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GemType
Free, open-source Grammarly alternative powered by Gemini
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.
Hi Product Hunt — I'm Ripon, a solo founder at Matily, an open-source studio.
I wanted Grammarly's "fix my writing everywhere" experience without the subscription, the account, or my text going to a company's servers. So I built GemType.
GemType underlines grammar and spelling mistakes in any text field — Gmail, LinkedIn, X, Reddit, docs, forms — and fixes them in one click. Select any text and you can rewrite it too: Improve, Shorten, Formal, or Casual. And it works in any language, automatically.
It's live today on Chrome, Edge, and Firefox.
The twist: it runs on YOUR own free Google Gemini API key. That means:
- It's genuinely free (Gemini's free tier is plenty for daily writing)
- Your text goes straight from your browser to Google's API — no GemType server in the middle, no account, no tracking
- It's fully open source (Apache 2.0), so you can read and audit exactly what it does
Where it's going: GemType isn't just a browser extension — I'm building it to follow you everywhere you write. iOS and Android keyboards and a Microsoft Office add-in are next, all sharing the same private, bring-your-own-key core.
A few honest notes:
- You need a free Gemini key from Google AI Studio (2 clicks, no credit card). It's one extra step vs. Grammarly — the price of "no middleman server."
- Google Docs isn't supported yet (it renders to a canvas and locks its API to whitelisted vendors).
- It's an indie/solo project. A Safari build is ready too — I just need to cover Apple's $99/yr developer fee, so I set up GitHub Sponsors.
I'd genuinely love your feedback — which platform should I ship next, and what would make you switch from Grammarly? I'll be here all day.
— Ripon, founder of Matily
P.S. GemType isn't affiliated with or endorsed by Grammarly — I just wanted an open, private take on the idea. "Grammarly" is a trademark of Grammarly, Inc.
About GemType on Product Hunt
“Free, open-source Grammarly alternative powered by Gemini”
GemType was submitted on Product Hunt and earned 16 upvotes and 33 comments, placing #52 on the daily leaderboard. 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.
On the analytics side, GemType competes within Chrome Extensions, Writing, Artificial Intelligence and GitHub — topics that collectively have 627k followers on Product Hunt. The dashboard above tracks how GemType performed against the three products that launched closest to it on the same day.
Who hunted GemType?
GemType was hunted by Ripon Chandra Malo. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of GemType including community comment highlights and product details, visit the product overview.
Ripon Chandra Malo