App builders AI agent tools
16 app builders tools in the AgentScout directory, each with a link-checked listing.
Updated
There are 16 app builders tools: 5 open source, 1 source-available, 9 free or freemium, 1 paid, usage-based or enterprise.
Quick comparison Top 10 of 16 listed below. Pricing as the maker states it; blank means we don't have it.
| Tool | Pricing | Best for | Open source |
|---|---|---|---|
 Puter AI Builder | Open source + cloud | Build apps without code | Yes |
 Onlook | Open source | Build apps without code | Yes |
 Fragments | Open source | Write code | Yes |
 a0.dev | Paid | Automate workflows | |
 Alloy | Freemium | ||
 Base44 | Freemium | ||
 Emergent | Freemium | Write code | |
 Rork | Freemium | Automate workflows | |
 Leap | Freemium | Write code | |
 Replit Agent | Freemium | Automate the browser |
Tasks in this category
Showing 16 of 16 tools
Puter AI Builder
Puter AI Builder turns a plain-language description into a working app or website that can be published to a real URL, with no code; it is an open-source alternative to Lovable, Replit and v0 from the team behind Puter.
Added
Onlook
An open-source visual editor for React and Tailwind apps where you design on a canvas and an AI agent writes the code. Edit layouts like in Figma, then export clean code to your own repo.
Added
Fragments
E2B's open-source Next.js template for AI-generated apps, like Claude Artifacts or v0, with generated code run in secure E2B sandboxes.
Added
a0.dev
AI app builder for iOS and Android that generates production mobile apps and ships them to the App Store and Google Play.
Added
Alloy
AI prototyping tool for product managers that clones your product so you can make changes and share high-fidelity prototypes.
Added
Base44
AI app builder that turns a plain-language idea into a working web app with database, login and hosting included.
Added
Emergent
Vibe-coding platform where AI agents plan, build and deploy full web and mobile apps through a chat conversation.
Added
Rork
AI builder for native iOS, Android and web apps that takes you from a prompt to App Store and Google Play publishing.
Added
Leap
AI developer agent that builds full-stack apps and deploys them to your own AWS or GCP account, so you keep the code.
Added
Replit Agent
Builds and deploys full apps from a prompt in the browser.
Added
Bolt
Prompt-to-app builder that runs full-stack apps in the browser.
Added
v0
Vercel's agent that generates and deploys web apps and UI.
Added
Momen
No-code full-stack app builder with AI agent features.
Added
NocoBase
Open-source no-code platform with AI employees for building business systems.
Added
InsForge
Open-source backend platform that gives coding agents a database, auth and storage.
Added
VibeSDK
Cloudflare's open-source kit for running your own vibe-coding platform.
Added
Top app builders repos on GitHub (6)
| Repo | GitHub stars | Licence | Last push |
|---|---|---|---|
| Onlook ↗ | 26,963 | — | 2026-07-22 |
| NocoBase ↗ | 24,599 | NocoBase License Agreement | 2026-10-21 |
| InsForge ↗ | 13,129 | Apache License 2.0 | 2026-10-20 |
| Fragments ↗ | 6,393 | Apache License 2.0 | 2026-10-13 |
| VibeSDK ↗ | 5,409 | MIT | 2026-09-07 |
| Puter AI Builder ↗ | 291 | — | 2026-10-20 |
6 repos. Stars and licence come from each repo, checked when the listing was last verified.
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Facts come from our directory listings; pricing is as each maker states it. Check official sites before you choose.