C
CodeMirror
codemirror.net
Extensible code editor component for the browser, rewritten as modular CodeMirror 6 in 2022.
Acorn by Marijn Haverbeke
Small, fast JavaScript parser written in JavaScript and used across the build-tool ecosystem.
Visit Acorn ↗About Acorn
Small, fast JavaScript parser written in JavaScript and used across the build-tool ecosystem. Acorn is a developer tools product built by indie maker Marijn Haverbeke, launched in 2012.
- Status
- Active
- Launched
- 2012
- Category
- Developer Tools
- Website
- github.com
More products by Marijn Haverbeke
P
ProseMirror
prosemirror.net
Toolkit for building schema-based rich-text editors on the web, with collaborative editing support.
E
Eloquent JavaScript
eloquentjavascript.net
Free online JavaScript textbook, published in print by No Starch Press and now in its fourth edition.
L
Lezer
lezer.codemirror.net
Incremental LR parser system that powers syntax highlighting and analysis in CodeMirror 6.
W
Wordgard
wordgard.net
Semantic rich-text editor library released in 2026, built on lessons from ProseMirror.
Crowdfunded JavaScript code-analysis engine that provided editor autocompletion and type inference.
Acorn FAQ
What is Acorn?
Acorn is a developer tools product: Small, fast JavaScript parser written in JavaScript and used across the build-tool ecosystem.
Who made Acorn?
Acorn was made by Marijn Haverbeke, Creator of CodeMirror, ProseMirror and Acorn; author of Eloquent JavaScript. It launched in 2012. Marijn Haverbeke has also built CodeMirror, ProseMirror, Eloquent JavaScript, Lezer.
Is Acorn still active?
Yes. As far as IndieMakerList knows, Acorn is still active and run by Marijn Haverbeke at github.com.
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