cheat engine

A full text search engine for HTML, PDF, DOC, XLS, PPT and TXT CDs

It includes SAproxy graphical user interface and SpamAssassin engine.

Navigator Script is search engine CGI script.

TweenLite is an extremely fast, lightweight, and flexible tweening engine.

CORE Ecommerce is a proven engine for running eShops, creating marketplaces.

Namazu is a full-text search engine intended for easy use.

Search, Save and Organize web sites fast with the personal search engine toolbar

Elgg is an open source social engine

SQLite COM is a fully functional in-process SQL database engine.

Open source search engine for Internet and Intranet sites