Best Free AI Agent tools

Abralo is a native desktop app for running multiple Claude Code agents simultaneously with a clean interface, token monitoring, and walk-away control.

Open Science is an open-source, model-agnostic AI workbench for scientific discovery with a coordinator agent, specialist sub-agents, and a reviewer, self-hosted for reproducibility.

Ogment is an AI coworker that lives in Slack, proactively automating repetitive tasks and workflows for your team.

Badge uses AI agents to collect anonymous peer reviews and build a Trust Score that helps professionals get hired faster with verified proof of work.

Deterministic context folding engine for long-running AI agent sessions. Reduces costs by keeping provider prompt caches hot and avoiding LLM summarization calls.

An open, deterministic evidence layer for enterprise AI agents that grounds every claim in traceable source records and gates actions behind approval.

AI search infrastructure designed for agents, delivering structured, secure, and high-quality data with smart intent routing.

Tamper-evident runtime records for AI agents: hash-chained audit trail that vendors cannot edit.

CLI for AI agents to read, edit, and comment on .docx files with full format fidelity.

Open-source AI coworker for desktop that indexes your work into a living knowledge graph and provides built-in surfaces for email, meetings, browsing, and coding.

Abralo is a native desktop app for running multiple Claude Code agents simultaneously with a clean interface, token monitoring, and walk-away control.

Open Science is an open-source, model-agnostic AI workbench for scientific discovery with a coordinator agent, specialist sub-agents, and a reviewer, self-hosted for reproducibility.

Ogment is an AI coworker that lives in Slack, proactively automating repetitive tasks and workflows for your team.

ElevenAgents.ai is an AI platform offering agent-based solutions for task automation and productivity, though full details are currently unavailable.

Badge uses AI agents to collect anonymous peer reviews and build a Trust Score that helps professionals get hired faster with verified proof of work.

Deterministic context folding engine for long-running AI agent sessions. Reduces costs by keeping provider prompt caches hot and avoiding LLM summarization calls.

An open, deterministic evidence layer for enterprise AI agents that grounds every claim in traceable source records and gates actions behind approval.

AI search infrastructure designed for agents, delivering structured, secure, and high-quality data with smart intent routing.

Tamper-evident runtime records for AI agents: hash-chained audit trail that vendors cannot edit.

CLI for AI agents to read, edit, and comment on .docx files with full format fidelity.

Open-source AI coworker for desktop that indexes your work into a living knowledge graph and provides built-in surfaces for email, meetings, browsing, and coding.

Deploy and customize AI-powered voice and chat agents to automate customer support, sales, and operations across multiple channels.

Feyn lets you build and own custom AI models trained on your own data, turning expertise into a specialist that continuously improves.

CircleChat is a team chat platform where AI agents act as teammates to plan, execute, and verify tasks with human approval on risky actions.

TryCase gives your coding agent a disposable Linux desktop to run your app, test it like a user, and send back proof: screenshots, recordings, and logs.

DocsAlot turns scattered product knowledge into polished, agent-readable documentation and AI visibility audits for onboarding.

WorkBuddy is an AI agent that automates office tasks such as deep research, report generation, data analysis, and document creation using natural language instructions.

A Swift framework for building stateful, multi-agent AI workflows with type-safe tools, crash resilience, and native concurrency.

A self-hosted, framework-agnostic runtime for autonomous agents that records and replays every step for debugging and improvement.

Open-source security layer for AI agents enforcing RBAC, human approvals, and signed audit logs.

Terminai wraps your terminal to provide on-demand access to AI agents with read and approval-gated write access.

Macro combines email, chat, docs, tasks, calls, and CRM into one open-source app with shared AI memory.

Proactive AI revenue agent that works in Slack/Teams to detect stalled deals, draft emails, and manage CRM.

Banger Mail is a macOS-native email client that unifies multiple mailboxes, enables team collaboration through shared inboxes, and uses AI agents that draft and triage emails under human review.

A platform for building and running durable AI agents with managed sessions, event logging, and automatic crash recovery.

Run any LLM locally on your Mac faster than LM Studio or Ollama, with chat, coding agents, images, video, and voice, all fully offline and open source.

Mirrors turns your production traces into an isolated copy of your agent's environment so you can test changes safely.

An open-source CLI for fast local search across your past coding agent sessions.

Valmis is an open-source AI agent platform for automating business workflows securely, with isolated containers, proxy API access, and multi-step automation.

AI-native email deliverability service combining AI agents and human experts to monitor, audit, and improve inbox placement with daily monitoring and weekly reporting.

Sequence is the financial execution layer for AI agents, enabling them to send, split, and route real money across bank accounts, cards, apps, and loans via a single API.

N71 gives all your AI agents one shared context by maintaining a living knowledge graph connected to your tools, so every agent stays current without re-explaining.

Extract web data and automate browsers via a single API call, no scraper required.

Behavioral infrastructure for humanlike AI agents, providing APIs and models for social intelligence in group interactions.

Acti is an agentic keyboard for mobile that understands your intent and delivers results, links, or actions without leaving the conversation.

Pluno AI is an AI support agent that learns from past tickets to resolve complex B2B technical issues, integrating with Zendesk.

A unified Python library that combines MCP servers, agent skills, custom functions, and HTTP endpoints into a single tool set for building AI agents with any LLM.

Local-first memory for AI coding agents. Automatically stores and recalls project context via MCP, offline, with ~35ms recall.

A CLI tool that checks package versions for known vulnerabilities across npm, PyPI, and many other ecosystems, designed for AI agents to avoid using outdated packages.

Moxie is an open-source money agent that finds zombie subscriptions, duplicate charges, and missed refunds, then drafts fixes with your consent and logs every step in a tamper-evident audit trail.

Kage is a git-native verification layer for coding agent memory that checks every claim against your code to prevent hallucinations and stale facts.

Clusy is an agent-native notebook that lets you fine-tune LoRA models by simply describing what you want, automating data sourcing, architecture selection, and execution.

AI-powered platform to build custom news trackers that filter noise and deliver insights on any topic.

Folio is an AI agent that generates and edits PowerPoint and Google Slides presentations, tailored for consulting and strategy teams.

Real-time event monitoring infrastructure for AI agents that delivers low-latency data streams and webhook notifications to trigger automated workflows.

Fleet is a local-first web console for creating, configuring, monitoring, and operating Dockerized Hermes AI agents across trusted machines.

Keeps your Mac awake only while AI coding agents are actively working, and lets it sleep when they finish.

Open-source reliability testing harness for AI agent skills, computing pass@k scores across Claude Code, Codex, and Pi backends.

Open-source alternative to Claude in Slack: self-hosted AI agent that reads threads, answers questions, calls tools, and renders rich results.

Build and deploy production-ready multimodal voice AI agents for sales coaching, interview practice, and leadership training.

Abralo is a native desktop app for running multiple Claude Code agents simultaneously with a clean interface, token monitoring, and walk-away control.

Open Science is an open-source, model-agnostic AI workbench for scientific discovery with a coordinator agent, specialist sub-agents, and a reviewer, self-hosted for reproducibility.

Ogment is an AI coworker that lives in Slack, proactively automating repetitive tasks and workflows for your team.