High-performance hybrid search engine for PHP.

Porter stemming library (C++)

build a positional inverted index from text files in a given folder and supports phrase search queries. the index maps terms to document positions for efficient searching and retrieval

PISA: Performant Indexes and Search for Academia

A blazing-fast C++ search engine with custom indexing and wxWidgets GUI.

⚡ Faster similarity search with PDX: A vertical data layout for vectors

BitMagic Library

A fast header-only graph-based index for approximate nearest neighbor search (ANNS). https://flatnav.net

Sequence Indexing and Search

Basic text search engine based on the classical Vector Space Model.

A simple text retrieval manifested by posting list, supporting boolean retrieval on zone index, ranked retrieval.

A multithreaded file retrieval engine with a client-server architecture for efficient indexing and searching of text files. V3 uses multiple clients for scalable indexing, supports AND-based term queries, tracks performance and handles large datasets more effectively.

File retrieval engine in C++ for indexing and searching text files designed specifically for large-scale research and scientific data retrieval supporting multi-term queries.

Mirror of the Xapian repository. You're welcome to open pull requests on github (they'll just get merged indirectly).

A smart FAQ module that matches user queries with relevant answers.

Vowpal Wabbit is a machine learning system which pushes the frontier of machine learning with techniques such as online, hashing, allreduce, reductions, learning2search, active, and interactive learning.

rank_bm25 for C++