Is Tutorsbot online compiler free to use?

Yes, Tutorsbot online compiler is completely free. No account, no installation, and no usage limits.

Which programming languages are supported?

We support 33+ languages including Python, JavaScript, TypeScript, Java, C++, C, C#, Go, Rust, PHP, Ruby, Kotlin, Swift, SQL, plus Lua, Dart, Scala, Julia, Haskell, Elixir, Clojure, Perl, Nim, Zig, Prolog, and more.

Is my code saved between sessions?

Your code is automatically saved to your browser's localStorage so you can resume where you left off. You can also generate a shareable URL.

Can I share my code with others?

Yes. Click the Share button to copy a URL that encodes your code. Anyone with the link can open and run it instantly.

Is the compiler safe to use?

Absolutely. Every program runs in an isolated sandboxed container. Your local system is never exposed to the executed code.

Online Racket Compiler

Racket is a functional programming language and platform for language creation. Run Racket code instantly in your browser.

Racket 8.3.0

main

; Online Racket compiler
; Write Racket code in this online editor and run it

#lang racket

(define (greet name)
  (printf "Hello, ~a!
" name))

(greet "Tutorsbot")

Racket is a functional programming language and platform for language creation. Run Racket code instantly in your browser.

What is Racket?

Racket is a batteries-included Scheme dialect with a powerful macro system and the #lang reader — making it the most popular "programming-language programming-language". Northeastern's How to Design Programs course teaches introductory CS in Racket, and a generation of programming-language researchers learned parsing and compilation via Racket's #lang pl.

Why run Racket in the browser

Racket's installer is ~150MB, and DrRacket — the official IDE — is a separate download. A browser sandbox is the fastest way to try a #lang racket snippet, learn S-expressions, or sketch a small DSL without installing anything.

Common Racket tasks

Language design (define your own #lang), scripting (RacketScript), web apps (Koyo on top of the Racket web server), Typed Racket for statically-typed modules, Scribble for documentation, and university CS1/CS2 curricula. The sandbox runs Racket 8.3.0.

Getting started with Racket 8.3.0

Paste a snippet — #lang racket (displayln "hi, Tutorsbot") — hit Run, see stdout. The highlighter recognises Racket's S-expressions, define/lambda/let, the #lang reader, and quote forms 'x. The default snippet shows a (greet "Tutorsbot") function call.

Why use the Racket online compiler?

Racket 8.3.0
Scheme dialect
Functional programming
Language creation

Frequently Asked Questions

Is the Racket online compiler free?: Yes — Tutorsbot's Racket compiler is completely free. No account required, no installation, and no usage limits.
Do I need to install Racket?: No. The Racket compiler runs entirely in your browser. No runtime, no SDK, no PATH configuration. Open the page and start coding.
Is my Racket code saved between sessions?: Yes — your code autosaves to your browser's local storage so you can resume where you left off. You can also generate a shareable URL.
Can I share Racket code with others?: Yes. Click the Share button to copy a URL that encodes your script. Anyone with the link can open and run it instantly — no account required on their end.
Is the Racket compiler safe to use?: Absolutely. Every program runs in an isolated sandbox. Your local system is never exposed to the executed code, and nothing is persisted after the execution window.