The Revision Control System (RCS) manages multiple revisions of files. RCS automates the storing, retrieval, logging, identification, and merging of revisions. RCS is useful for text that is revised frequently, for example programs, documentation, graphics, papers, and form letters.

Kakoune is a code editor heavily inspired by Vim; as such most of its commands are similar to vi’s ones, and it shares Vi’s "keystrokes as a text editing language" model. Kakoune can operate in two modes, normal and insertion. In insertion mode, keys are directly inserted into the current buffer. In normal mode, keys are used to manipulate the current selection and to enter insertion mode. Kakoune has a strong focus on interactivity, most commands provide immediate and incremental results, while still being competitive (as in keystroke count) with Vim. Kakoune works on selections, which are oriented, inclusive range of characters; selections have an anchor and a cursor character. Most commands move both of them, except when extending selection where the anchor character stays fixed and the cursor one moves around.

SEC is a simple event correlation tool that takes input and executes actions based on rules. It is very flexible and can be used with anything that can write out to a file stream.

Symlinks scans directories for symbolic links and lists them on stdout. Each link is prefixed with a classification of relative, absolute, dangling, messy, lengthy or other_fs.

SubNetCalc is an IPv4/IPv6 subnet address calculator. For given IPv4 or IPv6 address and netmask or prefix length, it calculates network address, broadcast address, maximum number of hosts and host address range. The output is colourized for better readability (e.g. network part, host part). Also, it prints the addresses in binary format for better understandability. Furthermore, it can identify the address type (e.g. multicast, unique local, site local, etc.) and extract additional information from the address (e.g. type, scope, interface ID, etc.). Finally, it can generate IPv6 unique local prefixes.