Alternatives to Coveo in 2026

Typesense typesense

Open Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch ⚡ 🔍 ✨ Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences

Building block Production-ready You want Algolia-style instant search for a site or app that you can self-host cheaply.

★ 27k GPL-3.0 C++ Active, pushed 3 days ago

Sonic valeriansaliou

🦔 Fast, lightweight & schema-less search backend. An alternative to Elasticsearch that runs on a few MBs of RAM.

Building block Usable You need fast autocomplete and text search on a small server and can store documents elsewhere.

★ 21k MPL-2.0 Rust Active, pushed 3 days ago

OpenSearch opensearch-project

🔎 Open source distributed and RESTful search engine.

Building block Production-ready You need Elasticsearch-class search under the Apache licence or run on AWS's managed OpenSearch.

★ 14k Apache-2.0 Java Active, pushed today

Manticoresearch manticoresoftware

Open-source search database for full-text, vector, and hybrid search with real-time indexing and SQL.

Building block Production-ready You want a lighter Elasticsearch alternative and like querying search with SQL.

★ 12k GPL-3.0 C++ Active, pushed today

Quickwit quickwit-oss

Cloud-native OSS search engine for observability

Building block Usable You need cheap, large-scale log search and want to move off Elasticsearch.

★ 12k Apache-2.0 Rust Active, pushed today

ParadeDB paradedb

One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.

Building block Usable You want Elasticsearch-quality search on data already in Postgres without running a separate search cluster.

★ 9.5k AGPL-3.0 Rust Active, pushed today

Infinity infiniflow

The AI-native database built for LLM applications, providing incredibly fast hybrid search of dense vector, sparse vector, tensor (multi-vector), and full-text.

Building block Experimental You need hybrid retrieval with tensor reranking for RAG and want it in a single engine.

★ 4.8k Apache-2.0 C++ Active, pushed today

USearch unum-cloud

Fast Open-Source Search & Clustering engine × for Vectors & Arbitrary Objects × in C++, C, Python, JavaScript, Rust, Java, Objective-C, Swift, C#, GoLang, and Wolfram 🔍

Building block Production-ready You want to embed fast vector search into an application or database rather than run a vector database server.

★ 4.4k Apache-2.0 C++ Active, pushed 2 days ago

Zvec-grep zvec-ai

Local-first search across your workspace, built for humans and AI agents.

Developer tool Experimental You or your coding agent need to find things in a large workspace when you do not know the exact words.

★ 4.2k Apache-2.0 Rust Active, pushed today

Pg_textsearch timescale

PostgreSQL extension for BM25 relevance-ranked full-text search. Postgres OSS licensed.

Building block Usable You want better-ranked keyword search inside Postgres without a separate search engine, under a permissive license.

★ 4.1k PostgreSQL C Active, pushed today

FlexSearch nextapps-de

Next-generation full-text search library for Browser and Node.js

Building block Production-ready You need fast client-side or in-process search over a modest dataset without a search server.

★ 14k Apache-2.0 JavaScript Slowing, pushed 4 months ago

Seekdb oceanbase

The AI-Native Search Database. Best for agent storage, it unifies vector, text, structured, and semi-structured data into a single engine. This all-in-one database makes agents smarter, easier to run, and more stable.

Building block Experimental You are building AI agents that need hybrid search and safe copy-on-write state in one SQL database.

★ 3.2k Apache-2.0 C++ Active, pushed today

TNTSearch teamtnt

A fully featured full text search engine written in PHP

Building block Production-ready A PHP or Laravel app needs decent search on shared hosting where you cannot run a search server.

★ 3.2k MIT PHP Active, pushed 4 days ago

Spice.ai spiceai

Add a real-time analytics node to your operational database. Spice is a portable, accelerated SQL query, search, and LLM-inference engine in Rust for data-grounded AI apps and agents.

Building block Usable Your app or agent needs fast queries over data scattered across several sources without building a pipeline.

★ 3.1k Apache-2.0 Rust Active, pushed today

Sync-in Server Sync-in

Sync-in · Sovereign platform for file storage, sharing, synchronization, and collaboration.

Complete system Usable A small organisation wants a lighter Nextcloud alternative focused on files, sharing and document editing on its own servers.

★ 2k AGPL-3.0 TypeScript Active, pushed yesterday

SeekStorm SeekStorm

SeekStorm: vector & lexical search - in-process library & multi-tenancy server, in Rust.

Building block Usable You need very fast full-text search in a Rust application or a lightweight search server.

★ 1.9k Apache-2.0 Rust Active, pushed 2 days ago

Walrus coleifer

Lightweight Python utilities for working with Redis

Building block Usable Your Python app uses Redis and you want ready-made higher-level structures.

★ 1.2k MIT Python Active, pushed 19 days ago

Fess codelibs

Open-source, self-hosted enterprise & site search server built on OpenSearch. Crawls web / file / DB / cloud sources, 20+ languages, REST API, and AI/RAG & semantic search. Apache-2.0.

Complete system Production-ready Your organisation wants one internal search across intranet sites and file shares without building on Elasticsearch directly.

★ 1.1k Apache-2.0 Java Active, pushed today

KiviDB kividbio

A fast, multi-threaded Redis® and Valkey alternative written in Rust: drop-in compatible, with full-text and vector search built in

Building block Experimental You want to experiment with a faster drop-in for Redis on many-core servers.

★ 1.1k AGPL-3.0 Rust Active, pushed today

Groonga groonga

An embeddable fulltext search engine. Groonga is the successor project to Senna.

Building block Production-ready You need fast full-text search over Japanese or other CJK text, especially inside MySQL or Postgres.

★ 859 LGPL-2.1 C Active, pushed 5 days ago

WinShun LingCore

Win顺：免费开源的 Windows 快速搜索启动器。双击 Ctrl，拼音秒搜文件、全文搜索 Word/Excel/PDF、剪贴板历史（代替 Win+V）、对话框搜索、任务栏搜索、插件、AI 助手 MCP。Free Windows search launcher: pinyin file search, full-text search, clipboard history, MCP server. Everything/Listary alternative.

Complete system Experimental You use Windows, often search in Chinese, and want an Everything or Listary alternative.

★ 826 MIT C++ Active, pushed today

Wiki-Go leomoon-studios

A modern, feature-rich, databaseless flat-file wiki platform built with Go.

Complete system Usable You want a simple self-hosted wiki that stores pages as files.

★ 624 GPL-3.0 Go Active, pushed 22 days ago

Kensaku yjid

Search inside documents, code, and even screenshots - instantly and locally. A free, open-source file launcher with OCR, semantic search, and MCP agent access.

Complete system Experimental You want fast local search inside files and images on your computer without sending data anywhere.

★ 589 MIT Rust Active, pushed today

Yt-fts NotJoeMartinez

YouTube Full Text Search - Search all of YouTube from the command line

Developer tool Experimental You want to find where a topic was discussed across a channel's videos.

★ 1.8k Unlicense Python Slowing, pushed 10 months ago

CortexDB liliang-cn

Local-first AI agent memory with a knowledge graph, ontology constraints, and traceable reasoning—all in one SQLite file.

Building block Experimental A Go-based agent needs embedded long-term memory with no external services.

★ 476 MIT Go Active, pushed today

Rootprint rootprint

Open-source, self-hosted logs and traces with full-text search directly on S3-compatible object storage.

Complete system Experimental You want cheap log and trace retention on object storage with a simple UI.

★ 441 Apache-2.0 Svelte Active, pushed today

Ataru lovstudio

High-performance AI memory retrieval for local agent history — a Rust search core (SDK / API / JSON CLI) plus a desktop GUI. Tantivy + Jieba keyword search, optional semantic recall, stable Turn/Run/Session/Project IDs.

Developer tool Experimental You use several coding agents and keep losing useful answers buried in old sessions.

★ 361 Apache-2.0 Rust Active, pushed 2 months ago

FlashRank PrithivirajDamodaran

Lite & Super-fast re-ranking for your search & retrieval pipelines. Supports SoTA Listwise and Pairwise reranking based on LLMs and cross-encoders and more. Created by Prithivi Da, open for PRs & Collaborations.

Building block Usable You want to improve RAG retrieval quality with reranking at low cost and latency.

★ 1k Apache-2.0 Python Slowing, pushed 4 months ago

FoJin xr843

Buddhist Digital Text Platform — 10,500+ texts, 613 sources, trilingual cross-canon, AI Q&A (RAG), knowledge graph, full-text search

Complete system Usable You study Buddhist texts and want cross-canon search and cited answers.

★ 355 Apache-2.0 Python Active, pushed today

Redd-Archiver 19-84

A PostgreSQL-backed archive generator that creates browsable HTML archives from link aggregator platforms including Reddit, Voat, and Ruqqus.

Developer tool Usable You want to preserve and browse subreddit history offline from existing data dumps.

★ 350 Unlicense Python Active, pushed yesterday

Algolia Algolia

18,000+ organizations trust Algolia to build intuitive, adaptive, high-performing experiences with a unified AI search & retrieval platform spanning agentic, generative, and search.

Building block Production-ready An ecommerce or content site needs fast, polished search quickly and can pay for it.

194 readers a month Commercial

Elastic Cloud Elastic NV

Elastic Cloud is a family of Elasticsearch SaaS offerings — including hosted Elasticsearch, hosted app search, and hosted site search — that make it easy to deploy, operate, and scale Elastic products...

Building block Production-ready You need Elasticsearch for search or logs and would rather pay Elastic than run clusters yourself.

Commercial