid · organisation page on Quantum Europe · ROR record
Country: Spain
Licence: MIT, permissive licence (checked in the repository's licence file)
Last activity: 2026-08-14; active in the last 12 months
On GitHub: 10 stars; main language C
Summary: C library that wraps clients of the ETSI GS QKD 004 and 014 interfaces so that security protocols can use keys from QKD systems.
Maintainers' description: C wrapper for different ETSI GS QKD 004/014 API clients integrating Quantum Key Distribution (QKD) systems into security protocols. (the maintainers' own text on GitHub)
Links: Repository
Metadata: Source: GitHub REST API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository qursa-uc3m/qkd-etsi-api-c-wrapper (retrieved 2026-10-21)

QKD-KEM provider

Category: Post-quantum cryptography
Owner organisation: Developed by Universidad Carlos III de Madrid · organisation page on Quantum Europe · ROR record
Country: Spain
Licence: MIT, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-07-15; active in the last 12 months
On GitHub: 6 stars; main language C
Summary: OpenSSL provider that combines keys from QKD with post-quantum key encapsulation, built on the Open Quantum Safe provider.
Maintainers' description: OpenSSL 3.x and 4.x provider hybridizing QKD with post-quantum KEMs using the oqs-provider (the maintainers' own text on GitHub)
Links: Repository
Metadata: Source: GitHub REST API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository qursa-uc3m/qkd-kem-provider (retrieved 2026-10-21)

libcrux

Category: Post-quantum cryptography
Owner organisation: Maintained by CE Labs (CryptoEng UG)
Country: Germany
Licence: Apache-2.0, permissive licence (checked in licence detected by GitHub and checked in the repository)
Last activity: 2026-10-28; active in the last 12 months
On GitHub: 269 stars; main language C
Summary: Formally verified cryptography library in Rust that includes an ML-KEM post-quantum key encapsulation implementation.
Maintainers' description: The formally verified crypto library for Rust (the maintainers' own text on GitHub)
Links: Repository
Metadata: Source: GitHub REST API, retrieved 2026-10-29 by the weekly refresh; facts, not an assessment.
Source: GitHub repository celabshq/libcrux (retrieved 2026-10-21)

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