Online Smalltalk Compiler
Write Smalltalk in the browser and run it on our machines. The editor is opening.
Free online Smalltalk compiler and editor
JDoodle is an online IDE that has served the programming community since 2013. You write, compile, and run code in the browser for Smalltalk and many other languages, without installing a toolchain.
What you see on this page is JDoodle’s free Smalltalk compiler. Write Smalltalk in the editor, press Execute, and JDoodle runs it on its servers. You do not install Smalltalk, and you do not need a JDoodle account to run code.
Online Smalltalk editor
JDoodle’s Smalltalk editor on this page highlights syntax, completes as you type, matches brackets, and folds blocks. It is an online Smalltalk editor and a compiler together: you write here, then Execute runs your program on JDoodle’s servers.
Smalltalk versions on JDoodle
JDoodle runs Smalltalk GNU Smalltalk 3.2.92.
Frequently asked questions
Is JDoodle’s online Smalltalk compiler free?
Yes. JDoodle lets you write and run Smalltalk without paying. A JDoodle account is only needed to save projects, use more AI credits, or unlock faster workspaces.
Do I need to install Smalltalk to use JDoodle?
No. JDoodle runs Smalltalk on its servers. Open this page in a browser and execute.
Is this an online Smalltalk editor or a compiler?
Both. The page is an online Smalltalk editor and it compiles and runs what you write.
Input, interactive runs, files, and the rest of the editor work the same on every language. See the JDoodle IDE documentation.