The Version numbers read/write command line tool finds and updates version number tokens in source code or packaging files. It takes filename context and syntax into account for reading and writing to files. It provides an easy and readable argument format, and can increase patch versions or bump build numbers. It's a minor simplification for manual package building.
Shasplit takes a large data block, splits it into smaller parts, and puts those parts into an SHA-based content-addressed store. Reassembling those parts is a trivial "cat" invocation. Repeating parts (e.g., from previous split operations) are stored only once, which allows efficient incremental backups of whole LVM snapshots via Rsync. Shasplit shows its strengths on encrypted block devices, but might be useful for non-encrypted data, too.
springclean is a command line tool for cleaning up log files. It can select files based on name (exact or regex), age, or a combination of both. You can preview changes, and confirm before running each action. For each action you can find how much disk space has been freed, compress, move to another directory or remove your files, and create an audit trail with syslog.
Sanzang is a compact and simple cross-platform machine translation system. It is especially useful for translating from the CJK languages (Chinese, Japanese, and Korean), and it is very suitable for working with ancient and otherwise difficult texts. Unlike most other machine translation systems, Sanzang is small and approachable. Any user can develop his or her own translation rules, and these rules are simply stored in a text file and applied at runtime.
Quasi extracts code fragments from text documentation and appends them to new source code files. Unlike other literate programming tools, it does not perform any sort of macro expansion. The strength of Quasi is its simplicity - it forces the programmer to think in turns of properly designed methods.