GNOME Schedule is a system schedule maintenance tool. It has support for the cron and at scheduling systems. It aims to be as HIG compatible as possible. The target is to provide any sane desktop user with a tool to maintain the scheduling of his or her desktop tasks, while not requiring an understanding of the cron or at subsystems.
SPF is a new strategy for preventing junk mail. The present SMTP standard for email allows anyone to forge anyone else's email address. SPF verifies that the Sender address of an email message matches (according to some policy) the client IP address that submitted it. libspf2 is a complete and robust implementation of SPF which provides support for many MTAs. Support for new MTAs is in progress.
X-Plane is a flight simulator that reads in the geometric shape of any aircraft and then figures out how that aircraft will fly. It does this via an engineering process called "blade element theory", which involves breaking the aircraft down into many small elements and then finding the forces on each little element many times per second. These forces are then converted into accelerations, which are then integrated to velocities and positions. This gives X-Plane the most realistic flight model available for personal computers.
Jackbeat is a multi-platform audio sequencer for musicians and sound artists. Featuring a drum machine interface with animations for easy and playful editing, it is built for both composition and live setups with high interactivity needs. It is extremely easy to use yet powerful via connecting with other applications and plugins using JACK and OSC. Jackbeat loads and saves .jab files, Jackbeat's xml+tar open file format, and supports CoreAudio, ASIO, ALSA, PulseAudio, and JACK.
OpenAIS is an open source implementation of the SA Forum (www.saforum.org) Application Interface Specification. The project currently implements APIs to improve availability by reducing MTTR. APIs available are cluster membership, application failover, checkpointing, eventing, distributed locking, messaging, closed process groups, and extended virtual synchrony passthrough. It is possible to write redundant applications that tolerate hardware, operating system, and application faults. Cluster software developers can write plugins to use the infrastructure provided by OpenAIS.