TypeScript

Reviewed by Alexis Morain · Updated July 14, 2026

TypeScript is an open-source Microsoft language that adds static typing to JavaScript. Free, now a standard of modern web development.

TypeScript, is this your tool?Claim this listing for free to keep it up to date and unlock owner options.

SaaS Radar Review

9/10

Now an essential standard of modern web development, TypeScript brings reliability and maintainability to JavaScript, for free.

Static typing that catches errors
Better autocompletion and documentation
Extra compilation step

See full review ↓How I rate

TypeScript is an open-source programming language created and maintained by Microsoft. It is a superset of JavaScript that adds static typing: TypeScript code compiles to plain JavaScript while offering a safety net that catches many errors before runtime.

What is TypeScript used for?

TypeScript is used to write more reliable, maintainable JavaScript, especially on large projects. Typing documents the code, improves autocompletion and catches errors at compile time. It is now the de facto standard for serious web applications, widely adopted with React and Next.js.

TypeScript or JavaScript?

TypeScript adds a compilation step and typing to learn, but sharply reduces bugs and eases teamwork. For a small script, JavaScript is enough; for a growing application, TypeScript quickly becomes essential.

How much does TypeScript cost?

TypeScript is entirely free and open source, under the Apache license. There is no cost or paid tier: the language, compiler and tools are free and maintained by Microsoft and the community.

Pros & Cons

What we love

Static typing that catches errors
Better autocompletion and documentation
De facto standard on large projects
Entirely free and open source

What could be better

Extra compilation step
Typing to learn
Can be heavy for tiny scripts

Key features of TypeScript

Static typing

Error detection at compile time

Compiles to JavaScript

Runs anywhere JS runs

Autocompletion

Editor input assistance

Ecosystem

Types for most libraries

TypeScript pricing

TypeScript is entirely free and open source, released under the Apache license by Microsoft. The language, compiler and associated tools are free, with no paid tier or hidden cost. Its adoption therefore depends only on learning time and adding a compilation step to the build chain, not on a budget.

Free plan / trial

Entirely free and open source.

Open source

Free language and compiler · Apache license · Maintained by Microsoft and community

Free

Pricing verified on July 14, 2026

Try TypeScript