Top 50 AI Agent Tools — June 2026

How do you know which tools for a specific job are actually maintained and shipping? ToolVitals ranks tools by use case, so alternatives are compared against open/source-visible software that solves the same problem.

This leaderboard ranks up to the top 50 scored tools we track for AI Agent Tools. Proprietary targets and unknown-license tools are excluded. ToolVitals score is the primary ordering signal, and GitHub stars are listed as a popularity context signal plus a secondary tie-breaker.

Rankings

Rank	Tool	Openness	License	Health	Shipping	GitHub Stars	Score	Status
1	LangChain	OSI-approved OSS	MIT	100	100	138238	100	🟢 Excellent
2	Onyx	OSI-approved OSS	MIT	98	100	29954	99	🟢 Excellent
3	Cua	OSI-approved OSS	MIT	98	100	17429	99	🟢 Excellent
4	Agent Deck	OSI-approved OSS	MIT	98	100	2585	99	🟢 Excellent
5	Hermes Agent	OSI-approved OSS	MIT	95	100	175932	98	🟢 Excellent
6	OpenViking	OSI-approved OSS	AGPL-3.0	95	100	25015	98	🟢 Excellent
7	Assistant UI	OSI-approved OSS	MIT	95	100	10373	98	🟢 Excellent
8	ScreenPipe	OSI-approved OSS	MIT	93	100	19050	97	🟢 Excellent
9	Emdash	OSI-approved OSS	Apache-2.0	95	98	4719	97	🟢 Excellent
10	OpenClaw	OSI-approved OSS	MIT	91	100	376069	96	🟢 Excellent
11	Dyad	OSI-approved OSS	Apache-2.0	93	98	20498	96	🟢 Excellent
12	TensorZero	OSI-approved OSS	Apache-2.0	95	95	11426	96	🟢 Excellent
13	MemMachine	OSI-approved OSS	Apache-2.0	95	95	3103	96	🟢 Excellent
14	SmolVM	OSI-approved OSS	Apache-2.0	93	98	569	96	🟢 Excellent
15	RAGFlow	OSI-approved OSS	Apache-2.0	93	95	81670	95	🟢 Excellent
16	MLflow	OSI-approved OSS	Apache-2.0	93	95	26238	95	🟢 Excellent
17	Archestra	OSI-approved OSS	AGPL-3.0	91	98	3756	95	🟢 Excellent
18	Open Mercato	OSI-approved OSS	MIT	91	95	1355	95	🟢 Excellent
19	Qodo PR Agent	OSI-approved OSS	Apache-2.0	98	84	11432	94	🟢 Excellent
20	Agent Device	OSI-approved OSS	MIT	87	98	2377	94	🟢 Excellent
21	Mux	OSI-approved OSS	AGPL-3.0	87	98	1799	94	🟢 Excellent
22	Backend.AI	OSI-approved OSS	LGPL-3.0	88	98	643	94	🟢 Excellent
23	marketingskills	OSI-approved OSS	MIT	93	92	31506	93	🟢 Excellent
24	Casibase	OSI-approved OSS	Apache-2.0	87	95	5113	93	🟢 Excellent
25	Ralphex	OSI-approved OSS	MIT	91	94	1208	93	🟢 Excellent
26	Signet AI	OSI-approved OSS	Apache-2.0	85	98	179	93	🟢 Excellent
27	Clawdi	OSI-approved OSS	MIT	87	95	82	93	🟢 Excellent
28	Octopus	OSI-approved OSS	MIT	88	95	74	93	🟢 Excellent
29	prompt-optimizer	OSI-approved OSS	AGPL-3.0	90	95	30261	92	🟢 Excellent
30	BrowserOS	OSI-approved OSS	AGPL-3.0	87	92	11201	92	🟢 Excellent
31	SkillHub	OSI-approved OSS	Apache-2.0	88	95	3274	92	🟢 Excellent
32	Moltis	OSI-approved OSS	MIT	87	95	2716	92	🟢 Excellent
33	Any LLM	OSI-approved OSS	Apache-2.0	91	89	2040	92	🟢 Excellent
34	Milady	OSI-approved OSS	MIT	85	98	394	92	🟢 Excellent
35	Memtomem	OSI-approved OSS	Apache-2.0	84	98	6	92	🟢 Excellent
36	RamaLama	OSI-approved OSS	MIT	87	89	2870	91	🟢 Excellent
37	LetsFG	OSI-approved OSS	MIT	84	95	1143	91	🟢 Excellent
38	parallel-code	OSI-approved OSS	MIT	83	98	696	91	🟢 Excellent
39	IronCurtain	OSI-approved OSS	Apache-2.0	87	90	485	91	🟢 Excellent
40	ShanClaw	OSI-approved OSS	MIT	84	95	289	91	🟢 Excellent
41	Aurora	OSI-approved OSS	Apache-2.0	86	94	256	91	🟢 Excellent
42	Nightshift	OSI-approved OSS	Apache-2.0	83	95	34	91	🟢 Excellent
43	Astron Agent	OSI-approved OSS	Apache-2.0	88	93	8527	90	🟢 Excellent
44	OfficeCLI	OSI-approved OSS	Apache-2.0	81	93	5537	90	🟢 Excellent
45	GPUStack	OSI-approved OSS	Apache-2.0	84	93	5083	90	🟢 Excellent
46	CC GUI	OSI-approved OSS	MIT	84	95	2732	90	🟢 Excellent
47	YAMS	OSI-approved OSS	GPL-3.0	81	95	373	90	🟢 Excellent
48	TopK	OSI-approved OSS	MIT	88	84	73	90	🟢 Excellent
49	Sqry	OSI-approved OSS	MIT	82	98	19	90	🟢 Excellent
50	DocsGPT	OSI-approved OSS	MIT	84	87	17914	89	🟢 Excellent

Top 3 Highlights

The agent engineering platform. With a ToolVitals score of 100, LangChain leads the AI Agent Tools use case while also carrying 138238 GitHub stars.

Open Source AI Platform - AI Chat with advanced features that works with every LLM. At 99, Onyx comes in strong as the runner-up, with 29954 GitHub stars for extra context.

Open-source infrastructure for computer-use agents, with sandboxes, SDKs, and benchmarks. Rounding out the top three with a score of 99, Cua pairs visible maintenance signals with 17429 GitHub stars.

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