Developer and AI tools

167 tools ranked by real usage. Stats updated 13 minutes ago.

8 tools in LLM Frameworks

Tool	Pricing	GitHub stars	npm a week	Last release
LangChainOpen source framework for building applications with language models, paired with the LangSmith platform.	Freemium	148k	3.7M	7 hours ago
CrewAIMIT-licensed Python framework for multi-agent workflows, with a paid platform for deployment.	Open source	59.8k	None	2 days ago
LlamaIndexOpen source data framework for connecting language models to your own data, plus a paid parsing platform.	Freemium	52.5k	159k	3 weeks ago
LangGraphLow-level orchestration framework from LangChain for long-running, stateful agents.	Open source	43.4k	None	4 hours ago
DSPyPython framework from Stanford NLP for programming language model systems instead of writing prompts.	Open source	38.7k	None	4 days ago
MastraTypeScript framework for AI agents and workflows, Apache 2.0 licensed, with a managed platform.	Open source	28.9k	2.3M	18 hours ago
Vercel AI SDKFree open source TypeScript toolkit from Vercel for building AI apps and agents across many model providers.	Open source	27.4k	34M	6 hours ago
HaystackOpen source Python framework from deepset for building LLM applications, RAG pipelines and agents.	Open source	26.8k	None	1 day ago