Suricata is an Intrusion Detection and Prevention (IDS/IPS) engine developed by the Open Information Security Foundation and its supporting vendors. The engine is multi-threaded and has native IPv6 support, file extraction capabilities, and many more features. It's capable of loading existing Snort rules and signatures, and supports many frontends through Barnyard2.
Dar is a shell command that makes backup of a directory tree and files. Its features include splitting archives over several files, DVD, CD, ZIP, or floppies, compression, full or differential backups, strong encryption, proper saving and restoration of hard links, extended attributes, file forks, Door inodes, and sparse files, remote backup using pipes and external commands (such as ssh), and rearrangement of the "slices" of an existing archive. It can run commands between slices, before and after saving some defined files or directories (for a proper database backup, for example), and quickly retrieve individual files from differential and full backups. Several external GUIs exist as alternatives to its CLI interface, like kdar, DarGUI, SaraB, etc.
The GNU Gatekeeper is a free H.323 gatekeeper based on the OpenH323 project. You can use it to manage a Voice-over-IP network and let endpoints (e.g., Netmeeting) communicate through symbolic names. It also has an external interface for billing and other applications. It runs on a number of Unix versions (including Linux and Solaris) and Windows.
Dream Diary is an encrypted diary application. It allows styled text with embedded images which the application can download from the Web. It indexes words to make it easy to search on words or phrases. It uses strong encryption (Blowfish) on all diary entries. Although it was originally designed for recording dreams, it can be used for any kind of diary or notebook.
OCS Inventory is an application designed to help a network or system administrator keep track of the configuration and software of computers that are installed on the network. Information about hardware and operating system are collected. OCS Inventory is also able to detect all active devices on your network, such as switches, routers, network printers, and unattended devices. It also allows you to deploy software, commands, or files on client computers.