Checkaliases reads a sendmail alias file, then fully expands all files, included files, program calls, etc., and validates that they are all deliverable addresses. The included newaliases.el makes editing and checking an aliases file with GNU Emacs easier.
Fastresolve is a package of programs to process
web log files, to get DNS and domain ownership
information for log analysis. It sends out many
queries in parallel, and caches results for speed. Its
DNS resolver is 3-50 times as fast as other log file
I think I looked at every mp3 ripper front end for Linux, and this one seems to be the best. Being able to rip and encode simultaneously is a big win, especially on a multiprocessor system like I have.