The Free / Libre / Open Source Web App with the most built-in features
Cerberus Content Management System
Our support forum has moved: community.bluespice.com
PDF Library for Developers
Open Source Enterprise Wiki and Web Application Platform
The continued maintenance of Michael Gundlach's CatBlock
Simple viewer app for most Booru Sites, coded in Qt C++
Auto Rescanning - Search Terms - Regularly Updated With New Features
Simple application for downloading pictures from Zerochan.net
Bulk Downloader for selectable Images (even Google Images)