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Build & Ship · Vibe Coding & App Builders

AI Coding Agents

9 paid against 20 free you can run yourself.

Paid against free › Build & Ship › Vibe Coding & App Builders › AI Coding Agents · Coding agents and dev tools on Repo Radar

AI coding agents read your codebase, edit files across it, run commands and tests, and increasingly work in the background or in the cloud. The paid tools differ mainly in where the agent lives (an editor such as Cursor and Kiro, the terminal such as Claude Code and Warp, or cloud agents such as Devin and Factory) and in how usage is billed: bundled quotas, credits, or pass-through API rates with your own keys (Amp, Warp). The open-source side is led by terminal agents (Codex CLI, OpenCode, Crush, Goose) and editor agents (Cline, Kilo Code), plus OpenHands for self-hosted agent fleets. Marks come from vendor pricing and product pages and project READMEs as of 18 October 2026; nothing was tested hands-on.

Paid 9 reviewed · 9 related

Prices and free tiers as checked, dated on each review.

RREA

REA lets coding agents reverse engineer apps, binaries, and browser behavior.

—CClaude Code

Anthropic's agentic coding tool for developers in terminal and IDE.

$17OOpenAI Codex

AI coding agent for engineering tasks across ChatGPT, editor, and terminal.

$8free tierGGitHub Copilot

AI coding agent integrated into GitHub for code completion, chat, and automation.

free tierDDevin

Autonomous AI software engineer that plans, codes, and ships pull requests.

$20free tierAAugment Code

Agentic software development platform for enterprise-scale engineering teams.

$20FFactory

Agent-native software development platform for autonomous engineering workflows.

$20AAmp

Amp is a coding agent and development environment built for the frontier.

$20free tierWWarp

Warp is an agentic development platform for building and running software factories.

$20free tier

Related paid tools

Their home is another job; they cover part of this one too.

CCursor

AI coding agent for building ambitious software.

$8free tierKKiro

Agentic development environment for building software with AI agents.

free tierLLovable

AI-powered platform to build full-stack apps from natural language.

free tierBBolt

AI-powered platform to build, deploy, and manage web apps and websites from natural language.

free tierMMistral Vibe

AI chat assistant and agent for work and code.

$14.99free tierQQoder

Agentic coding platform with IDE, JetBrains plugin, CLI, and mobile control.

$20free tierJJetBrains Air

JetBrains Air is a system for building software with AI agents.

free tierPPearAI

Open source AI code editor with chat, agent, and no-code creation.

$15free tierZZ.AI Developer Platform

Z.AI offers GLM model APIs and agent tools for coding and office automation.

free tier

Free 20 direct · 24 related

Free to use. You run it on your own server.

Direct alternatives

They do this job.

ECaffaan-m/ECC

A bundle of agents, skills, rules and memory files that you install into a coding assistant.

★ 282kFreeOPanomalyco/opencode

A coding assistant that runs in a terminal and edits the files in the folder you start it in.

★ 213kFreePODietrichGebert/ponytail

A plugin that makes a coding assistant look for the existing answer before writing a new one.

★ 166kFreeSPgithub/spec-kit

A toolkit of commands and templates that turn an intent into a written specification, a plan and a task list an assistant can implement.

★ 141kFreeCOopenai/codex

A terminal coding assistant that reads a project, writes the changes and runs the commands to check them.

★ 129kFreeOPOpenHands/OpenHands

A self-hosted control screen that runs several coding assistants and shows what each one is doing.

★ 90.8kFreeRUruvnet/ruflo

🌊 The original agent harness. Deploy intelligent multi-player swarms, coordinate autonomous workflows, and build conversational AI systems. Features adaptive memory, self-learning intelligence, federation, vector RAG integration, and native Claude Code / Codex / Hermes and many more Integrated

★ 75.6kFreeCLcline/cline

A coding agent that runs inside VS Code or a JetBrains editor, and also as a terminal command.

★ 70.3kFreeOPopeninterpreter/openinterpreter

A coding agent for open models like Kimi K3 and GLM 5.3

★ 68.6kFreeI-ayghri/i-have-adhd

A set of instructions that makes a coding assistant put the answer first.

★ 57.5kFreeDIcathrynlavery/diagram-design

An agent skill that makes a coding assistant produce one self-contained HTML and SVG diagram.

★ 56.5kFreeGOaaif-goose/goose

An AI agent that installs, runs, edits and tests on the machine in front of it, rather than printing suggestions.

★ 55.3kFreeAIAider-AI/aider

A coding assistant that works in a terminal and commits each change to git.

★ 49.6kFreeAGwshobson/agents

A marketplace of ready-made Claude Code plugins, subagents and skills — a free capability upgrade to how he builds everything else.

★ 40.4kFreeTATabbyML/tabby

A coding assistant that runs the model on a machine the team controls.

★ 33.9kFreeCRcharmbracelet/crush

A terminal program that drives an AI model over the code in the current folder.

★ 28.6kFreeBOstackblitz-labs/bolt.diy

Turns a written description into a running web application in the browser, with any of more than 22 model providers.

★ 20kFreeZOZoo-Code-Org/Zoo-Code

An editor assistant with several agent modes, continuing a much larger project that was shut down in May 2026.

★ 2kFreeAGcoder/agentapi

One HTTP interface in front of eleven terminal coding assistants.

★ 1.5kFreeCCkbwo/ccmanager

Runs several coding assistants at the same time, each in its own copy of the project.

★ 1.3kFree

Related alternatives

A second choice: they cover part of this job or are a building block for it.

BRbrowser-use/browser-use

Open-source Python library for AI browser agents, plus Browser Use Cloud: stealth browsers and a hosted agent API.

★ 119kFreeREmorluto/rea

Reverse engineer anything with agents, from app behavior down to native binaries.

★ 117kFreeOPnexu-io/open-design

The 1st Collaborative AI Design Agent Workspace. Local-first and open source. Create motion, prototypes, websites, apps, dashboards, presentations, images, and videos with your team and AI agents. Share work, exchange feedback, and iterate together in one workspace.

★ 103kFreeOPalibaba/open-code-review

A command that reviews recent code changes and leaves comments on single lines.

★ 47.5kFreePRlinshenkx/prompt-optimizer

An AI prompt optimizer for writing better prompts and getting better AI results.

★ 38.6kFreeOPfirecrawl/open-lovable

🔥 Clone and recreate any website as a modern React app in seconds

★ 28.7kFreeONonlook-dev/onlook

A visual editor for React and Tailwind projects that writes every change back into the source files.

★ 26.9kFreeDYdyad-sh/dyad

A desktop program that builds a web application from a written description, running locally with keys the user supplies.

★ 21.9kFreeTEcrynta/terax-ai

Lightweight (7MB) terminal-first AI-native development environment

★ 9.3kFreeSTsteel-dev/steel-browser

🔥 Open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web without worrying about infrastructure.

★ 7.8kFreeCOmufeedvh/code2prompt

Turns a folder of code into one prompt, with a file tree and a token count.

★ 7.7kFreeLLNutlope/llamacoder

Open source Claude Artifacts – built with Llama 3.1 405B

★ 7.1kFreeFRe2b-dev/fragments

Open-source Next.js template for building apps that are fully generated by AI. By E2B.

★ 6.4kFreeVIcloudflare/vibesdk

An open platform for running an application-building service, built end to end on one company's infrastructure.

★ 5.4kFreeLAlatitude-dev/latitude-llm

Open-source observability for AI agents. Find where your agents fail, dispatch your coding agent to fix it, and verify the fix against real traces.

★ 4.7kFreeCHget-convex/chef

The only AI app builder that knows backend

★ 4.6kFreeCHconvex/chef

The only AI app builder that knows backend

★ 4.6kFreeCOopensumi/core

A framework helps you quickly build AI Native IDE products. MCP Client, supports Model Context Protocol (MCP) tools via MCP server.

★ 3.7kFreeADfreestyle-sh/Adorable

Open Source Lovable

★ 827FreeILtmchow/illo-skill

illo skill — an AI agent skill that turns ideas and articles into original print-style editorial illustrations, starring a recurring mascot. 30+ characters packs, with ability to create your own.

★ 408FreeOIoil-oil/oil-icon

AI icon set generator skill for Claude Code & Codex. 帮你生成整套风格统一的图标。

★ 310FreeMIJamessdevops/micracode

Open Source Alternative to Lovable, v0, Bolt, Replit, Emergent. 🌟 Star if you like it!

★ 297FreeQWBomx/qwoted-seo-backlinks-skill

Claude Code skill: find PR/backlink opportunities on Qwoted, build a sourced statistics page as a linkable asset, and pitch journalists — all from your AI agent.

★ 148FreeNAme-shaon/naming-scout

Names your startup, product or side project, then proves you can actually use it. Checks the domain registry, trademark, GitHub, npm, app stores and search. An agent skill for Claude Code, Cursor, Codex and 75 other agents.

★ 24Free

Feature by feature

Every paid tool and free repository we compared, marked against the same features.

✓has itPartlysome plans or extra work—confirmed not available?not confirmed✓the vendor's claim onlypricingClick a mark for its note and source

Paid · 8Free · 10
Featureopenai/codexanomalyco/opencodecline/clinegoogle-gemini/gemini-cliOpenHands/OpenHandsaaif-goose/goosecharmbracelet/crushAider-AI/aideropeninterpreter/openinterpreterKilo-Org/kilocode
Starts at$17 per month billed annually ($200 up front); $20 billed monthly (Pro)$8 per month (ChatGPT Go, limited Codex), billed monthly$10 per user per month (Pro)$20 per month (Pro)$20 per month flat, up to 50 seats, $20 of usage included (Standard)$20 per month (Pro)$20 per month (Megawatt)$18 per month billed annually; $20 billed monthly (Build)Apache-2.0MITApache-2.0Apache-2.0MITApache-2.0Functional Source License 1.1Apache-2.0Apache-2.0MIT
Surfaces
Terminal agentRuns as a command-line agent in your terminal.
IDE or editor integrationWorks inside an editor such as VS Code or JetBrains, or is itself the editor.
Desktop appA standalone desktop application for running and supervising agents.
Execution
Cloud or background agentsAgents keep working on remote machines while your laptop is closed.
Models
Models from several vendorsChoose models from more than one AI company in the same tool.
Own API keys or subscriptionsUse your own provider API keys or existing AI subscriptions instead of bundled usage.
Local or open-weight modelsRun with local models (for example through Ollama) or open-weight models.
Extensibility
MCP toolsConnect Model Context Protocol servers as tools.
Workflow
AI code reviewReviews pull requests or diffs and reports findings.
Execution
Parallel agents or subagentsRun several agents at once or delegate to subagents.
Extensibility
Skills, rules or AGENTS.mdReusable instructions, skills or project rules files the agent follows.
Safety
Approval and permission controlsAsk before running commands or writing files; permission modes or sandboxes.
Extensibility
SDK or headless APIDrive the agent from code, scripts or CI without the interactive interface.
Teams
Team admin and SSOShared billing, admin controls or single sign-on for organisations.
Deployment
Self-hosting or own infrastructureRun the agent or its cloud runners on your own servers.
Pricing
Extra usage at API ratesBuy usage beyond the plan allowance at pay-as-you-go or API rates.

Excluded candidates

Looked at, and left out of the comparison, with the reason.

Paid apps

  • ReplitReplit describes itself as an AI app and website builder that produces a working app without coding. It belongs with app builders rather than with agents that work inside an existing codebase.Source
  • WindsurfWindsurf's pricing address now redirects to Devin's plans, where the editor continues as Devin Desktop. It is covered through Devin (P5) rather than listed twice.Source
  • Google JulesJules is Google's autonomous coding agent, sold inside Google AI Pro and Ultra subscriptions with higher limits rather than as its own plan, so it cannot be priced alongside the dedicated tools.Source
  • JetBrains JunieJunie is JetBrains' AI coding agent for its IDEs. It covers the same in-editor agent workflow as GitHub Copilot, Cline and Kilo Code, which work across more editors, so it ranked below them.Source
  • TabnineThe Tabnine website and pricing address now redirect to Tricentis pages (a product list and a contact form), so there is no self-serve plan to compare with the selected tools.Source
  • QoderQoder is an AI coding IDE with completion and conversational programming that also plugs into VS Code and JetBrains. It overlaps Cursor and Kiro and ranked below them for this comparison.Source

Repositories

  • RooCodeInc/Roo-CodeRoo Code was an AI agent team for the code editor. The repository is archived, with its last push on 15 May 2026, so it is not a supported choice today.Source
  • TabbyML/tabbyTabby is a self-hosted AI coding assistant server for code completion and chat rather than an autonomous agent, and it has had no push since 30 June 2026.Source
  • coder/agentapiAgentAPI is an HTTP API wrapper for other agents such as Claude Code, Goose, Aider and Codex, not an agent itself, and the repository is archived.Source
  • stackblitz-labs/bolt.diybolt.diy prompts, runs and deploys full-stack web apps in the browser with any model. It is an app builder, compared better with Lovable-style tools than with coding agents.Source
  • DietrichGebert/ponytailPonytail is an add-on that changes how an existing AI agent thinks about code ("think like the laziest senior dev"). It needs one of the selected agents to run, so it is not an alternative to them.Source
  • affaan-m/ECCECC is a performance system of skills, instincts and memory layered on top of an agent harness. It extends the selected agents rather than replacing them.Source
  • continuedev/continueContinue was an open coding agent for VS Code, JetBrains and the CLI. Its README says the repository is no longer actively maintained and is read-only after a final 2.0.0 release.Source
  • plandex-ai/plandexPlandex is a terminal coding agent for large projects, but the repository has had no push since 3 October 2025, so it is behind the actively developed agents selected here.Source
  • SWE-agent/SWE-agentSWE-agent takes a GitHub issue and tries to fix it automatically with a chosen model. It is a research tool, and OpenHands (G5) covers the same work as a maintained product.Source
  • anthropics/claude-codeThe repository has no licence that GitHub can identify and belongs to the vendor of the commercial Claude Code, which is compared as a paid tool (P2).Source
  • QwenLM/qwen-codeQwen's open terminal coding agent covers the same terminal workflow as Gemini CLI, Codex and OpenCode, which have larger communities, so it ranked below them.Source
  • esengine/DeepSeek-ReasonixA coding agent for complex engineering tasks built around DeepSeek models. It overlaps Open Interpreter and OpenCode for low-cost models and ranked below them.Source
  • 1jehuang/jcodejcode is a high-performance coding agent harness written in Rust. It covers the same terminal workflow as OpenCode and Crush with a much smaller community, so it ranked below them.Source
  • can1357/oh-my-pioh-my-pi is a coding agent with an IDE wired in from Stencil Labs. It overlaps Cline and Kilo Code, which support more editors, so it ranked below them.Source
  • codewhale-hq/CodewhaleCodewhale is an open Rust agent engine and terminal client for the Codewhale service. It ties the open client to one vendor service, so the vendor-neutral agents were preferred.Source

Gaps

What the research could not settle from the vendors' own pages.

What vendors don't publish

  • Most vendors describe higher plans as multiples ("4x Plus", "about 5x Pro", "significantly higher quotas") without saying how many agent tasks or tokens a plan covers, which makes plans hard to compare.Claude Code, OpenAI Codex, Devin, Factory · checked 2026-10-18 · source 1 · source 2 · source 3 · source 4

Where vendor pages disagree

  • The old Windsurf pricing address now redirects to Devin, and Windsurf no longer publishes plans of its own. Existing Windsurf users have to read Devin's plans to see what they will pay.Devin · checked 2026-10-18 · source 1 · source 2
  • Gemini CLI's README says unpaid and Google One users were moved to Antigravity CLI on 18 June 2026, while the repository keeps shipping releases. Who should still use it is unclear from the README alone.google-gemini/gemini-cli · checked 2026-10-18 · source 1

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