Allin1 is a little dock applet for FluxBox and similar window managers. It monitors CPU load with a moving graph, memory and swap usage with histograms, battery and power status with histogram and icons, ethernet/PPP interfaces with icons and histograms (linear or logaritmic), filesystem space, and Seti@home progress.
E-Notes is an application delete, create, and configure your notes. The configuration can modify all properties of a note, like the border, title, text, colors (text and background), background image, font, padding, transparency, window attributes, shading, and defaults. An alarm can also be set for each note, and it works with the Enlightenment epplet and Window Maker dockapp.
GNUSTEP Live CD contains a lot of software for GNUstep, a free implementation of the OPENSTEP framework (which is also directly used in Mac OS X as Cocoa). It includes excellent applications for RAD (GORM and ProjectCenter). The CD is available for i486, AMD64, Apple Mac PowerPC, and Sun UltraSPARC computers.