Best Free AI Agent tools

Multi-agent workflow platform that builds and runs workflows from plain English prompts, integrating 1000+ apps and 50+ AI models.

A collection of deliberately vulnerable MCP servers for training in agentic security, mapped to the OWASP Top 10 for Agentic Applications.

Open-source AI tool for deep infrastructure research, running frontier models across code, cloud, and runtime to deliver verified answers.

Terminal UI to manage AI coding-agent sessions (Claude Code, OpenCode, Codex, Grok Build) in tmux with live status, group tree, and diff review.

Self-hostable sandbox SDK for AI agents that provides isolated environments with key management and egress control on your own hardware.

Open-source desktop app to manage multiple project workspaces simultaneously, keeping terminals and AI coding agents running across projects with instant switching.

A macOS menu-bar app that gives AI agents the ability to draw directly on your screen via MCP.

A desktop app that transforms AI coding agents into a visual Kanban build loop for feature development with human review.

Automate repetitive browser tasks by recording screen actions or describing with chat, turning them into reusable workflows, smart tables, and custom apps.

SureWire is a specialized QA platform that stress-tests AI agents for safety, reliability, and compliance using purpose-built testing agents.

Multi-agent workflow platform that builds and runs workflows from plain English prompts, integrating 1000+ apps and 50+ AI models.

A collection of deliberately vulnerable MCP servers for training in agentic security, mapped to the OWASP Top 10 for Agentic Applications.

Open-source AI tool for deep infrastructure research, running frontier models across code, cloud, and runtime to deliver verified answers.

Terminal UI to manage AI coding-agent sessions (Claude Code, OpenCode, Codex, Grok Build) in tmux with live status, group tree, and diff review.

Self-hostable sandbox SDK for AI agents that provides isolated environments with key management and egress control on your own hardware.

Open-source desktop app to manage multiple project workspaces simultaneously, keeping terminals and AI coding agents running across projects with instant switching.

A macOS menu-bar app that gives AI agents the ability to draw directly on your screen via MCP.

A desktop app that transforms AI coding agents into a visual Kanban build loop for feature development with human review.

Automate repetitive browser tasks by recording screen actions or describing with chat, turning them into reusable workflows, smart tables, and custom apps.

SureWire is a specialized QA platform that stress-tests AI agents for safety, reliability, and compliance using purpose-built testing agents.

Authorization for AI agents that binds human approval to exact payloads before execution.

Hubo is an AI code review tool that uses two sparring agents to reconcile every finding before presenting results to the developer.

Browser infrastructure platform for AI agents to run on the internet at speed with cloud browser sessions, agents, and serverless functions.

runevr is an AI-powered workspace for creative teams that combines boards, media review, chat, calls, and AI agents into one platform.

A local-first terminal coding agent that orchestrates specialized sub-agents for wide coding tasks, supporting parallel workflows, model routing, and web search.

The easiest way to build and deploy autonomous AI agents for any task, with no code required.

CartAI provides an API and MCP server to deploy AI agents that autonomously navigate web properties and complete transactions like checkout, subscriptions, and invoice payments.

Stele provides shared memory for AI coding agents, recording decisions, tasks, and lessons to maintain context across tools and sessions.

Runtime control for production AI agents to stop them before they send, spend, or execute, with open-source policy enforcement.

Unified AI execution layer for enterprises to route, govern, validate, and audit AI agents from pilot to production with enterprise security.

An open-source AI agent video editor that lets you describe the cut and the agent edits the timeline with captions, music, transitions, and more.

Manifest converts any URL into a structured JSON map of what AI agents can interact with on a page—buttons, forms, inputs, and required fields.

A governed AI agent platform that allows anyone to build agents while ensuring human approval and full audit trails for every action.

Skippr is a live AI employee that embeds into your product, meetings, and internal tools to drive demos, onboarding, support, and team enablement.

SHACKLE is a runtime governance layer and conformance standard for autonomous AI agents, enforcing guardrails, budget/loop limits, and policy constraints in real time.

An independent, curated index and search engine for AI agents, MCP servers, frameworks, and infrastructure tools, ranked by maintained adoption.

Rewisp is an on-device ambient memory for Mac that captures text from your screen and lets you ask anything about your past activity, automatically surfacing promises, changes, and summaries while keeping everything private.

Backtest crypto trading strategies by describing them in plain English, directly from Claude, ChatGPT, or any AI agent.

Open-source platform for real-time AI agent security, auditing skills and runtime with community-driven threat rules.

SureWire Beta is an AI agent validation platform that helps ensure your AI agents are safe and reliable through comprehensive testing.

Run multiple AI coding agents in parallel on isolated git worktrees with a full editor and built-in developer tools.

An open-source cost controller for AI agent loops that stops loops when converged and rolls back before degradation.

Open-source tool running specialized AI agents to review code, sync docs, perform deep QA testing, and distill repository knowledge on a schedule.

Open-source CLI, debug agents, and browser tools for building and maintaining reliable web integrations.

Local-first AI operator that controls your Windows PC, files, shell, apps, browser, and desktop, with voice and memory, all on your machine.

The fastest way for an AI agent to raise capital on-chain by issuing bonds, with no account, no middleman, and no platform fees.

Wolbarg is a local-first TypeScript SDK providing shared semantic memory for AI agents using SQLite or PostgreSQL.

An AI personal assistant that works across your desktop, files, apps, and workflow, keeping your data local and private.

Graft AI gives AI agents a reliable way to use legacy software by turning real interfaces into stable tools.

Autonomous AI testing agent that crawls your web app, maps behavior, and surfaces regressions without scripts or maintenance.

An open-source Python framework for building agentic AI applications with server-driven UI, native observability, sandboxing, and pluggable model orchestration.

An open-source QA agent that reads codebases, derives business flows, and runs end-to-end tests across frontend and backend.

Open-source context engineering layer for AI agents that reduces token usage by ~80% and improves accuracy by selectively providing relevant tools and skills.

Deploy autonomous AI employees from a single prompt to work 24/7 across any role.

Kit for AI provides persistent memory and document conversion for AI agents via MCP and REST, enabling agents to remember, search, and cite knowledge from any file or URL.

SonOf is an agentic engineering service that ships production code into your existing product—connect your repo, get a free audit, approve tickets, and pay only when code ships.

Nous centralizes the data scattered across your GTM tools into one context graph, resolving every person and company into a single record your agents read in one call.

IQVigilant is an AI-native dynamic engine for building enterprise-grade applications with deterministic AI agents, natural language querying, and no-code page building.

Infrastructure for AI agents to connect, communicate, and earn — with outbound-only, real-time streaming, and built-in billing.

Agentcard provides agent-friendly card issuing and payment infrastructure for AI agents, enabling 5-minute setup and autonomous purchases.

Multi-agent workflow platform that builds and runs workflows from plain English prompts, integrating 1000+ apps and 50+ AI models.

A collection of deliberately vulnerable MCP servers for training in agentic security, mapped to the OWASP Top 10 for Agentic Applications.

Open-source AI tool for deep infrastructure research, running frontier models across code, cloud, and runtime to deliver verified answers.