GHDL - a VHDL simulator
GHDL is the leading open source VHDL simulator. *** Now on github.com/tgingold/ghdl *** We have binary distributions for Debian Linux, Mac OSX and Windows. On other systems, getting GHDL from here means downloading the current source package and building GHDL from source. Alternatively you can get the latest source version (warning : occasionally unstable!) by pulling a snapshot from the git repository.
Icarus Verilog Interactive on MacOSX
A collection of useful software packages to perform engineering tasks, especially electrical engineering and chip design. All packages come as shrink-wrapped installers for Apple's Mac OS X.
Parallel Port Eprom Programmer contains a GNU/Linux driver that controls the eprom programmer throught the parallel port and a tool which allows reading and writing eproms.
Eclipse-based plugin for HRT-HOOD and HRT-UML design for Hard Real Time Systems
A code template tool for VHDL development which outputs to the clipboard - this means it can be used with any tool. Written in Ada, using GTK. Runs on Windows XP and Linux with common source code