walloop engine

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.

Just try shopping on Search Engine Explorer and you won't want to back!.

APE is a free AS3 open source 2D physics engine for use in Flash and Flex.