Free tier only
Free Alternatives to Harness² (2026)
Harness² has a free tier, but if it does not fit, Here are 9 AI Agents & Automation tools you can start using for free, ranked by how closely they match Harness², with what each charges once you outgrow the free plan.
Closest free matches
Ranked by shared use cases, audience and stack with Harness². Every tool here lists a free plan.
Craft Agents is an open-source (Apache 2.0) desktop app from the makers of Craft Docs for working with AI agents. It connects agents to MCP servers, REST APIs, local files and a built-in browser, with multi-session workspaces, Skills, Automations and Pages.
shim-cli is a free, Apache-2.0 command-line tool that hooks into Claude Code, Codex, Copilot CLI and VS Code to find secrets and personal data in what an agent sends, mask it where the client allows, and report session tokens and cost.
Harness is Autonomous' open-source (MIT) command center for coding agents: run Claude Code, Codex, Cursor, OpenCode and more side by side across your machines, with end-to-end encrypted remote terminals.
Composio connects AI assistants and custom agents to more than 1,500 apps through managed authentication, SDKs and an MCP gateway, and its new Instant tools let agents pay per call for search, scraping, audio and data services from one balance.
Pomerado builds deterministic MCP and API integrations for websites without an API, including sites behind logins and 2FA, so agents call a tool instead of driving a browser. Open-source core (MIT) plus a hosted cloud.
ReefAPI is one gateway to 250+ live web-data APIs: e-commerce, social, real estate, jobs, travel, news, finance and company data. Clean JSON, free tier.
OpenCode is an MIT-licensed AI coding agent that runs in the terminal, as a desktop app or in an IDE, and works with 75+ model providers, local models and existing Copilot or ChatGPT subscriptions.
Ultracite is an open-source, zero-configuration preset for Biome, Oxlint and ESLint. It lints and formats JavaScript and TypeScript code and checks each edit an AI coding agent makes against a strict, shared set of rules.
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Free alternatives to Harness²: FAQ
Quick answers to common questions
Is Harness² free?
Yes, Harness² offers a free tier. The tools below are alternatives that are also free to start.
What is the best free alternative to Harness²?
Craft Agents is the closest free match by shared use cases, audience and stack. shim-cli, Harness by Autonomous and Composio are the next closest.
Which free AI Agents & Automation alternatives have paid upgrades?
Harness by Autonomous (from $149), OpenCode (from $10) and CosVoice (from $29) list paid plans above their free tier. 6 of the tools listed publish no paid price at all.
How were these free alternatives to Harness² chosen?
Tools are ranked by similarity to Harness² (shared use cases, target audience, tech stack and pricing model) and filtered to those whose listing shows a free tier, freemium plan or open-source edition. Where fewer than 2 close matches exist, popular free AI Agents & Automation tools fill the list and are labelled as such.
Building a free AI Agents & Automation tool?
List it free. Tools with a free tier appear on pages like this one.