Schematic capture
LibrePCB
Draw your superconducting circuits in a friendly, open-source schematic editor.
Free · Open source · Apache License 2.0
Design ultra-fast, energy-efficient, quantum superconducting circuits
Harness the quantum properties of superconductivity. One installer gives you the schematic editor, the component library, the simulators and the plotting tool, ready to use.
One installer, the whole toolchain
From the first sketch to the final figure, everything is installed and pre-configured together.
Component library
SuperLibre
Ready-to-use superconductor parts: Josephson junctions, inductors, logic cells.
Netlist export
L2SPICE
Turns your LibrePCB schematics into simulation-ready SPICE netlists in one click.
Design & optimisation
JOINUS-D
The main cockpit: edit, simulate, analyse and optimise your circuits.
JSIMJoSIM
Simulators
JSIM & JoSIM
Two proven SPICE engines for Josephson-junction circuits, bundled and pre-configured.
Visualisation
FrugalPlot
Plot and compare simulation results, then export clean figures for your papers.
See it in action
Download FrugalEDA v1.0.0
Choose your system below. Each installer is about 140 to 220 MB. Released 11 October 2026. What's new?
Which Mac do I have? Apple Silicon or Intel
Click the Apple menu and choose About This Mac. If you see Chip: Apple M… (M1, M2, M3…), pick Apple Silicon. If you see Processor: Intel…, pick Intel.
Which Linux do I have? Distribution and processor
Open a terminal and run cat /etc/os-release for the distribution (Ubuntu, CentOS, Rocky, Alma, RHEL…) and uname -m for the processor: x86_64 means x64, aarch64 means arm64.
Windows
Pick Windows x64. It fits nearly every Windows 10 and 11 PC (Intel or AMD).
| System | Processor | File | SHA-256 | |
|---|---|---|---|---|
macOS | arm64 Apple Silicon Macs from late 2020 on (M1, M2, M3, M4, M5…) | frugaleda-installer-v1.0.0-macos-arm64.zip138 MB | efc697cdba0a… | Download |
macOS | x64 Intel Macs with an Intel processor (2020 and earlier) | frugaleda-installer-v1.0.0-macos-x64.zip155 MB | 240329a94375… | Download |
Windows 10 / 11 | x64 64-bit PC Almost every Windows PC (Intel or AMD) | frugaleda-installer-v1.0.0-windows-x64.exe160 MB | afdaa7e7fae8… | Download |
Ubuntu 24.04 | x64 64-bit PC Intel or AMD processor | frugaleda-installer-v1.0.0-ubuntu2404-x64.run186 MB | 3e2fb107add8… | Download |
Ubuntu 24.04 | arm64 ARM 64-bit Raspberry Pi 4/5, ARM servers | frugaleda-installer-v1.0.0-ubuntu2404-arm64.run206 MB | ada9de1c3c11… | Download |
CentOS Stream 9 | x64 64-bit PC Also RHEL 9, Rocky Linux 9, AlmaLinux 9 (Intel or AMD) | frugaleda-installer-v1.0.0-centos9-x64.run198 MB | bb4510e85708… | Download |
CentOS Stream 9 | arm64 ARM 64-bit Also RHEL 9, Rocky Linux 9, AlmaLinux 9 (ARM) | frugaleda-installer-v1.0.0-centos9-arm64.run218 MB | 3cbe5b017476… | Download |
Install in 3 steps
- Download the file for your system.
- Optional: check it, e.g.
shasum -a 256 <file>(macOS, Linux) orGet-FileHash <file>(Windows), and compare with the SHA-256 above. - Run it. macOS: unzip, then open FrugalEDA-Installer. Windows: double-click the .exe. Linux:
chmod +x <file>.run && ./<file>.run.
Watch and learn
▶Coming soon
FrugalEDA in 3 minutes
Overview: from schematic to simulation results.
▶Coming soon
Install FrugalEDA
Step-by-step installation on macOS, Windows and Linux.
▶Coming soon
Your first superconducting circuit
Design, simulate and plot a Josephson transmission line.
Support and funding
FrugalEDA is developed by the French SEFIRA Society, supported and funded through the NGI0 Core Fund, a fund established by NLnet with financial support from the European Commission’s Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 101092990.
FrugalEDA is built on LibrePCB, the free and open-source EDA software, which provides its schematic editor. If LibrePCB is useful to you, please consider supporting it.
FrugalEDA builds on long-standing developments on superconducting electronics at the University of Savoie Mont Blanc in France, supported by CNES, DGA and Campus France.
Cite FrugalEDA
Using FrugalEDA in your research? Please cite the software and the paper describing its simulation core.
@software{frugaleda,
title = {FrugalEDA: a design suite for energy-frugal superconductor electronics},
author = {{FrugalEDA developers}},
year = {2026},
version = {1.0.0},
url = {https://gitlab.com/frugaleda/frugaleda-installer/-/releases/v1.0.0-release}
}
@article{razmkhah2020joinus,
author = {Razmkhah, Sasan and Febvre, Pascal},
title = {{JOINUS}: A User-Friendly Open-Source Software to Simulate Digital Superconductor Circuits},
journal = {IEEE Transactions on Applied Superconductivity},
volume = {30},
number = {5},
pages = {1300807},
year = {2020},
doi = {10.1109/TASC.2020.2976600}
}
Join us 😉
Questions, bug reports or ideas? We'd love to hear from you.