There are 2 repositories under warcraftlogs topic.
WoWAnalyzer is a tool to help you analyze and improve your World of Warcraft raiding performance through various relevant metrics and gameplay suggestions.
WeakAuras but for WarcraftLogs
Some Enhancement Scripts of Warcraft Logs
Python wcl spider
A Python Flask web application that retrieves dungeon information about a character using the Warcraftlogs API and determines their highest achieved 'Key %' parses per dungeon during the current Mythic Plus season.
Fetch basic pull data (first seen, first success, total count, success count) from warcraftlogs
Builds World of Warcraft raid attendance reports from public Warcraft Logs data
Tool for finding logs using certain talents and/or items