
UniversalMigrator
Legacy code migration triage across 113 languages with AI
What it does
Migration triage for legacy codebases in 113 programming languages, powered by the Claude API. GUI and CLI. Scores migration difficulty, flags risky constructs, and drafts target-language conversions — so you know what you're dealing with before the rewrite starts.
Does the same job
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No Language Left Behind by Meta2022 · ▲116An open-source language translation system for 200 languages

- OSOpen-source CLI coding framework using Claude2024 · github.com · ▲84
- 1O1Code – Open-source Cursor-like UI for Claude CodeJan 2026 · github.com · ▲75
Hi, we're Sergey and Serafim. We've been building dev tools at 21st.dev and recently open-sourced 1Code (https://1code.dev), a local UI for Claude Code. Here's a video of the product: https://www.youtube.com/watch?v=Sgk9Z-nAjC0 Claude Code has been our go-to for 4 months. When Opus 4.5 dropped, parallel agents stopped needing so much babysitting. We started trusting it with more: building features end to end, adding tests, refactors. Stuff you'd normally hand off to a developer. We started running 3-4 at once. Then the CLI became annoying: too many terminals, hard to…
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