cheat engine

Eedit and/or mod variables in your games.

Cheat Sheet is a small footprint program.

Covers 15 of the most common engine building and performance calculations.

Search Engine Optimization (SEO) toolbar for Firefox and IE browser

Fluid Dynamics Search Engine is an easy-to-install search engine for your site

Get top search engine rankings with this search engine optimization wizard

A free index-based network search engine that indexes shared files in your LAN.

An open source, high precision corporate search engine based on Apache Nutch.

YaCy is a scalable web search engine

This is a Ruby implementation of a basic interactive fiction (IF) engine.