What is cpython built with?

The ones that share most of its stack: modelscope/FunASR, JetBrains/compose-multiplatform, and flutter/flutter.

cpython is a C repo. It is tested with Hypothesis. It has 2,285,105 written lines, with 1,420 test files.

Read on November 5, 2026, at commit aaaf61c. Read it as markdown

Frontend

Ordered by how much of its stack they share with cpython, then by stars.

modelscopeFunASR
20.9k
Open-source speech recognition toolkit for training, inference, streaming ASR, VAD, punctuation, speaker diarization pipelines, and OpenAI-compatible/MCP serving.
3 of 8 in common · PythonCompare →
JetBrainscompose-multiplatform
19.5k
Compose Multiplatform, a modern UI framework for Kotlin that makes building performant and beautiful user interfaces easy and enjoyable.
3 of 8 in common · KotlinCompare →
flutterflutter
181k
Flutter makes it easy and fast to build beautiful apps for mobile and beyond
2 of 8 in common · Dart
tauri-appstauri
112.5k
Build smaller, faster, and more secure desktop and mobile applications with a web frontend.
2 of 8 in common · Rust
termuxtermux-app
64.1k
Termux - a terminal emulator application for Android OS extendible by variety of packages.
2 of 8 in common · Java
bannedbookfanqiang
56.4k
翻墙-科学上网
2 of 8 in common · Kotlin