Grr.app is a lightweight, easy-to-use RSS
reader application for GNUstep. It understands RSS
0.91, 1.0, 2.0, and ATOM 0.3, as well as different
extensions to these standards.
LaTeX Service returns a LaTeX rendering of selected text
as a TIFF image.
A simple WebDAV 1.0 server.
A Django appliance that is easy to use and lightweight.