LogicalDOC is a Web-based document management system that is easy to use and learn. Its architecture leverages best-of-breed Java technology to achieve a powerful and flexible solution. It supports its users with a powerful search engine (Lucene), Web service interface (JAX-WS via CXF) compatible with .NET and PHP, versioning, annotation on documents, a WebDAV interface, importing and exporting from .zip files. Documents can be organized into hierarchical folders, searched using the integrated search engine, or browsed by Tag. The system is extensible thanks to the technologies used (Spring-Hibernate) and its plugin architecture.
OpenSearchServer is a stable, high-performance search engine and a suite of high-powered full text search algorithms. Documents can be indexed in sixteen languages. Multi-lingual analyzers slice sentences into words, then run lemmatisation algorithms on words based on the document's language. Numerous document formats are supported, such as XML, HTML/XHTML, PDF, Word, PowerPoint, RTF, OpenOffice, plain text, MP3/4, Ogg, FLAC, etc. The Web interface, built around the Zkoss framework, provides an easy way to manage OSS. The integration is fast using the PHP client or the API (XML over HTTP). The crawlers of OpenSearchServer go through Web sites, file systems, and databases to rapidly and easily build your index.
Puggle is a desktop search engine that provides full text search over files, folders, music, photos, Web pages, and other data that are stored locally on your computer. Puggle is able to create many different indices, each with a different configuration. For example, you may have a different index for your music collection as well as your documents. Each of them can be used on demand, simply by loading it. Furthermore, Puggle supports indexing of portable devices, like USB flash drives or external hard disks. The index will be stored in the device, using relative paths, allowing you to search over the data very quickly on any computer.