a2web is a lightweight Web user interface for aria2. It provides a remote control for your downloads.
librangetree is a C++ template, implementing a 2D range tree for both counting and reporting queries. It is just about the fastest way to do 2D searches.
radeontop lets you view GPU utilization on open Radeon drivers. Both the total usage and per-block usage are shown. All cards starting with R600 are supported.
A simple-to-use time tracker.
A set of tools and libraries to access human-editable text-based databases called recfiles.