Electronic design and programming tools suite like Eagle, MpLab
Powerfull pre-processor
A graphical Finite State Machine (FSM) designer.
dmodem
Library of Approximate Adders
vHDL Obfuscator is an small GUI to obfuscate and reformat HDL files
cMIPS - an FPGA ready VHDL model for 5-stage pipeline, MIPS32r2 core
Simple CPU for education
Hardware FLAC Encoder / Decoder
VHDL Design Tool - code generation and project management
Python Hardware Processor
C++ Verilog macro preprocessor