Powerful full-stack app generation from natural language, but offers more polished UI components and smoother deployment flows.
#1Base44 records 14,039,232 monthly visits with +0.5% month-over-month growth and Freemium, Paid, Contact for Pricing pricing. Mastra records 318,954 monthly visits with -5% growth and Freemium, Contact for Pricing pricing.

The TypeScript framework for building, deploying, and observing AI agents
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | base44.com | mastra.ai |
| Pricing Model | Freemium, Paid, Contact for Pricing | Freemium, Contact for Pricing |
| Monthly Visits | 14.04M (14,039,232) | 318.95K (318,954) |
| MoM Traffic Delta |
| +74.64K (+0.5%) |
| -16.74K (-5%) |
| Primary Market & Share | 🇺🇸 United States (32.1%) | 🇺🇸 United States (21.3%) |
|---|
| Direct Visits / mo | 7.82M | 139.22K |
|---|
| User Rating | 4.4 | 4.6 |
|---|
| Supported Platforms | Website | Website |
|---|

Build working apps, websites, and AI agents by describing them
Describe an idea and get a working app with database, authentication, payments, and hosting already wired up — no server or infrastructure setup.
Generates complete websites with layout, copy, and design, plus built-in SEO tools and custom domain support, ready to publish in one click.
Create 24/7 AI agents that connect to your tools, take real actions, manage data, and automate recurring workflows autonomously.
Connects to Google Calendar, Gmail, Slack, Notion, HubSpot, Salesforce, and more, with API access for anything else you use.

The TypeScript framework for building, deploying, and observing AI agents
Define agents with instructions, models, tools, and runtime behavior, then compose typed workflow steps with retries and branching in TypeScript.
Give agents long-lived context with observational memory, semantic recall, and thread-aware storage.
Traces, metrics, logs, and datasets show every model call, tool call, and handoff in a searchable timeline.
Score agent runs against repeatable checks and experiments before changes reach production.
Powerful full-stack app generation from natural language, but offers more polished UI components and smoother deployment flows.
#1
SpecialistAn AI-native code editor offering deeper multi-file control, but demands more developer experience than zero-code platforms.

Provides a robust cloud development environment with agentic coding, but requires more manual coding oversight than pure no-code.
Converts conversational prompts into hosted applications, though with slightly less advanced UI design customizability.
SpecialistA robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors.
Generates full-stack web apps directly in the browser, though sometimes less structured for enterprise backend scaling.

SpecialistA developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps.
SpecialistExcels at generating high-quality front-end user interfaces, but requires additional setup for complete full-stack backend integration.

Instantly builds fully functional web apps with integrated databases and payments, but features fewer advanced customization controls.

Free / Open-sourceA comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript.

SpecialistTransforms spreadsheets into interactive business apps easily, but lacks the raw code generation flexibility of full-stack AI builders.
Turns conversational prompts into published web and mobile apps, but has fewer enterprise-grade scaling templates.
Powerful full-stack app generation from natural language, but offers more polished UI components and smoother deployment flows.
SpecialistAn AI-native code editor offering deeper multi-file control, but demands more developer experience than zero-code platforms.
Provides a robust cloud development environment with agentic coding, but requires more manual coding oversight than pure no-code.
Converts conversational prompts into hosted applications, though with slightly less advanced UI design customizability.
SpecialistA robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors.
Generates full-stack web apps directly in the browser, though sometimes less structured for enterprise backend scaling.
SpecialistA developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps.
SpecialistExcels at generating high-quality front-end user interfaces, but requires additional setup for complete full-stack backend integration.
Instantly builds fully functional web apps with integrated databases and payments, but features fewer advanced customization controls.
Free / Open-sourceA comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript.
SpecialistTransforms spreadsheets into interactive business apps easily, but lacks the raw code generation flexibility of full-stack AI builders.
Turns conversational prompts into published web and mobile apps, but has fewer enterprise-grade scaling templates.