A useful synthesizer

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. It can read MIDI events from MIDI input devices or files and render them to an audio device using SoundFont instrument banks. It can also play MIDI files. Other features include real time effect control and a powerful API for embedding FluidSynth in other programs.

in reference to:

"FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. It can read MIDI events from MIDI input devices or files and render them to an audio device using SoundFont instrument banks. It can also play MIDI files. Other features include real time effect control and a powerful API for embedding FluidSynth in other programs."
- FluidSynth | freshmeat.net (view on Google Sidewiki)

Versatille Backup tool for Ubuntu

Arkeia Network Backup Enterprise Edition for Ubuntu is a completely free version of the Arkeia Network Backup software specifically for Ubuntu servers. It allows an administrator to backup and restore files via a powerful easy to use Web UI. This edition has the option to backup to a 250 GB VTL or tape drive. All Arkeia products support any tape drive that is compatible with the Linux st driver. This edition allows you to backup Windows desktops, Mac desktops, Linux servers, FreeBSD servers, and more.

in reference to:

"Arkeia Network Backup Enterprise Edition for Ubuntu is a completely free version of the Arkeia Network Backup software specifically for Ubuntu servers. It allows an administrator to backup and restore files via a powerful easy to use Web UI. This edition has the option to backup to a 250 GB VTL or tape drive. All Arkeia products support any tape drive that is compatible with the Linux st driver. This edition allows you to backup Windows desktops, Mac desktops, Linux servers, FreeBSD servers, and more."
- Arkeia Network Backup Enterprise Edition for Ubuntu | freshmeat.net (view on Google Sidewiki)