Chroma
Chroma · Vector databases
Open-source embedding database with a minimal Python and JavaScript API, usable in-process, as a server or through Chroma Cloud
Apache-2.0Open sourceUsage-basedLocalSelf-hostedNov 2, 2026
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Firecrawl
Firecrawl (formerly Mendable) · Data collection & crawling
Web data API that scrapes, crawls, maps and searches websites and returns clean Markdown or structured JSON for LLM pipelines, with an AGPL-licensed self-hostable core
AGPL-3.0-onlyFreemiumPaidSelf-hostedNov 2, 2026
Kùzu
Kùzu Inc. (company acquired; project archived) · NoSQL & key-value stores
Embedded property-graph database with Cypher, vector and full-text search; MIT-licensed but archived in October 2025 after the company was acquired
MITOpen sourceFreeLocalDiscontinuedNov 2, 2026
Neo4j
Neo4j, Inc. · NoSQL & key-value stores
Native property-graph database queried with Cypher, offered as a GPL community edition, a commercial enterprise edition and the AuraDB cloud service
GPL-3.0Open sourceFreemiumSelf-hostedBroken
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