Launching today
GemType
Free, open-source Grammarly alternative powered by Gemini
30 followers
Free, open-source Grammarly alternative powered by Gemini
30 followers
GemType checks your grammar and rewrites text on any website — Gmail, LinkedIn, X, Reddit, anywhere. Like Grammarly, but free and open source: you plug in your own free Google Gemini API key. No account, no subscription, no tracking.
I just saw Gemtype on Product Hunt—what kind of use cases is it best for?
@jenjentamayo Thanks for checking it out. It's best for everyday writing in the browser: emails, LinkedIn posts, tweets, Reddit comments, support replies, forms. Anywhere you type, it underlines mistakes and fixes them in one click.
Two groups get the most out of it: people writing in a second language (it auto-detects and checks any language), and anyone who wants quick tone rewrites: select a sentence, hit Formal for a work email or Casual for social. There's also a Word add-in if you write documents.
How well does GemType work on sites with rich text editors like Notion or Google Docs?
@zooey_plays Good question, Zooey. Notion works — tested it myself (check screenshot). Rich editors in general work well because GemType never touches the page's editor; it draws underlines on a separate overlay, so editors like Gmail, LinkedIn, X, and Reddit stay stable.
Google Docs is the one exception: it doesn't use real text fields (everything is drawn on a canvas), and Google only opens its annotation API to a small whitelist of vendors. That one's out of my hands for now.
@rhoda_kathambi Honest answer: making underlines appear in the right place on every website without breaking the site's own editor. Rich editors like the ones in Gmail or Reddit fight back if you touch their DOM, so everything is drawn on a separate overlay and fixes are applied the way a real user edit would be.
My favorite bug: on Reddit everything worked perfectly — invisibly. Reddit's CSS hides unknown custom elements, so my overlay was rendering with visibility:hidden the whole time. Took a while to figure out that the code wasn't broken, it was just invisible.
Can Gemtype be used completely offline, or does it require an internet connection because it uses Gemini?
@duvan_molano . It needs an internet connection, duvan — the checking itself happens on Google's Gemini API, so there's no offline mode today. The upside of that trade-off is there's no heavy model running on your machine.
Support for local models (like Ollama) is something I'm considering for the roadmap — that would make fully offline checking possible for people who want it.
curious, can it learn my writing style over time or does it just use generic prompts?
@ddamba_eddy Right now it doesn't learn your style — and that's actually deliberate. GemType stores nothing about you anywhere (no server, no account), so there's nothing to learn from. Corrections keep your exact wording, and rewrites are presets you choose (Improve, Shorten, Formal, Casual).
Per-site tone preferences are on the roadmap ("always formal in Gmail"). Real style learning would mean storing your writing somewhere, so if I ever add it, it'll be local-only and opt-in.
"Can Gemtype be used for commercial projects, and are there any licensing limitations?"
@alma_joy_awitin There are no limitations. Since it is open-source, you are free to use it.
honestly love that it runs without an account or tracking, just plug in your key and go. the no-frills approach feels really considered, like you guys actually thought about what people want instead of stuff another dashboard.
@salimwpnh Thanks Salim — that means a lot. It's just me building this, and "no account, no dashboard, no tracking, just plug in a key and write" was the whole point from day one. Glad it comes through.