A curated list of awesome open source hardware tools.

• Categorized
• Alphabetical (per category)
• Requirements
  • link should be to source code repository
  • open source projects only
  • working projects only (not WIP/rusty)
• One tag line sentence per project.

• act
  • Asynchronous circuit compiler tools
• amaranth
  • Python based hardware design framework
• bsc
  • Compiler, simulator, and tools for the Bluespec Hardware Description Language
• bfg
  • Open-Source Silicon Compiler for Reduced-Complexity Reconfigurable Fabrics
• bsg_fakeram
  • Fake RAM generator
• calyx
  • Intermediate language and infrastructure for building compilers that generate custom hardware accelerators
• cfu-playground
  • Famework for playing with custom opcodes to accelerate TensorFlow Lite for Microcontrollers
• chisel
  • Scala based hardware description language
• circt
  • Circuit IR Compilers and Tools
• circuitgraph
  • Tools for working with circuits as graphs in python
• clash
  • Haskell to VHDL/Verilog/SystemVerilog compiler
• coreir
  • LLVM-style hardware compiler with first class support for generators
• dfiant
  • Dataflow Hardware Description Language
• firrtl
  • Intermediate Representation for RTL
• gamma
  • Optimizes mapping of DNN models on DNN Accelerators
• halide
  • Language for fast, portable data-parallel computation
• halide-to-hardware
  • Hardware generator combining halide and coreir
• hdlconvertor
  • Verilog/VHDL parser preprocessor and code generator for C++/Python based on ANTL4
• hs-to-coq
  • Convert Haskell source code to Coq source code
• livehd
  • Infrastructure for live interactive synthesis and simulation
• llhd
  • Intermediate representation for digital circuit descriptions
• kami
  • Platform for High-Level Parametric Hardware Specification and its Modular Verification
• magma
  • Python based hardware design language
• matchlib
  • SystemC/C++ library of commonly-used hardware functions and components that can be synthesized by most commercially-available HLS tools into RTL
• matchclib_connections
  • SystemC library implementing latency-insensitive channels for use by High-Level synthesis tools.
• myhdl
  • Python based hardware description and verification language
• naja
  • Structural Netlist API (and more) for EDA post synthesis flow development
• NNgen
  • A Fully-Customizable Hardware Synthesis Compiler for Deep Neural Network
• panda
  • High level synthesis (HLS) C/C++ framework
• pipelinec
  • C-like hardware description language (HDL) with automatic pipelining
• pygears
  • Python based hardware design framework
• pymtl3
  • Python hardware generation, simulation, and verification framework
• pyrtl
  • Python integrated design and simulation framework
• pysysc
  • Python package to make SystemC usable from Python
• pyverilog
  • Python design toolkit for Verilog HDL
• rohd
  • Dart based framework for describing and verifying hardware
• silice
  • Language that simplifies prototyping and writing algorithms on FPGA architectures
• skidl
  • SKiDL is a module that extends Python with the ability to design electronic circuits
• slang
  • Library that provides various components for lexing, parsing, type checking, and elaborating SystemVerilog code
• sodaopt
  • Leverages mlir to extract, optimize, and translate high-level code snippets into LLVM IR for use by high-level synthesis tools
• spinalhdl
  • Scala based HDL
• spydrnet
  • Framework for analyzing and transforming Verilog netlists
• surelog
  • SystemVerilog IEEE 2017 Pre-processor, Parser, Elaborator, UHDM Compiler
• sv-parser
  • SystemVerilog IEEE 1800-2017 parser library
• sv2v
  • SystemVerilog to Verilog conversion
• systemc
  • SystemC system design and verification language that spans hardware and software
• systemc-compiler
  • Translates synthesizable SystemC to synthesizable Verilog
• uhdm
  • Universal object model for IEEE SystemVerilog designs
• verible
  • Suite of SystemVerilog developer tools, including a parser, style-linter, and formatter
• veriloggen
  • Mixed-Paradigm Hardware Construction Framework
• verik
  • Kotlin based hardware description language
• Vlsir
  • Interchange formats for chip design
• xls
  • Google framework for hardware synthesis

• bazelhdl
  • Bazel based hdl build system
• bender
  • Dependency management tool for hardware projects.
• chipyard
  • Agile RISC-V SoC Design Framework.
• cocoon
  • An infrastructure for integrated EDA
• edalize
  • An abstraction library for interfacing EDA tools.
• f4pga
  • Architecture definitions of FPGA hardware
• fusesoc
  • Package manager and build abstraction tool for FPGA/ASIC development.
• hammer
  • Agile physical design component part of UC Berkeley Chipyard framework.
• hwtBuildsystem
  • Library of utils for interaction with the vendor tools.
• legoHDL
  • Command line HDL package manager and development tool.
• mflowgen
  • Modular flow specification and build-system generator for ASIC and FPGA design-space exploration.
• siliconcompiler
  • Build system that automates translation from source code to silicon.

• pyaedt
  • AEDT Python Client Package
• pydpf-core
  • Data Processing Framework - Python Core
• pyfluent
  • Pythonic interface to Ansys Fluent
• pymapdl
  • Pythonic interface to MAPDL

• bag
  • Berkeley analog layout generator
• esp
  • Design platform for heterogeneous SoC architecture and IP
• fabulous
  • FPGA fabric generator
• fftgenerator
  • Chisel based FFT generator
• fsm2sv
  • SystemVerilog FSM generator
• garnet
  • CGRA generator
• gemmini
  • Spatial array machine learning accelerator generator
• gen_registers
  • Python based tool for generating hardware registers and their associated files
• kaktus2dev
  • Graphical EDA tool based on the IP-XACT standard
• lake
  • Synthesizable memory generator
• litex
  • Framework for FPGA and soc development
• opencgra
  • Parametrizable Coarse-Grained Reconfigurable Array (CGRA) Generator
• openfasoc
  • Fully-Autonomous SoC Synthesis using Customizable Cell-Based Synthesizable Analog Circuits
• openfpga
  • FPGA IP Generator
• openram
  • Static random access memory (SRAM) compiler.
• prga
  • Python based FPGA fabric generator
• pymtl3-net
  • Cornell parameterizable OCN (on-chip network) generator
• revenoc
  • Configurable HDL NoC (Network-On-Chip) generator
• rggen
  • Configuration and status register generator
• rocket
  • Rocket chip chisel based generator
• spiral
  • Spiral based FFT generator
• systemrdl
  • Generic compiler front-end for Accellera's SystemRDL 2.0 register description language
• tce
  • Application-specific instruction-set processor (ASIP) toolset for design and programming of customized co-processors

• Vlsir
  • Interchange formats for chip design

• OpenVAF
  • Next generation Verilog-A compiler
• OpenPLC_Editor
  • IDE capable of creating programs for the OpenPLC Runtime
• OpenPLC_v3
  • OpenPLC Runtime version 3
• oregano
  • Schematic capture and circuit simulator
• xschem
  • Schematic editor for VLSI/Asic/Analog custom designs, netlist backends for VHDL, Spice and Verilog

• boardview
  • Reads KiCAD PCB layout files and writes ASCII Boardview files
• cuflow
  • Experimental procedural PCB layout program
• datasheet-scrubber
  • Utility that scrubs through large sets of PDF datasheets/documents in order to extract key circuit information
• kicad
  • Board design framework
• pcbflow
  • Python based Printed Circuit Board (PCB) layout and design package based on CuFlow

• abc
  • System for Sequential Logic Synthesis and Formal Verification
• lsoracle
  • Famework built on EPFL logic synthesis libraries.
• lstools
  • Showcase examples for EPFL logic synthesis libraries
• mockturtle
  • C++ logic network library
• yosys
  • Yosys Open SYnthesis Suite

• align
  • Automatic layout generator for analog circuits
• chip_art
  • Convert an image to a GDS format for inclusion in a zerotoasic project
• coriolis
  • RTL2GDS toolchain for mature nodes
• dreamplace
  • Deep learning toolkit-enabled VLSI placement
• gds3d
  • Reads GDSII layout and renders in 3D.
• gdsfactory
  • Python package to generate GDS layouts.
• gdstk
  • Gdstk (GDSII Tool Kit) is a C++/Python library for creation and manipulation of GDSII and OASIS files.
• gdspy
  • Python module for creating GDSII stream files, usually CAD layouts.
• klayout
  • Layout viewer
• Layout21
  • Integrated Circuit Layout
• lclayout
  • Layout generator for CMOS standard-cells
• magic
  • VLSI Layout Tool
• magical
  • Machine Generated Analog IC Layout
• netgen
  • LVS tool for comparing SPICE or verilog netlists
• openlane
  • Automated ASIC flow scripts based on openroad, yosys, magic, netgen.
• openroad
  • Complete RTL2GDS platform
• phidl
  • Python GDS layout and CAD geometry creation

• byteman
  • Bitstream relocation and manipulation tool
• icestudio
  • Visual editor for open FPGA boards
• flowtune
  • FPGA synehsis and PNR optimizer
• foedag
  • Framework Open EDA Gui
• nextpnr
  • FPGA place and route tool
• openfpgaloader
  • Universal utility for programming FPGA
• rphax
  • Automation flow to develop and prototype hardware accelerators on Xilinx FPGAs
• vtr
  • FPGA place and route tool

• boolector
  • SMT solver for the theories of fixed-size bit-vectors, arrays and uninterpreted functions.
• cvc5
  • SMT automatic theorem prover
• ilang
  • Princeton modeling and Verification Platform for SoCs using ILAs
• pono
  • Extensible SMT-based model checker implemented in C++.
• sby
  • Front-end for Yosys-based formal verification flows.
• z3
  • Microsoft research theorem prover.

• adc-eval
  • Python tools for ADC performance analysis
• anasysmod
  • Framework for FPGA emulation of mixed-signal systems
• awsteria_infra
  • Middleware for AWS hosted FPGA applications
• bigspicy
  • Tool for merging circuit descriptions
• champsim
  • Trace-based simulator for a microarchitecture study.
• cocotb
  • Coroutine based cosimulation library for writing VHDL and Verilog testbenches in Python
• cvc
  • CVC: Circuit Validity Checker. Check for errors in CDL netlist
• devsim
  • TCAD Semiconductor Device Simulator
• dromajo
  • RISC-V RV64GC functional emulator
• eesim
  • Browser-based SPICE circuit simulator
• essent
  • High-perofrmance FIRRTL (Chisel) simulator
• Fault
  • Design-for-testing (DFT) Solution
• frame
  • Fast Roofline Analytical Modeling and Estimation
• firesim
  • FPGA-accelerated Cycle-accurate Hardware Simulation in the Cloud
• fstdumper
  • Verilog VPI module to dump FST (Fast Signal Trace) databases
• gem5
  • Modular simulator platform for computer-system architecture research
• ghdl
  • VHDL 2008/93/87 simulator
• icarus
  • Verilog IEEE-1364 simulator
• lctime
  • Library cell characterization
• hotspot
  • Thermal modeleing tool for use in architectural studies
• libsystemctlm-soc
  • SystemC/TLM-2.0 Co-simulation framework
• maestro
  • Analytical cost model evaluating DNN mappings (dataflows and tiling)
• msdsl
  • Automatic generation of real number models from analog circuits
• netlist-paths
  • A library and command-line tool for querying a Verilog netlist
• ngspice
  • Spice simulator
• opensta
  • Signoff quality STA engine used by OpenRoad
• opentimer
  • High perormance static timing analysis
• osvvm
  • A VHDL verification framework, utility library, verification component library, and a simulator independent scripting flow
• qemu
  • Generic and open source machine & userspace emulator and virtualizer
• qucs_s
  • Integrated circuit simulator with Graphical User Interface
• pact
  • Thermal Simulator
• pyspice
  • Python interface for ngspice and xyce
• pyuvm
  • SystemVerilog UVM written in Python
• renode
  • Generic and open source machine emulator (including multi-part and peripheral) designed to run unmodified firmware which includes co-simulation with RTL simulators.
• SimulIDE
  • SimulIDE is a simple real-time electronic circuit simulator
• svlint
  • SystemVerilog linter
• svlint-action
  • GitHub action for svlint
• svreal
  • Synthesizable real number library in SystemVerilog, supporting both fixed- and floating-point formats
• systemctlm-cosim-demo
  • Demo system for libsystemctlm-soc library
• uvvm
  • A free and Open Source Methodology and Library for making very structured VHDL-based testbenches.
• verilator
  • SystemVerilog simulator and lint system.
• v2k-top
  • Parser/simulation framework for Verilog & C++
• vidbo
  • Virtual development board
• vunit
  • Unit testing framework for VHDL/SystemVerilog
• xyce
  • Parallel spice simulator from Sandia national labs

• gtkwave
  • GTK+ based VCD waveform viewer
• konata
  • Instruction pipeline visualizer for Gem5
• sigrok
  • Portable, cross-platform, sinal analysis software suite (logic analyzers, scopes, multimeters, and more)
• simview
  • Text-based SystemVerilog design browser and waveform viewer
• sootty
  • Command-line tool for displaying vcd waveforms

• bsg_pipeclean_suite
  • Collection of designs used to stress test new CAD flows
• corescore
  • Benchmark for FPGAs and their synthesis/P&R tools
• epfl-benchmarks
  • Combinational Benchmark Suite for logic synthesis
• opdb
  • Princeton design benchmark generators
• rdf-2020
  • IEEE CEDA eda benchmark flow
• sv-tests
  • SystemVerilog compliance test suite

• freecad
  • 3D parametric CAD for building models of components for KiCad 3D preview (also enclosures)
• graphviz
  • Python library for graph cration and rendering in DOT language
• netlistsvg
  • draws an SVG schematic from a JSON netlist
• pcbdraw
  • Convert KiCAD board into 2D drawing suitable for pinout diagrams
• pinion
  • Generate interactive Diagrams for your PCBs
• pinout
  • Python package that generates hardware pinout diagrams as SVG images
• sphinx
  • Document builder
• sphinx-verilog-domain
  • Sphinx domain to allow integration of Verilog / SystemVerilog documentation into Sphinx.
• sphinxcontrib-hdl-diagrams
  • Sphinx plugin to automatically generate diagrams from RTL.
• symbolator
  • HDL symbol generator
• undulate
  • Python compatible wavedrom module with extensions and console rendering support
• wavedrom
  • Digital timing diagram rendering engine
• wavedrompy
  • Python comptabled Wavedrom module

• ben-marshall
  • Hardware verification
• clin99
  • EDA projects
• computer-engineering-resources
  • A curated list of Computer Engineering/Architecture resources
• delftopenhardware
  • Open hardware materials
• drom
  • HDL languages
• hdl
  • Hardware description resources
• mattvenn
  • ASIC resources
• pkuzjx
  • Open source EDA resources
• semiconduoctor-startups
  • Semiconductor startups