Projects

Apache Lucene

claimed by Apache Software Foundation

Apache Lucene is an information retrieval API originally implemented in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform. Lucene has been ported to other programming languages including Perl, C#, C++, Python, Ruby and PHP.

Lucene.Net

claimed by Apache Software Foundation

Lucene.Net is a source code, class-per-class, API-per-API and algorithmatic port of the Java Lucene search engine to the C# and .NET platform utilizing Microsoft .NET Framework.

Beagle

Beagle is a desktop-independent service for indexing and searching your data. The Beagle daemon transparently monitors your data and updates the index to reflect any changes. On an inotify-enabled system, these updates (e.g. new files, emails, chat) happen more-or-less in real time. Beagle ... [More] supports many different file formats and can index files/email/browsing history/chat logs/RSS feeds etc. [Less]

Tracker

Tracker is a first class object database, extensible tag/metadata database, search tool and indexer. It can trawl through your hard drive and index existing files and data stores It has been designed from the ground up to be very lightweight (the tracker daemon consumes ~4MB of RAM in typical ... [More] use) yet at the same time very fast too. It provides a comprehensive, persistent and extensible storage system that can store and index almost any object. These objects can also have extensible user defined metadata and tags to create rich first class objects. [Less]

Sphinx Search

Sphinx is a full-text search engine, it's a standalone search engine, meant to provide fast, size-efficient and relevant full-text search functions to other applications. Sphinx was specially designed to integrate well with SQL databases and scripting languages.

Xapian

Xapian is an Open Source Search Engine Library, released under the GPL. It's written in C++, with bindings to allow use from Perl, Python, PHP, Java, Tcl, C#, and Ruby (so far!) Xapian is a highly adaptable toolkit which allows developers to easily add advanced indexing and search facilities ... [More] to their own applications. It supports the Probabilistic Information Retrieval model and also supports a rich set of boolean query operators. [Less]

Hibernate Search

Hibernate Search brings the power of full text search engines to the persistence domain model and Hibernate experience, through transparent configuration via annotations and a common API. Full text search engines like Apache Lucene(tm) allow applications to execute free-text search queries. ... [More] However, it becomes increasingly more difficult to index a more complex object domain model - keeping the index up to date, dealing with the mismatch between the index structure and the domain model, querying mismatches, and so on. Hibernate Search help to tackle these problems and provides additional features such an easy to use Query DSL, JPA integration, advanced filtering, scalable clustering and monitoring features. [Less]

elasticsearch

Open source, distributed, RESTful search engine built on top of Lucene.

Strigi

claimed by KDE

Strigi is an information extraction and indexing library, that comes wih a daemon which uses a very fast and efficient crawler that can index data on your harddrive. Indexing operations are performed without hammering your system, this makes Strigi the fastest and smallest desktop searching program.

Whoosh Python Search Library

Whoosh is a fast, featureful full-text indexing and searching library implemented in pure Python. Some of Whoosh's features include: * Pythonic API. * Pure-Python. No compilation or binary packages needed, no mysterious crashes. * Fielded indexing and search. * Fast indexing and ... [More] retrieval -- much faster than any other pure-Python solution. * Pluggable scoring algorithm (including BM25F), text analysis, storage, posting format, etc. * Powerful query language. * Pure Python spell-checker. [Less]