ToolVitals
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Agent infrastructure

AI Agent Stack

Source-visible frameworks, runtimes, orchestration layers, and tool integrations used to build and operate AI agents.

659 tracked50 ranked verdictsPublic evidence only

Buyer checklist

What to verify before adopting

  1. Does the project expose enough code and release history to evaluate maintenance risk?
  2. Does it focus on orchestration, tool execution, memory, evaluation, or deployment?
  3. Is recent shipping activity substantive or mostly dependency and packaging churn?

Explore this ecosystem by job

AI Agent Tools343Browser Automation37Developer Infrastructure25Observability24Workflow Automation23Notes & Knowledge Base17Knowledge Base11API Development & Testing10

Evidence ranking

Leading projects in this ecosystem

Ordered by ToolVitals score, health, shipping, confidence, and adoption tie-breakers. Openness labels are shown explicitly.

#ToolHealthShippingStarsOpennessScore
1Hermes AgentThe agent that grows with you99100243.6kOSI-approved OSS99
2OpenClawYour own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞9999389.3kOSI-approved OSS99
3RAGFlowRAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs999990.4kOSI-approved OSS99
4MastraFramework for building AI-powered applications and agents with TypeScript.999927.9kOSI-approved OSS99
5UnslothWeb UI for training and running open models like Gemma 4, Qwen3.5, DeepSeek, gpt-oss locally.989975.9kOSI-approved OSS99
6OrcaIDE for building with coding agents.989965kOSI-approved OSS99
7CopilotKitThe Frontend Stack for Agents & Generative UI. React + Angular. Makers of the AG-UI Protocol989937.3kOSI-approved OSS99
8ElizaOSAutonomous agents for everyone989919.3kOSI-approved OSS99
9OmiAI that sees your screen, listens to your conversations and tells you what to do989913.4kOSI-approved OSS99
10career-opsAI-powered job search system built on Claude Code. 14 skill modes, Go dashboard, PDF generation, batch processing.999870.7kOSI-approved OSS98
11LiteLLMPython SDK, Proxy Server (AI Gateway) to call 100+ LLM APIs in OpenAI (or native) format, with cost tracking, guardrails, loadbalancing and logging. [Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic, Sagemaker, HuggingFace, VLLM, NVIDIA NIM]989958.4kOSI-approved OSS98
12Kilo CodeKilo is the all-in-one agentic engineering platform. Build, ship, and iterate faster with the most popular open source coding agent.989927.2kOSI-approved OSS98
13Entire CLIGit workflow tool that captures AI agent sessions and indexes them alongside commits.98995.1kOSI-approved OSS98
14Vellum AssistantPersonal AI assistant with memory and proactive reach-outs.98991.2kOSI-approved OSS98
15SliccBrowser-native AI agent platform.989930OSI-approved OSS98
16OpenCodeThe open source coding agent.9898206.1kOSI-approved OSS98
17PiAI agent toolkit: coding agent CLI, unified LLM API, TUI & web UI libraries, Slack bot, vLLM pods9898103.4kOSI-approved OSS98
18Goosean open source, extensible AI agent that goes beyond code suggestions - install, execute, edit, and test with any LLM989854.1kOSI-approved OSS98
19MulticaThe open-source managed agents platform. Turn coding agents into real teammates — assign tasks, track progress, compound skills.989849.4kOSI-approved OSS98
20LocalAILocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.989849kOSI-approved OSS98
21OpenVikingSelf-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills.989836.6kOSI-approved OSS98
22Langfuse🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23989834.4kOSI-approved OSS98
23OnyxOpen Source AI Platform - AI Chat with advanced features that works with every LLM989832kOSI-approved OSS98
24ComposioComposio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.989830.1kOSI-approved OSS98
25KestraEvent Driven Orchestration & Scheduling Platform for Mission Critical Applications989828.1kOSI-approved OSS98
26ActivepiecesAI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents989824.4kOSI-approved OSS98
27OpikDebug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.989821.9kOSI-approved OSS98
28PaseoOrchestrate coding agents remotely from your phone, desktop and CLI989816.8kOSI-approved OSS98
29BifrostFastest enterprise AI gateway (50x faster than LiteLLM) with adaptive load balancer, cluster mode, guardrails, 1000+ models support & <100 µs overhead at 5k RPS.98988kOSI-approved OSS98
30agent-of-empiresTool for managing multiple coding agents from web or TUI.98983.2kOSI-approved OSS98
31Future AGIOpen-source platform for evaluating, observing, and improving LLM and AI agent applications.98982kOSI-approved OSS98
32Open MercatoAI‑supportive CRM / ERP / Business application framework — built to power R&D, operations, and growth. It’s modular, extensible, and designed for teams that want strong defaults with room to customize everything. Better than Django, Retool and other alternatives - and Enterprise Grade!98981.7kOSI-approved OSS98
33AktoOpen-source API security platform for discovery, posture, and CI/CD testing.98981.5kOSI-approved OSS98
34ThunderIdentity and access management product by WSO2.9898574OSI-approved OSS98
35texeraCollaborative Machine-Learning-Centric Data Analytics Using Workflows9898310OSI-approved OSS98
36OpenHands🙌 OpenHands: AI-Driven Development989787kOSI-approved OSS98
37OpenAI Agents SDKA lightweight, powerful framework for multi-agent workflows989729.3kOSI-approved OSS98
38HaystackOpen-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.989726.5kOSI-approved OSS98
39WeKnoraOpen-source LLM knowledge platform for queryable RAG, autonomous reasoning, and self-maintaining wiki workflows.989721.9kOSI-approved OSS98
40InsForgeOpen-source backend platform for agentic coding with database, auth, storage, compute, hosting, and AI gateway components.989712.9kOSI-approved OSS98
41Deco StudioOpen-source control plane for managing AI agents, tools, and usage.9799405OSI-approved OSS98
42CuaOpen-source infrastructure for computer-use agents, with sandboxes, SDKs, and benchmarks.979822.4kOSI-approved OSS98
43Assistant UIOpen-source React and TypeScript library for building AI chat interfaces.979812.1kOSI-approved OSS98
44LangWatchThe platform for LLM evaluations and AI agent testing97983.5kOSI-approved OSS98
45LangChainThe agent engineering platform9897146kOSI-approved OSS97
46Browser Use🌐 Make websites accessible for AI agents. Automate tasks online with ease.9897113.9kOSI-approved OSS97
47ToolJetToolJet is the open-source foundation of ToolJet AI - the enterprise app generation platform for building internal tools, dashboard, business applications, workflows and AI agents 🚀989740.9kOSI-approved OSS97
48MLflowThe open source AI engineering platform for agents, LLMs, and ML models. MLflow enables teams of all sizes to debug, evaluate, monitor, and optimize production-quality AI applications while controlling costs and managing access to models and data.989727.9kOSI-approved OSS97
49AxonHub⚡️ Open-source AI Gateway — Use any SDK to call 100+ LLMs. Built-in failover, load balancing, cost control & end-to-end tracing.98975.2kOSI-approved OSS97
50ToolHivePlatform for running and managing MCP servers.98972.2kOSI-approved OSS97

Also on evidence watch

Tracked matches that need stronger public evidence before receiving a ranked verdict.

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