Top 11 Python Hdl Projects

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1. amaranth

   1 9 2,066 7.0 Python

   A modern hardware definition language and toolchain based on Python

   

   Project mention: VHDL's Crown Jewel | news.ycombinator.com | 2026-03-30

   There are folks trying to make HDL easier, and vendor neutral. Not sure why people were upset by mentioning the project...

   https://github.com/amaranth-lang/amaranth

   While VHDL makes a fun academic toy language, it has always been Verilog in the commercial settings. Both languages can develop hard to trace bugs when the optimizer decides to simply remove things it thinks are unused. =3

2. SaaSHub

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3. nmigen

   2 3 687 1.8 Python

   A refreshed Python toolbox for building complex digital hardware. See https://gitlab.com/nmigen/nmigen

   

4. pymtl3

   3 5 463 2.5 Python

   Pymtl 3 (Mamba), an open-source Python-based hardware generation, simulation, and verification framework

   

5. PyRTL

   4 1 303 8.1 Python

   A collection of classes providing simple hardware specification, simulation, tracing, and testing suitable for teaching and research. Simplicity, usability, clarity, and extensibility are the overarching goals, rather than performance or optimization.

   

6. hdl_checker

   5 4 226 0.0 Python

   Repurposing existing HDL tools to help writing better code

   

7. pygears

   6 5 145 0.0 Python

   HW Design: A Functional Approach

   

8. cocotb-bus

   7 1 79 5.3 Python

   Pre-packaged testbenching tools and reusable bus interfaces for cocotb

   

9. sphinxcontrib-hdl-diagrams

   8 2 65 5.7 Python

   Sphinx Extension which generates various types of diagrams from Verilog code.

   

10. holoso

    9 1 32 8.2 Python

    Simple high-level synthesis of portable Verilog directly from idiomatic imperative Python for numerical/DSP-heavy applications. Not an HDL.

    

    Project mention: Show HN: FPGA design acceleration – idiomatic Python to synthesizable Verilog | news.ycombinator.com | 2026-06-27

11. FPGA_HW_SIM_FWK_2

    10 1 24 2.3 Python

    FPGA Hardware Simulation Framework

    

12. m6502

    11 2 4 3.8 Python

    6502 CPU implementation written in nMigen

    

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• What is the field of AI acceleration like?

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• A note from our sponsor - SaaSHub
  www.saashub.com | 14 Aug 2026

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