The ASN.1 Development Tools(ADT) is a suit of Eclipse plugins which allow editing, syntax checking of ASN.1 files. Contribution to the asnCompiler extension point can automatically generate C/C++/Java/other language code from ASN.1 files.
This project provides binary packages for the Ada front end of GNU compiler collection. The project also provides various Ada libraries like the Ada Web Server and Ada aware Integrated Development Environments (gps and vim).
Visual Tcl is a freely-available, high-quality application development environment for UNIX, Windows, Macintosh and AS400 platforms. Visual Tcl is written entirely in Tcl/Tk and generates pure Tcl/Tk code.
Lightweight and easy to use cross-platform C++ IDE
ZinjaI is a lightweight Cross-platform IDE for programming with C/C++, initially aimed to be used in classroom for learning C++, but powerful enough to manage complex projects as ZinjaI itself.
Zycode is a small, lightweight IDE written in C/C++ using the wxWidgets toolkit.
A cross-platform wxWindows class for running Ghostscript and manipulating the image it produces, plus an IDE/debugger for developing programs written in PostScript. For a PostScript debugger, there is now also an Eclipse plug-in - see http://thomas-fritsch.github.io/psdt/