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Fess: Open-source, self-hosted enterprise & site search server built on OpenSearch. It is listed under Development & Code on AI Registry as a free tool.
The tools below are approved listings in the same category, ordered by how closely their tags match Fess. This is an automatic list. We have not written a researched verdict for Fess yet, so treat it as a shortlist and check each vendor's pricing page before switching.
Built from each tool's listing. Vendors can update their own listing after claiming it.
Fast, lightweight Firecrawl/Tavily alternative in Rust.
fastCRW is a web data API for AI agents that searches, scrapes, crawls, maps and extracts web content through one managed endpoint. It turns a URL into clean markdown, JSON or HTML with full JavaScript rendering, crawls whole sites into structured data, discovers every URL on a domain, pulls structured JSON with a prom...
PipesHub is an open-source platform for securely connecting enterprise knowledge to AI.
PipesHub is an open source workplace AI platform that connects a company's scattered business data to AI agents and search. It positions itself as an open source alternative to Glean, licensed under Apache 2.0 and deployable on the customer's own infrastructure. The platform indexes content from systems such as Slack,...
There's a simpler way to ground your AI.
Antfly is a retrieval engine that grounds AI apps and agents in an organization's own knowledge. It combines vector, keyword and graph search as indexes inside one database, fused in a single query plan, and performs chunking, embedding, indexing and reranking inside the engine as data arrives, so there is no separate ...
ArcadeDB Multi-Model Database, one DBMS that supports SQL, Cypher, Gremlin, HTTP/JSON, MongoDB and Redis.
ArcadeDB is an open source multi model database developed by Arcade Data Ltd. A single engine natively stores graphs, JSON documents, key value pairs, full text search indexes, vectors and time series data, with full ACID transactions, so an application that needs several data shapes does not have to run several databa...
Run AI agents on real and isolated machines — own kernel, filesystem, and network — with <100ms boot.
ArcBox is an agent computer platform that gives each AI agent its own isolated machine, a full operating system with its own kernel, filesystem and network. The same environment comes in three lifetimes: a Computer the agent keeps between tasks with snapshot and resume, a Sandbox created in milliseconds and destroyed w...
Enterprise-grade API gateway that helps you monitor and impose cost or rate limits per API key.
BricksLLM is an open source AI gateway, written in Go, that sits between applications and model providers to control and monitor how LLMs are used in production. It was built by Bricks, a Y Combinator company, and is released under the MIT license. Teams route requests through the gateway instead of calling providers d...