OpenGrok - Fast and usable source code search and cross reference engine, written in Java

•    Java

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OpenGrok is a fast and usable source code search and cross reference engine, written in Java. It helps you search, cross-reference and navigate your source tree. It can understand various program file formats and version control histories of many source code management systems.

opengrok source-code search-engine code-search-engine

Sourcegraph - Code search and intelligence, self-hosted and scalable

•    Go

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Sourcegraph is a fast, open-source, fully-featured code search and navigation engine. It provides Fast global code search with a hybrid backend that combines a trigram index with in-memory streaming, Code intelligence for many languages via the Language Server Protocol.

code-search code-intelligence code-search-engine source-code

Sourcetrail - The interactive source code browser

•    C++

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Sourcetrail, the lightweight code visualizer specifically crafted for fast and comprehensive navigation within your source code. Sourcetrail utilizes software visualization to dynamically generate interactive code maps of any selected type, function, variable, etc. and shows all their dependencies to the rest of the codebase.

code-search code-browser visualization code-search-engine source-code-search source-code

OpenGrok - A wicked fast source browser

•    Java

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OpenGrok is a fast and usable source code search and cross reference engine. It helps you search, cross-reference and navigate your source tree. It can understand various program file formats and version control histories like Mercurial, Git, SCCS, RCS, CVS, Subversion, Teamware, ClearCase, Perforce, Monotone and Bazaar.

source code search engine code-search-engine

Tantivy - Full-text search engine library inspired by Lucene and written in Rust

•    Rust

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Tantivy is a full text search engine library written in rust. It is closer to Lucene than to Elastic Search and Solr in the sense it is not an off-the-shelf search engine server, but rather a crate that can be used to build such a search engine.

search-engine searchengine full-text-search lucene library

searchcode server - The offical home of searchcode-server where you can run searchcode locally

•    Java

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searchcode server is a powerful code search engine with a sleek web user interface. searchcode server works in tandem with your source control system, indexing thousands of repositories and files allowing you and your developers to quickly find and reuse code across teams.

searchcode-server search code-search search-engine code-search-engine

CodePilot.ai - The code search service to rule them all and in a dark theme, bind them

•    Javascript

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CodePilot.ai is the Search Tool for Software Developers. Search multiple sources like Github, Stackoverflow, Searchcode at once and find solutions to your coding problems.

code-search code-search-engine aggregation source-code

Zoekt - Fast trigram based code search

•    Go

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This is a fast text search engine, intended for use with source code. (Pronunciation: roughly as you would pronounce "zooked" in English)

code-search search-engine searchengine

quark - Stay happy while offline | World's first offline search engine.

•    C++

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This is the World's first Offline code Search Engine presented by OpenGenus Foundation. You can, now, search code for any algorithm or data-structure in your favorite language even when you are not connected to the internet. We are on a mission to bring the best parts of the Internet Offline, enable people to work offline for a longer period of time and revolutionize the way people interact with the web.

search-engine opengenus code-search offline

ugrep - Ultra fast grep with interactive query UI and fuzzy search

•    C++

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ugrep is ultra fast grep with interactive query UI and fuzzy search. It can search file systems, source code, text, binary files, archives (cpio/tar/pax/zip), compressed files (gz/Z/bz2/lzma/xz/lz4/zstd), documents and more. A faster, user-friendly and compatible grep replacement.

search vim unicode interactive zip regex tar fuzzy-search code-search recursively-search source-code grep ripgrep silver-searcher hexdump file-search text-search shell-utilities grepping grep-search

Constellio - Enterprise Search engine

•    Java

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Constellio Open Source Enterprise Search is based on Apache Solr and using Google Search Appliances connectors architecture, it allows, with a single click, to find all relevant content in your organization (Web, email, ECM, CRM etc.).

search-engine searchengine full-text-search enterprise-search enterprise

CodeBeagle

•    Python

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A tool to search source code based on a full text index

codequery - A code-understanding, code-browsing or code-search tool

•    C++

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This is a tool to index, then query or search C, C++, Java, Python, Ruby, Go and Javascript source code. It builds upon the databases of cscope and Exuberant ctags. It can also work with Universal ctags, which is a drop-in replacement for Exuberant ctags.

cscope ctags code-analysis code-search

Sando: A Fast Local Code Search Engine with Open APIs

•    

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Code search sucks. There's no auto-correct or suggestions and results are returned as an unranked, plain-text list. This VS Extension aims to make code search a modern tool by leveraging Lucene to index and search all languages and artifacts, returning results in a rich UI.

algoliasearch-client-php - Algolia Search API Client for PHP

•    PHP

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Algolia Search is a hosted full-text, numerical, and faceted search engine capable of delivering realtime results from the first keystroke. The Algolia Search API Client for PHP lets you easily use the Algolia Search REST API from your PHP code.

search-engine algolia-search algolia faceted-search search-synonyms geo-search search api-client

Haystack - Modular search for Django

•    Python

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Haystack lets you write your search code once and choose the search engine you want it to run on. With a familiar API that should make any Djangonaut feel right at home and an architecture that allows you to swap things in and out as you need to, it's how search ought to be. It plays nicely with third-party app without needing to modify the source and supports Solr, Elasticsearch, Whoosh and Xapian.

django-module search-plugin

Carrot2 - Search Results Clustering Engine

•    Java

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Carrot2 is an Open Source Search Results Clustering Engine. It could cluster the search results from various sources and generates small collection of documents. Carrot2 offers ready-to-use components for fetching search results from various sources including YahooAPI, GoogleAPI, Bing API, eTools Meta Search, Lucene, SOLR, Google Desktop and more.

cluster result-cluster searchengine-cluster

The Silver Searcher - A code-searching tool similar to ack, but faster.

•    C

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A code-searching tool similar to ack, but faster. It ignores file patterns from your .gitignore and .hgignore. If there are files in your source repo you don't want to search, just add their patterns to a .ignore file. (*cough* *.min.js *cough*)

text-search regex regular-expression grep code-search cli boyer-moore command-line

spreadingvectors - Open source implementation of "Spreading Vectors for Similarity Search"

•    Python

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This is the open source implementation of the neural Catalyzer for similarity search. This code reproduces the results from the ICLR'2019 paper Spreading Vectors for Similarity Search. This code can run as is on a standard computer, but it detects if a GPU is present and automatically uses it.

Live Helper Chat - Live support for your website

•    PHP

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Live Helper Chat is an Open source live support chat for your website with bot, Voice & Video & ScreenShare, AI, Rest API integrations. You can also use LHC with any AI like Rasa or DeepPavlov.

chat video-call audio-call chat-application live-support livehelp live-help screenshare support-chat support