Coddy records 7,478,457 monthly visits with +17.8% month-over-month growth and Freemium pricing. JS2TS records 21,001 monthly visits with -21% growth and Free pricing.
Learn to code free with hands-on lessons and instant playgrounds
Free AI converter that turns plain JavaScript into fully typed TypeScript
| Dimension / Metric | ||
|---|---|---|
| Official Domain | coddy.tech | js2ts.com |
| Pricing Model | Freemium | Free |
| Monthly Visits | 7.48M (7,478,457) | 21K (21,001) |
| MoM Traffic Delta | +1.13M (+17.8%) |
| -5.58K (-21%) |
| Primary Market & Share | 🇺🇸 United States (15.4%) | 🇺🇸 United States (19.3%) |
|---|
| Direct Visits / mo | 3.13M | 8.51K |
|---|
| User Rating | 4.3 | 4.1 |
|---|
| Supported Platforms | Website | Website |
|---|
Learn to code free with hands-on lessons and instant playgrounds
Short, practice-first coding lessons that run directly in your browser, so you can start learning without installing a compiler or development environment.
Dedicated playgrounds for Python, JavaScript, C, C++, Java, SQL, React, Go, Swift and many other languages let you test snippets and experiment immediately after each lesson.
Structured curricula such as Software Engineer, Frontend, Full Stack, Backend, Data Analyst, Data Scientist, DevOps and game development bundle the skills employers actually ask for.
Streak-style daily coding challenges and progress tracking help learners build a consistent habit and stay motivated between longer courses.
Free AI converter that turns plain JavaScript into fully typed TypeScript
Paste JavaScript and receive TypeScript with type annotations, interfaces and generics added automatically, including function parameters, return types and class properties.
Handles React component code and hooks as well as Node.js modules, with JSX rewritten for TSX-style typing.
Companion tools cover JSON to TypeScript, OpenAPI to TypeScript, TypeScript to Zod, TypeScript to JavaScript, JSX to TSX, CSS to Tailwind and dozens of data-format conversions.
Conversions run immediately without an account; the site states code is processed in real time and never stored or logged.
The AI coding agent for building ambitious software
Delivers structured data science and coding courses with interactive playgrounds, but focuses heavily on data analytics rather than general software engineering.
A spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.
SpecialistTeaches computer science and logic through visual interactive puzzles and an AI tutor, but lacks traditional text-editor coding playgrounds.
The coding agent that learns your coding taste
SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.
An AI IDE and coding agent that works on your project, not just your cursor
Free / Open-sourceReactive TypeScript backend with database, functions and AI gateway
Agent orchestration platform for your whole software development lifecycle
Design-aware AI agent that turns Figma files, URLs, and prompts into live apps
SpecialistKhan Academy's AI tutor and teaching assistant for guided, Socratic learning
SpecialistYour personal AI tutor — generate a course on anything in seconds
The AI coding agent for building ambitious software
A spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.
The coding agent that learns your coding taste
SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.
Free / Open-sourceReactive TypeScript backend with database, functions and AI gateway
Agent orchestration platform for your whole software development lifecycle
Design-aware AI agent that turns Figma files, URLs, and prompts into live apps
SpecialistKhan Academy's AI tutor and teaching assistant for guided, Socratic learning
SpecialistYour personal AI tutor — generate a course on anything in seconds
