For C (and CPP obviously):
Include a fast and tiny RAM-tracing feature for Real-Time (RT) debugging purposes.
>> ONLY FOR DEBUGGING <<
Very much faster than printf-debugging, which may result in unforseen results in an RT environement.
A tiny and easy to use log library for C/C++. Written in C.
Customizable log message format for global and specified output target
Cross platform support. Tested: linux, win32, wince, mac
A hardware supported hypervisor originally built for malware analysis. Features: Linux VM introspection, minimal detectability, small (~150KB), simple, and well documented. Can be used for other purposes. Support for Intel-VT & Windows coming soon.
KISS is a kernel-side host-oriented security tool, which may bring you file integrity checking, file and process hiding and actions handling on special internal events (using a tiny scripting language).
The 'latestlog' package keeps a tiny database of when you last looked at particular file (usually a logfile) using latestlog. If the file has changed (grown) since that last time, latestlog will only display the new contents. Other utils will be added.