📖 The AI Tool Bible

Agents

Autonomous and orchestrated multi-step AI workers.

188 tools

Why it matters

The agent ecosystem is the youngest category here — frameworks, orchestrators, and end-to-end autonomous workers are evolving fast, with reliability and observability still maturing.

What's in here

Includes orchestration frameworks (LangGraph, CrewAI, Claude Agent SDK), end-to-end product agents (Devin, Manus), and open-source platforms (AutoGPT, OpenAI Swarm).

How to pick

Pick LangGraph when production reliability matters. Pick CrewAI for fast multi-agent prototyping. Pick Claude Agent SDK if you're Claude-aligned. Use Devin / Manus when you want a finished agent product, not a framework.

OpenMetadata

Agents
7.4

Open-source metadata platform that gives AI agents a semantic context graph over your data stack.

Freemium· Free self-hosted OSS; Collate managed cloud has free tier + paid plansdata-catalogagent-context

Agent Lightning

Agents · Multi-model
7.3

Microsoft's open-source trainer that fine-tunes AI agents with RL and prompt optimization, framework-agnostic.

Free· Free, MIT-licensed open sourceagent-trainingreinforcement-learning

AgentMemory

Agents · Multi-model (Claude, Gemini, MiniMax, OpenRouter)
7.3

Open-source persistent memory runtime for AI coding agents, with hybrid retrieval and zero external dependencies.

Free· Free, open-source (Apache 2.0); bring your own LLM API keyagent-memorycoding-agents

AstrBot

Agents · Multi-model (OpenAI, Anthropic, Gemini, DeepSeek, Ollama, Dify, Coze)
7.3

Open-source agentic AI assistant that bridges chat platforms like Telegram, Discord, and QQ with any LLM and a 1000+ plugin ecosystem.

Free· Free, open-source (AGPL-3.0); self-hosted, you pay your own LLM API costs.chatbotgroup-chat-assistant

Bifrost

Agents · Multi-model (OpenAI, Anthropic, Bedrock, Vertex, 1000+ via providers)
7.3

Open-source AI gateway that unifies 1000+ models behind one OpenAI-compatible endpoint with failover, budgets, and MCP routing.

Freemium· Open-source core (Apache 2.0); Enterprise tier with 14-day free trial, pricing on requestllm-gatewaymulti-provider-routing

CAI

Agents · Multi-model (incl. alias1, GPT, Claude, DeepSeek)
7.3

Open-source agent framework for offensive security, bug bounty automation, and AI-driven penetration testing.

Freemium· Open source free; CAI PRO ~EUR 350/mopenetration-testingbug-bounty

Gorilla

Agents · gorilla-openfunctions-v2 (6.91B)
7.3

Open-source LLM purpose-built for function calling and API invocation across thousands of tools.

Free· Free and Apache 2.0; self-hostedfunction-callingtool-use

Guizang PPT Skill

Agents · Multi-model (Claude, Codex, GPT-Image)
7.3

Claude Code / Codex agent skill that generates single-file HTML slide decks in editorial-magazine or Swiss-design styles.

Free· Free, AGPL-3.0; requires a host AI agent (Claude Code, Codex, etc.)html-slide-deckspresentation-design

Kong AI Gateway

Agents · Multi-model
7.3

Enterprise API gateway extended to route, govern, and observe LLM and agent traffic across providers.

Freemium· OSS free; Konnect usage-based; Enterprise quote-onlyllm-gatewaymulti-llm-routing

Kubeflow

Agents · Multi-framework (PyTorch, JAX, XGBoost, TensorFlow)
7.3

Open-source toolkit for running the full ML lifecycle on Kubernetes.

Free· Free and open source; commercial distributions and managed offerings priced separately by vendorsml-pipelinesdistributed-training

OpenBB

Agents · Multi-model (Agent Rita is model-agnostic)
7.3

Open-source financial workspace where analysts and AI agents share the same governed data.

Freemium· Free Community Edition; paid Pro tiers via pro.openbb.cofinancial-researchinvestment-workflows

Seldon

Agents · Multi-model (bring your own)
7.3

Kubernetes-native MLOps platform for deploying and orchestrating ML and generative AI models in production.

Freemium· Open-source core free; enterprise pricing on requestmodel-servinginference-pipelines

Sematic

Agents
7.3

Open-source Python-first orchestrator for ML training pipelines from laptop to cloud.

Freemium· Open-source free; managed/enterprise tier on requestml-pipelinestraining-orchestration

Valohai

Agents · Multi-model
7.3

MLOps platform for versioned pipelines, distributed training, and LLM evaluation across any cloud.

Enterprise· Free trial; contact sales for pricingmlopsllm-evaluation

World Monitor

Agents · Multi-model (Claude, GPT via MCP)
7.3

Real-time global intelligence dashboard fusing 56 map layers, 500+ news feeds, and an AI analyst into one situational-awareness console.

Freemium· Free dashboard (no signup); Pro $39.99/mo or $399.99/yrgeopolitical-monitoringsupply-chain-risk

AI-Flow

Agents · Multi-model (OpenAI, Anthropic, Google, Replicate, xAI)
7.2

Visual node-based builder for chaining OpenAI, Anthropic, Replicate and other model APIs into content pipelines.

Freemium· Free tier: 25 welcome credits + 20 BYOK runs/day; paid plans for extended storageworkflow-automationcontent-pipelines

AgentMail

Agents
7.2

API-first email provider purpose-built for autonomous AI agents.

Freemium· Free (3 inboxes); Developer $20/mo; Startup $200/mo; Enterprise customagent-emailinbox-provisioning

Agno (formerly Phidata)

Agents · Multi-model
7.2

Open-source Python framework for building multi-agent systems, paired with a production runtime that ships in your own cloud.

Freemium· Framework free/OSS; AgentOS paid (see pricing page)

Cald.AI

Agents · Multi-model
7.2

Voice AI agents that run inbound and outbound phone calls with sub-second latency.

Freemium· 100 free minutes; volume pricing at 10k min/mo; enterprise customoutbound-callsinbound-support

Chainlit

Agents · Multi-model
7.2

Open-source Python framework for building production-grade conversational AI interfaces in minutes.

Free· Open-source (Apache 2.0); optional paid Literal AI observability tierchatbot-uiagent-frontend

Cherry Studio

Agents · Multi-model
7.2

Open-source desktop AI client that wires 300+ LLMs into one chat, knowledge-base, and agent workspace.

Free· Free and open source; bring your own API keysmulti-model chatlocal knowledge base

Coze Studio

Agents · Multi-model
7.2

Self-hostable visual AI agent development platform from ByteDance with workflows, RAG, and plugin tooling.

Free· Free, Apache 2.0; self-hostedai-agentsworkflow-automation

DeerFlow

Agents · Multi-model (Doubao, DeepSeek, OpenAI, Gemini)
7.2

Open-source multi-agent framework from ByteDance for long-running research, coding, and content tasks.

Free· Free, MIT-licensed (self-hosted; you pay only for LLM tokens)deep-researchautonomous-coding

Domino Data Lab

Agents · Multi-model
7.2

Enterprise AI platform for building, deploying, and governing models and agents at scale.

Enterprise· Contact sales; enterprise contracts onlyenterprise mlopsagentic ai