Sloc, Cloc and Code: scc is a very fast accurate code counter
VHDL 2008/93/87 simulator
Haskell to VHDL/Verilog/SystemVerilog compiler
A general purpose syntax highlighter in pure Go
wxMEdit, Cross-platform Text/Hex Editor, Improved Version of MadEdit
A New Programming Language for FPGA Projects
CoolFormat Source Code Formatter
A free cross-platform editor for the DRAKON visual language.
Electronic design and programming tools suite like Eagle, MpLab
Powerfull pre-processor
A graphical Finite State Machine (FSM) designer.
Library of Approximate Adders
vHDL Obfuscator is an small GUI to obfuscate and reformat HDL files
VHDL Design Tool - code generation and project management