Free tierCursor
A strong default AI code editor for builders who want an agent in their IDE.
Tool index
All 49 AI tools for builders
Every tool in the directory, grouped by its main category. 38 of 49 list a free tier or open-source option. Pricing checked 2026-11-03 on each vendor's official page; not hands-on testing (methodology).
AI coding tools
How to choose →Free tier
Free tierGitHub Copilot
The low-friction pick if you already use GitHub.
PaidClaude Code
A top choice for terminal-comfortable builders who want an autonomous coding agent.
Free tierDevin (incl. Devin Desktop, formerly Windsurf)
Worth a look if you want to hand off whole tasks to autonomous agents.
Open sourceCline
Best for builders who want an open, model-agnostic agent and control over costs.
Open sourceAider
A lightweight, free terminal option for developers.
Free tierZed
Great if editor speed matters and you want AI built in.
Free tierOpenAI Codex
A strong pick if you already pay for ChatGPT.
PaidFactory (Droid)
Worth a look if you want a terminal or desktop coding agent that is not tied to one model vendor.
Open sourceOpenCode
Best for builders who want a free, open-source coding agent that works with whatever model or subscription they already have.
FreemiumGoogle Antigravity
Best for developers who want Google's free, agent-first coding app, with Google AI plans when they need more usage.
Free tierKiro
Best for developers who want an AI coding agent that plans the work as a spec before it writes code.
AI app building tools
How to choose →
Free tierLovable
One of the easiest ways for non-coders to ship a web app.
Free tierBolt
Good for quick prototypes and MVPs straight from a prompt.
Free tierv0 by Vercel
Best for builders who want polished React UI and deploy on Vercel.
FreemiumReplit
A solid all-in-one for building and hosting apps with an agent.
Free tierBase44
Best for non-developers who want a whole app, with database and login built in, from a chat prompt.
SunsettingFree tierFirebase Studio
Closed to new users and shutting down March 22, 2027; existing users should migrate to Google AI Studio or Antigravity.
Free tierAdalo
Best for non-coders who want a real app in the App Store and Google Play, not just a web app.
AI agents tools
How to choose →
Open sourceLangGraph
A top pick for developers building reliable custom agents.
Free tierCrewAI
Good for prototyping multi-agent teams quickly.
Open sourceOpenAI Agents SDK
A simple, minimal starting point for code-first agents.
Paidn8n
The flexible automation pick for technical builders.
AI design tools
How to choose →
AI research tools
How to choose →
Free tierGemini Notebook (formerly NotebookLM)
Great for researching docs, specs and competitors from your own sources.
AI testing tools
How to choose →
Open sourcePlaywright
The default free E2E testing tool for web apps.
PaidQA Wolf
For teams that want E2E coverage handled for them.
PaidCodeRabbit
A good add-on reviewer for AI-generated code.
Free tierSentry
Add this once real users hit your app.
AI deployment tools
How to choose →
Free tierVercel
The easiest deploy for Next.js and frontend apps.
Free tierNetlify
A reliable alternative to Vercel for static and Jamstack sites.
Free tierSupabase
The go-to backend for AI-built apps.
Free tierRailway
Great for backends and servers that don't fit serverless.
Free tierCloudflare Pages
A cheap, fast option for static and edge apps.
AI assistants
How to choose →
Free tierMuse (Meta)
Best for trying a personal agent for free, with approvals and an audit trail; it is offered in North America, Japan and, since Oct 27, 2026, Singapore.
PaidDots (OpenAI)
Best for ChatGPT Pro users who want always on agents in ChatGPT, Slack and Teams; not offered in the EEA, Switzerland or the UK.
PaidGrok Bot
Best for running several agents that share a cloud computer, tools and files; the weekly pool is shared with Grok and Cursor.
Free tierChatGPT Work (OpenAI)
Best for turning your tools and files into documents, presentations and web apps; the Free plan is desktop only, and usage is shared with Codex.
Free tierClaude (Anthropic)
Best for work on your own files and browser when you want to choose between approving each action and automated checks; local files and the browser need Claude Desktop open.
Free tierManus
Best for trying long tasks on free daily credits; monthly credits reset and go to zero if you cancel.
Free trialLindy
Best for teams that want an assistant in Slack and email that waits for approval on outside actions; every active user is billed.
Free trialMotion
Best for planning your week with calendar scheduling; trials bill unless you cancel.
Free tierAlexa+ (Amazon)
Best for Prime households that want errands like takeout, reservations and rides done by voice; check approvals yourself, since Amazon's pages do not describe them.
PaidClaude Duet (Anthropic)
Best for US Claude Pro, Max or Ultra subscribers who want morning briefs and check-ins; it is a waitlisted research preview that shares your Claude limits.
Free tierComet (Perplexity)
Best for an assistant inside a free browser; agent work in Work mode runs on paid credits.
PaidCopilot Cowork (Microsoft)
Best for Microsoft 365 Premium or Pro subscribers; Personal and Family plans lose access, and it is still a preview.
Free tierGemini (Google)
Best for Google AI Pro or Ultra subscribers who want background tasks with apps like Instacart and OpenTable; not offered in the EEA, Nigeria, Switzerland or the UK.