Directory

Agent engineering frameworks

This directory tracks 18 open-source agent-engineering frameworks across GitHub activity, package downloads and release cadence. Every figure carries the source that reported it and the moment it was observed. Values that fail validation are withheld rather than shown, and the last verified snapshot stays on the page until a clean sync replaces it.
Frameworks
18
Stars tracked
682,608
With download data
10/18
Last sync
2h agoquarantined
AgnoStars42,325+14GitHub REST API · 2h agoLettaStars24,864+13GitHub REST API · 2h agoDeepEvalStars18,419+16GitHub REST API · 2h agoRagasStars15,834+5GitHub REST API · 2h agoPydantic AIStars20,133+9GitHub REST API · 2h agosmolagentsStars29,463+9GitHub REST API · 2h agoMastraStars28,295+25GitHub REST API · 2h agoVercel AI SDKStars26,922+20GitHub REST API · 2h agoGuardrailsStars7,443+1GitHub REST API · 2h agoInstructorStars13,939+4GitHub REST API · 2h agoDSPyStars38,243+25GitHub REST API · 2h agoHaystackStars26,584+4GitHub REST API · 2h ago
15 agent engineering frameworks, sorted by stars. Each row shows the last time the ranked figure was observed.
Select to compareFrameworkStarsDownloads/wkLast commitLanguageLicenceOpen roles7-day starsChecked
LangChainLangChain146,9562,026,447pythonMIT747-day stars: 7 readings, 146.6K to 147.0K.Current2h ago
AutoGenMicrosoft61,13047,487pythonCC-BY-4.017-day stars: 7 readings, 61.0K to 61.1K.Current2h ago
CrewAICrewAI58,958pythonMIT67-day stars: 7 readings, 58.7K to 59.0K.Current2h ago
LlamaIndexLlamaIndex52,30683,631pythonMIT107-day stars: 7 readings, 52.2K to 52.3K.Current2h ago
AgnoAgno42,325520,626pythonApache-2.07-day stars: 7 readings, 42.2K to 42.3K.Current2h ago
LangGraphLangChain42,2012,342,174pythonMIT707-day stars: 7 readings, 41.9K to 42.2K.Current2h ago
DSPyStanford NLP38,243pythonMIT27-day stars: 7 readings, 38.1K to 38.2K.Current2h ago
smolagentsHugging Face29,463132,630pythonApache-2.07-day stars: 7 readings, 29.4K to 29.5K.Current2h ago
Haystackdeepset26,584pythonApache-2.027-day stars: 7 readings, 26.5K to 26.6K.Current2h ago
LettaLetta24,864pythonApache-2.07-day stars: 7 readings, 24.8K to 24.9K.Current2h ago
Pydantic AIPydantic20,1333,076,771pythonMIT37-day stars: 7 readings, 20.0K to 20.1K.Current2h ago
DeepEvalConfident AI18,419pythonApache-2.07-day stars: 7 readings, 18.3K to 18.4K.Current2h ago

3 of 3 frameworks selected

Sources: GitHub REST API, npm registry downloads, PyPI registry metadata, pypistats.org downloads. Every value carries the moment it was observed; figures that failed validation are withheld rather than shown. SLA: current within 48h, ageing to 168h, stale beyond 336h.

indexable · canonical /frameworks?language=python

Also tracked

Other datasets

Same engine, same provenance rules — every figure carries the source that reported it and when.

Smoke dataset

A fixture dataset that exercises the ingestion, validation and freshness machinery.

4 tracked

Language and embedding models

Language, embedding and speech models tracked across Hugging Face Hub download activity and OpenRouter context windows and pricing.

18 tracked

Local inference hardware

GPUs, accelerators and SoCs for running models locally, with VRAM, memory bandwidth, power draw and list price.

10 tracked