Free / Open-sourceDescribe your idea in chat and Lovable turns it into a working app or website
Free / Open-sourceDescribe your idea in chat and Lovable turns it into a working app or website
BuilderKit records 4,574 monthly visits with +18.1% month-over-month growth and One-time purchase pricing. MonoKit records 0 monthly visits with 0% growth and Paid pricing.

Harness-as-Code monorepo for shipping agent-built web and mobile products
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | builderkit.ai | monokit.dev |
| Pricing Model | One-time purchase | Paid |
| Monthly Visits | 4.57K (4,574) | 0 (0) |
| MoM Traffic Delta | +702 (+18.1%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (66.9%) | 🌐 Global (—) |
| Direct Visits / mo | 1.79K | 0 |
| User Rating | 4.3 | 4.3 |
| Supported Platforms | Website | Website |

Ship AI SaaS apps fast with a modular Next.js boilerplate
A typesafe TypeScript and Next.js codebase with server-side rendering, clean components, Postgres tables on Supabase and row-level security already configured.
Chat, text generation, image generation, speech-to-text and text-to-speech modules with support for major model providers, so you can pick and swap LLM or media APIs.
Supabase authentication with Google sign-in and magic links, Stripe and Lemon Squeezy checkout, plus Loops or Resend transactional email integrations.
Pre-built marketing pages, waitlist templates, SEO metadata, automated sitemaps and an admin dashboard for managing users, usage and plans.

Harness-as-Code monorepo for shipping agent-built web and mobile products
A versioned `monokit.harness.ts` contract declares app surfaces, shared capabilities, boundaries, agent instructions and the exact commands used to verify changes.
Deployable API (Hono + OpenAPI), web (Next.js), mobile (Expo) and browser extension (Vite) starters share packages instead of duplicating configuration.
Zod contracts connect validation, interactive API docs and typed clients, while transactional state changes add idempotency, audit trails, an outbox and signed webhooks.
Typed tools, permission checks, structured outputs, versioned prompts, deterministic test doubles, evaluations and tracing help you ship AI features that can be tested.
Free / Open-sourceDescribe your idea in chat and Lovable turns it into a working app or website
Free / Open-sourceDescribe your idea in chat and Lovable turns it into a working app or website
Free / Open-sourceGoogle's agent-first development platform for building and shipping software with AI agents
Free / Open-sourceGoogle's agent-first development platform for building and shipping software with AI agents

Free / Open-sourceBuild working apps, websites, and AI agents by describing them
Free / Open-sourceBuild working apps, websites, and AI agents by describing them

Free / Open-sourceDescribe your idea and Replit builds a working app in minutes
Free / Open-sourceDescribe an app in chat and ship it
Free / Open-sourceDescribe an app in chat and ship it
Free / Open-sourceBuild websites and apps by chatting with AI in your browser
Free / Open-sourceBuild websites and apps by chatting with AI in your browser

Free / Open-sourceDescribe the software you need, and Blink builds and hosts it
Free / Open-sourceDescribe the software you need, and Blink builds and hosts it

Free / Open-sourceAI-powered terminal and agentic software factory for development teams
Free / Open-sourceAI-powered terminal and agentic software factory for development teams
Free / Open-sourceReactive TypeScript backend with database, functions and AI gateway
Free / Open-sourceReactive TypeScript backend with database, functions and AI gateway
Free / Open-sourceTurn an idea into a full-stack mobile and web app with agentic AI
Free / Open-sourceTurn an idea into a full-stack mobile and web app with agentic AI

Free / Open-sourceTurn prompts into real React Native and Expo apps, ready for the app stores
Free / Open-sourceTurn prompts into real React Native and Expo apps, ready for the app stores

Free / Open-sourceOpen-source TypeScript framework where agents and UIs share one set of capabilities
Free / Open-sourceOpen-source TypeScript framework where agents and UIs share one set of capabilities