Frescobaldi is a LilyPond sheet music editor with built-in MIDI player and PDF preview. It aims to be powerful, yet lightweight and easy to use.
Gnome Subtitles is a subtitle editor for the GNOME desktop. It supports the most common text-based subtitle formats, video previewing, timings synchronization and subtitle translation.
Text note windows for X desktops.
A .NET component to read, write, and modify a PowerPoint document.