OpenTex is a free alternative to Overleaf that runs in your browser. Compile pdfLaTeX and XeLaTeX with no install and no compile timeout, write with co-authors in real time, review with suggestions and comments, keep unlimited history and sync with GitHub.

Hi Product Hunt! 👋

I'm Sangho, a grad student at POSTECH. I write papers in LaTeX every day, and I wanted an editor that keeps up with how papers actually get written now: co-authors, reviewers and round after round of revisions.

So I built OpenTex, a free alternative to Overleaf that runs right in your browser:

Real-time co-editing: invite co-authors and pick their role (editor, reviewer or viewer)
pdfLaTeX and XeLaTeX compiled in your browser, with no install and no compile timeout
Track changes, suggestions and review comments, with a review history that stays
Unlimited version history: label it, diff it, restore it
Two-way GitHub sync
A paper library that only pulls references from real registries

No account needed to start: open it and write. Sign in with Google when you want to save to your account and share.

It's free, and I want to keep it that way. If it helps you, sponsoring keeps the compiler running: opentex.ai/support 🙏

Coming next: an AI reviewer that reads your draft like Reviewer 2… before Reviewer 2 does.

I'd love your feedback. What would make you switch for your next paper?

Quick update: OpenTex has been redesigned.

• A calmer editor for long writing sessions, with the LaTeX syntax colours you already know
• New Visual mode: formulas, headings, lists and tables appear typeset as you write. Click any part to edit its LaTeX
• Faster first compile: the compiler's files now download compressed

The new video and screenshots above show the updated editor. Thanks to everyone who has tried OpenTex so far.

Bring your AI Agent into the LaTex!