# erweixin/langshift.dev

🌍 Programming language learning platform for developers. Master new languages through comparison learning. Interactive editor, performance monitoring, multi-language support.

Repository: https://github.com/erweixin/langshift.dev
Canonical: https://ross.abutalabs.com/products/langshiftdev
Homepage: https://langshift.dev
Language: MDX
License Family: other
Topics: code-comparison, interactive-learning, programming-language-learning
Last push: 2026-07-19T04:20:28+00:00

## Health v2 (maintenance only)
Score: 60/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 93, release rhythm 35, longevity 30
- inputs: {"age_days": 421, "days_push": 45, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1118, forks 94 (observed 2026-08-28T04:03:39.282030+00:00)

## What it is
LangShift.dev is a free, open-source web platform that teaches developers new programming languages through side-by-side comparison with languages they already know, such as JavaScript to Python, Rust, Go, Kotlin, C++, C, Swift, and Java. It offers 80+ progressive learning modules with interactive code editors, syntax and concept mappings, real-world projects, and LeetCode problem walkthroughs, built with Next.js, React, TypeScript, and MDX.

## Use cases
- learn python as a javascript developer
- learn rust coming from javascript
- compare syntax between two programming languages side by side
- free programming language tutorials without signup
- learn go concurrency from a javascript background
- transition from backend python to full-stack javascript
- learn c pointers and memory management with an interactive editor
- practice leetcode hot 100 problems with explanations

## When to choose
- you already know one language (e.g. JavaScript or Python) and want to leverage that knowledge to learn another quickly
- you prefer side-by-side syntax comparisons and concept mapping over from-scratch tutorials
- you want free, browser-based interactive lessons with runnable code examples and no registration
- you want structured, progressive module paths covering basics through idiomatic style and real projects

## When to avoid
- you are a complete beginner with no prior programming experience, since the material assumes familiarity with a source language
- you need officially certified or academically accredited coursework
- you need a language pair not yet covered, such as Python to Rust or JavaScript to Dart
- you require guaranteed up-to-date accuracy, since some content is AI-assisted and the project recommends pairing it with official documentation

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, editor, developer-tools
- domain: education, programming-languages, tutorials, web-development
- platform: browser
- tags: comparison-learning, interactive-code-editor, mdx, nextjs, fumadocs, free-tutorials, leetcode, syntax-mapping, open-courseware, multi-language, web

## Member repositories
- erweixin/langshift.dev (main) score 60

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:39.282030+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:41:47.447840+00:00, confidence not recorded.
  - readme: https://github.com/erweixin/langshift.dev (fetched 2026-08-28T04:03:39.282030+00:00, sha 708d4c0e9868)
  - homepage: https://langshift.dev (fetched 2026-08-29T12:45:26.525942+00:00, sha dc5e57c10f1e)
  - site_page: https://langshift.dev/zh-cn/docs/js2py (fetched 2026-08-29T12:45:26.534969+00:00, sha bd84aade364b)
  - site_page: https://langshift.dev/zh-cn/docs/js2rust (fetched 2026-08-29T12:45:26.537006+00:00, sha e68af0d89fa0)
  - site_page: https://langshift.dev/zh-cn/docs/js2cpp (fetched 2026-08-29T12:45:26.538775+00:00, sha 8bac02389f2e)
  - site_page: https://langshift.dev/zh-cn/docs/js2go (fetched 2026-08-29T12:45:26.540508+00:00, sha 3169a39b10de)
  - site_page: https://langshift.dev/zh-cn/docs/js2swift (fetched 2026-08-29T12:45:26.542348+00:00, sha 6c2c5fbd2a4b)
  - site_page: https://langshift.dev/zh-cn/docs/js2c (fetched 2026-08-29T12:45:26.544289+00:00, sha 8c8161c8d348)
  - site_page: https://langshift.dev/zh-cn/docs/js2kotlin (fetched 2026-08-29T12:45:26.546011+00:00, sha 1663e9fef241)
  - site_page: https://langshift.dev/zh-cn/docs/py2js (fetched 2026-08-29T12:45:26.547562+00:00, sha 805234445df7)
- Data as of 2026-08-30T08:39:29.467469+00:00.