Qucs-S provides a fancy graphical user interface for a number of popular circuit simulation engines. The package contains libraries for schematic capture, visualization and components. The following simulation kernels are supported:

• Ngspice (recommended)

• Xyce

• SpiceOpus

• Qucsator (non-SPICE)

This package is a waveform viewer for FST files.

OSVVM is a verification methodology that defines a VHDL verification framework, verification utility library, verification component library, scripting API, and co-simulation capability for FPGA or ASIC verification.

OpenSTA is a gate level static timing verifier. As a stand-alone executable it can be used to verify the timing of a design using standard file formats.

This is a pythonized, kind of reverse engineered version of original AACircuit written by Andreas Weber in Borland Delphi. The idea and GUI layout are also taken from the original.

Libserialport is a minimal shared library written in C that is intended to take care of the OS-specific details when writing software that uses serial ports.

PySpice implements a Ngspice binding and provides an oriented object API on top of SPICE, the simulation output is converted to Numpy arrays for convenience.

The Dirtywave M8 Tracker is a portable sequencer and synthesizer, featuring 8 tracks of assignable instruments such as FM, waveform synthesis, virtual analog, sample playback, and MIDI output. It is powered by a Teensy micro-controller and inspired by the Gameboy tracker Little Sound DJ. m8c is a client for M8 Headless which allows one to install the M8 firmware on any Teensy.

fftgen produces FFT hardware designs in Verilog.

KLayout is EDA software. It is a scriptable VLSI layout editor used for visualizing and editing mask data, transcoding between different file formats (GDSII and OASIS), executing DRC, LVS verification, and drawing of chip cross-sections basked on mask data.

Project Trellis is a Nextpnr backend compatible with ECP5 FPGAs. The following features are currently available:

• logic slice functionality, including carries

• distributed RAM inside logic slices

• all internal interconnect

• basic IO, including tristate

• block RAM, using inference or manual instantiation

• multipliers using manual instantiation

• global networks and PLLs

• transcievers (DCUs.)

Fx2lafw is free firmware for Cypress FX2 chips which makes them usable as simple logic analyzer and/or oscilloscope hardware.

Gerbv is a viewer for files in the Gerber format (RS-274X only), which is commonly used to represent printed circuit board (PCB) layouts. Gerbv lets you load several files on top of each other, do measurements on the displayed image, etc. Besides viewing Gerbers, you may also view Excellon drill files as well as pick-place files.

Ngspice is a mixed-level/mixed-signal circuit simulator. It includes Spice3f5, a circuit simulator, and Xspice, an extension that provides code modeling support and simulation of digital components through an embedded event driven algorithm.

Magic is an interactive EDA layout tool. It can run DRC and LVS tests and can assist with automatic routing.

VSG lets you define a VHDL coding style and provides a command-line tool to enforce it.

Sigrok-cli is a command-line frontend for sigrok.

Nextpnr is a portable FPGA place and route tool.

sby-gui is a GUI for front-end driver program for codeyosys-based formal hardware verification flows.

Migen FHDL is a Python library that replaces the event-driven paradigm of Verilog and VHDL with the notions of combinatorial and synchronous statements, has arithmetic rules that make integers always behave like mathematical integers, and allows the design's logic to be constructed by a Python program.

Comedilib is a user-space library that provides a developer-friendly interface to Comedi devices. Comedi is a collection of drivers for a variety of common data acquisition plug-in boards. The drivers are implemented as a core Linux kernel module providing common functionality and individual low-level driver modules.

Xoscope is a digital oscilloscope that can acquire signals from ALSA, ESD, and COMEDI sources. This package currently does not include support for ESD or COMEDI sources.

Pcb-rnd is a Printed Circuit Board layout editor, part of the RiNgDove EDA suite.

VUnit features the functionality needed to realize continuous and automated testing of HDL code.