Splint is a tool for statically checking C programs for security vulnerabilities and coding mistakes.

Generates an index (or tag) file of C language objects found in C source and header files that allows these items to be quickly and easily located by a text editor or other utility. [Open Source, GPL]

OpenGrok is a fast and usable source code search and cross reference engine. It helps you search, cross-reference and navigate your source tree. It can understand various program file formats and version control histories like SCCS, RCS, CVS and Subve...

Tool for statically checking C programs. [Open source, GPL]

Acts as a caching pre-processor to C/C++ compilers, which often results in a 5 to 10 times speedup in common compilations. [Open Source, GPL]

A static analyzer analyzes reactive, critical, real-time programs written in the C programming language and looks for runtime errors.

Cscope is a developer's tool for browsing C programming code.

GNU GLOBAL is a source code tag system that works the same way across diverse environments. [Open source, GPL]

Source-highlight, given a source file, produces a document with syntax highlighting. [Open source, GPL]

Caches compiled object files to dramaticly speed up compiles. More convenient than make, and speeds up builds (like RPM builds) that make doesn't. Obsoleted by ccache.