PostPic is an extension for the PostgreSQL DBMS that enables image processing inside the database, like PostGIS does for spatial data. It adds a new ‘image’ type to the SQL and several functions for processing images and extracting their attributes.
Papertrail is a ballot scanning and processing software suite which supports elections based on paper ballots which can be scanned and counted automatically.
A PHP class for generating PDF documents.
A peer-to-peer network-based digital currency.