DIFFUSE enables FreeBSD's IPFW firewall subsystem to classify IP traffic based on statistical traffic properties. With DIFFUSE, IPFW computes statistics (such as packet lengths or inter-packet time intervals) for observed flows, and uses ML (machine learning) techniques to assign flows into classes. In addition to traditional packet inspection rules, IPFW rules may now also be expressed in terms of traffic statistics or classes identified by ML classification. This can be helpful when direct packet inspection is problematic (perhaps for administrative reasons, or because port numbers do not reliably identify classes of applications). DIFFUSE also enables one instance of IPFW to send flow information and classes to other IPFW instances, which then can act on such traffic (e.g. to prioritize, accept, or deny) according to its class. This allows for distributed architectures, where classification at one location in your network is used to control firewalling or rate-shaping actions at other locations.
dosbox-ipxrelay is a very simple, super-low-overhead dedicated server to support the DOSBOX version of IPX-over-UDP for old games. In particular, when left completely idle, it should consume no CPU time whatsoever. It should also have substantially better latency than the DOSBOX built-in server. It was designed and tested on Linux, and it should compile on any modern POSIX-compliant system.
PhotoCatalog can import GPS data from various formats such as CSV, GPX, and InstaMapper (in the case of InstaMapper, it is a live stream) and create a Map that is updated live during your travels. It can also import data from Twitter or FourSquare, RSS extract any GPS data they have or supplement them with existing GPS data, and place them on a map as well as keeping a personal archive. It can then import photos via file upload, email, or scanning an existing folder, geotag photos lacking GPS data, sort, rotate, scale, and [losslessly] compress them as necessary and place them on a map. It can also push them to Facebook automatically and fill in a caption and/or comment with them.