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CrewAI

CrewAI, Inc. · Agent frameworks & orchestration

Open-source Python framework for role-based multi-agent crews and event-driven flows, with a commercial enterprise console for deploying, monitoring and triggering automations

MITOpen sourceFreemiumLocalSelf-hostedNov 2, 2026

LiteLLM

BerriAI · Prompting, evaluation & observability

In-depth entry

Open-source Python SDK and self-hosted AI gateway that calls 100+ LLM providers in the OpenAI format, with routing, fallbacks, virtual keys, budgets, spend tracking and logging callbacks

MITOpen sourceFreeLocalSelf-hostedNov 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

Weaviate

Weaviate B.V. · Vector databases

Open-source vector database in Go with pluggable vectorizer modules, hybrid BM25 and vector search, multi-tenancy and a managed cloud

BSD-3-ClauseOpen sourceFreemiumSelf-hostedBroken

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