From QuakeWorld Wiki
GibStats is a Quake 3 Arena, Quake I and Quake II Log Analyzer.
But GibStats goes way beyond the usual display of who killed who how many times.
You can display matches as graphs, player/player matrix (doom style), ranking, direct player vs player compare, single player analysis, highscore summary, clan tables and CTF team score tables.
All these displays can be sorted (ascending and descending) by kills, deaths, frags, suicides, skill, efficiency, relative frags, maps played and all CTF scores. The data to be displayed can be limited to a map, a set of maps (game), all maps, the last x, kills, the last x maps or one specific map name.