ACL2 is a mathematical logic, programming language, and mechanical theorem prover based on the applicative subset of Common Lisp. It is an "industrial-strength" version of the NQTHM or Boyer/Moore theorem prover, and has been used for the formal verification of commercial microprocessors, the Java Virtual Machine, interesting algorithms, and so forth.
Alleyoop is a GNOME frontend to the Valgrind memory checker. Its features include a right-click context menu to intelligently suppress errors or launch an editor on the source file, jumping to the exact line of the error condition. A searchbar at the top of the viewer can be used to limit the viewable errors to those that match the regex criteria entered. A fully functional Suppressions editor is also included.
BFBTester is good for doing quick, proactive security checks of binary programs. BFBTester will perform checks of single and multiple argument command line overflows and environment variable overflows. It can also watch for tempfile creation activity to alert the user of any programs using unsafe tempfile names.
Bunny the Fuzzer is a closed loop, high-performance, general purpose protocol-blind fuzzer for C programs. It uses compiler-level integration to seamlessly inject precise and reliable instrumentation hooks into the traced program. These hooks enable the fuzzer to receive real-time feedback on changes to the function call path, call parameters, and return values in response to variations in input data.
Burp intruder is a tool that facilitates automated attacks against Web-enabled applications. It is highly configurable and can test for common Web application vulnerabilities such as SQL injection, cross-site scripting, buffer overflows, and directory traversal as well as performing brute force attacks against authentication schemes, enumeration, parameter manipulation, trawling for hidden content and functionality, session token sequencing and session hijacking, data mining, concurrency attacks, and application-layer denial-of-service attacks.
CBT Combo is a Computer-Based Training program for K-12 teachers who use Linux. It is text based and supports full internationalization and localization. It is a combination of authoring and playback software, and allows everyone to create training courses for others on most subjects. It supports access through serial TTYs, telnet, console, and xterms. X11 is not required but is supported through xterm. It runs extremely well on older 386 and 486 systems as well as more modern systems.