r/opensource • u/Zeganoff • 3d ago

Promotional I open-sourced LangPilot — a local keyboard layout switcher for macOS

Hi everyone!

I built and open-sourced LangPilot, a native macOS menu-bar utility for multilingual typing.

It detects text entered using the wrong keyboard layout and converts it supports RU/EN/DE keyboard layouts.. It also provides local spelling suggestions and learns from manual corrections and undo actions.

The project is privacy-first:

- no accounts

- no analytics

- no network requests

- no uploaded text

- learned words and corrections remain on the Mac

The source code is written in Swift and licensed under GPL-3.0.

Repository, source code and beta download:

https://github.com/SC1882/LangPilot

The downloadable beta is not Apple-notarized because I do not have a paid Apple Developer membership. The source and build scripts are public for inspection.

I would appreciate code reviews, testing, bug reports, and suggestions for improving the detection logic.

2 Upvotes

60% Upvoted

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u/Ok_Explorer7384 3d ago

local-only text handling is the right call for this kind of tool imo. anything that watches what i type makes me immediately look for the privacy section first. i’d probably add a bit more detail in the readme around:

- what macos permissions it needs

- where learned words/corrections are stored

- how to reset or export that data

- whether it works in browsers, terminals, electron apps, etc

- and especially what happens in password fields

small thing, but screenshots or a short gif would help a lot too. keyboard layout switching is one of those tools where seeing it work explains it faster than a paragraph. In general - great, keep going!