FFirecrawlFirecrawl (formerly Mendable) · Data collection & crawlingIn-depth entryWeb 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 coreAGPL-3.0-onlyFreemiumPaidSelf-hostedNov 2, 2026
NNeo4jNeo4j, Inc. · NoSQL & key-value storesNative property-graph database queried with Cypher, offered as a GPL community edition, a commercial enterprise edition and the AuraDB cloud serviceGPL-3.0Open sourceFreemiumSelf-hostedBroken
WWeaviateWeaviate B.V. · Vector databasesOpen-source vector database in Go with pluggable vectorizer modules, hybrid BM25 and vector search, multi-tenancy and a managed cloudBSD-3-ClauseOpen sourceFreemiumSelf-hostedBroken