A search engine is an information retrieval system designed to help find information stored on a computer system. This includes Web search engines.

• Fess – Fess is a very powerful and easily deployable Enterprise Search Server. Apache-2.0 Java/Docker
• Gigablast – Open-source search engine. Apache-2.0 C++
• Hound – Lightning fast code searching made easy. MIT Go/Docker
• Jina – Cloud-native neural search framework for any kind of data. Apache-2.0 Python
• librengine – Private web search engine. GPL-3.0 C++
• LibreX  – Framework and javascript free privacy respecting meta search engine. AGPL-3.0 PHP/Docker
• Manticore Search – Much faster alternative to Elasticsearch for full-text search and data analytics. Provides much lower response time for small, medium and big data. GPL-2.0 Docker/C++
• MeiliSearch – Ultra relevant, instant and typo-tolerant full-text search API. MIT Rust
• OpenSearch – Open source distributed and RESTful search engine. Apache-2.0 Java
• Searx  – Privacy-respecting, hackable metasearch engine. AGPL-3.0 Python
• sist2 – Lightning-fast file system indexer and search tool. GPL-3.0 C
• Typesense – Blazing fast, typo-tolerant open source search engine optimized for developer happiness and ease of use. GPL-3.0 C++
• Whoogle  – A self-hosted, ad-free, privacy-respecting metasearch engine. MIT Python
• Yacy – Peer based, decentralized search engine server. GPL-2.0 Java
• ZincSearch – A lightweight alternative to elasticsearch that requires minimal resources, written in Go. Apache-2.0 Go

Ashwani K

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