Tipue

Tipue is a fantastic open source JavaScript site search engine that works seamlessly with any browser supporting JavaScript 1.3 and at least partially supports the W3C DOM Level 1. Additionally, this platform-independent software is small and lightweight, consuming less than 7Kb, and doesn't require any other technologies on your host. Although best suited for smaller sites with less than 100 pages, Tipue offers plenty of features to give your visitors a great search experience.

With Tipue Standard Edition, you get to create and update Tipue right from your site. This fantastic feature allows you to index your pages and then edit and update your data file whenever necessary. Finally, you can rest assured that you're getting excellent documentation since the scripts come equipped with full recommendations.

Best of all, Tipue Standard Edition is available for free and requires Windows 98SE or above. There's no need to worry about the software eating up your budget or compatibility issues while running. Plus, the Tipue scripts are subject to the GPL licence, ensuring that the software is open and accessible to all.