Open source compiler projects

Every project in the registry tagged compiler, ranked by real GitHub adoption.

projects 15 combined stars ★ 408K refresh nightly
01 next.js ★ 143K

The React Framework

last push15 hours ago languageJavaScript licenseMIT
02 webpack ★ 66K

A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Throug

last push14 hours ago languageJavaScript licenseMIT
03 gatsby ★ 56K

React-based framework with performance, scalability, and security built in.

last push13 days ago languageJavaScript licenseMIT
04 parcel ★ 44K

The zero configuration build tool for the web. 📦🚀

last pushyesterday languageJavaScript licenseMIT
05 esbuild ★ 40K

An extremely fast bundler for the web

last push3 months ago languageGo licenseMIT
06 mitosis ★ 14K

Write components once, run everywhere. Compiles to React, Vue, Qwik, Solid, Angular, Svelte, and more.

last push5 days ago languageTypeScript licenseMIT
07 rspack ★ 13K

Fast Rust-based bundler for the web with a modernized webpack API 🦀

last push14 hours ago languageRust licenseMIT
08 lightningcss ★ 7.7K

An extremely fast CSS parser, transformer, bundler, and minifier written in Rust.

last pushyesterday languageRust licenseMPL-2.0
09 farm ★ 5.6K

Extremely fast Vite-compatible web build tool written in Rust

last push16 hours ago languageRust licenseMIT
10 opal ★ 4.9K

Ruby ♥︎ JavaScript

last push2 months ago languageRuby licenseMIT
11 trunk ★ 4.4K

Build, bundle & ship your Rust WASM application to the web.

last push7 days ago languageRust licenseApache-2.0
12 Transcrypt ★ 2.9K

Python 3.9 to JavaScript compiler - Lean, fast, open!

last push5 months ago languagePython licenseApache-2.0
13 kcl ★ 2.4K

KCL Programming Language Core and API (CNCF Sandbox Project). https://kcl-lang.io

last push37 hours ago languageRust licenseApache-2.0
14 llm-wiki-compiler ★ 2.2K

The knowledge compiler. Raw sources in, interlinked wiki out. Inspired by Karpathy's LLM Wiki pattern.

last push3 days ago languageTypeScript licenseMIT
15 ainativelang ★ 639

AINL helps turn AI from "a smart conversation" into "a structured worker." It is designed for teams building AI workflows that need multiple steps, state and m

last push2 months ago languagePython licenseApache-2.0

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Frequently asked questions

How many open source compiler projects are there?

This registry tracks 15 projects tagged compiler, with 407,813 GitHub stars between them. The most-adopted is next.js at 143,462 stars.

Are these compiler projects free to use?

Yes — 15 of the 15 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.

Which compiler project should I choose?

The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.

Are these compiler projects still maintained?

14 of the 15 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.