LetX is a free online collaborative LaTeX editor for student teams.
Compile in 1–2 seconds, work together in real time, and your writing is never used to train AI.
\begin{equation}
E=mc^2
\end{equation}
Analysis of Efficiency
Our results indicate a 200% increase in writing efficiency when using real-time collaboration tools.
The implementation of simultaneous editing features allows for seamless integration of diverse research inputs...
This equation needs a citation referencing Einstein's 1905 paper!
Trusted by research teams at
Real-time Collaboration
Write together, review together. See changes as they happen with zero latency. Leave comments and track every revision in the history.
- Visual Version History
- Live Cursor Sync
- Threaded Comments
Quantum Entanglement
The phenomenon where particles become interlinked interacting systems regardless of the distance separating them.
Measurements of physical properties such as position, momentum, spin, and polarization performed on entangled particlesSarah is typing...are found to be perfectly correlated.
Mike
Can we add the Bell's theorem citation here?
Create a visual explainer of your report/research in seconds with the QS animation engine.
Intelligent AI Assistant
Stuck on a sentence? Need to format a complex table? Our AI copilot understands LaTeX and helps you write faster and correct errors instantly.
Instant Templates
Don't start from scratch. Choose from publisher-compliant templates for journals, theses, CVs, presentations, and more.
"LetX has completely transformed how our lab publishes papers. The real-time collaboration is indistinguishable from magic."
Ready to write your masterpiece?
Join 50,000+ researchers writing on LetX today.
Built by researchers, for researchers.
Accelerating scientific discovery by removing the friction from writing.
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Frequently Asked Questions
Everything you need to know about LetX, the online collaborative LaTeX editor.
What is LetX?
LetX is a free online collaborative LaTeX editor — an Overleaf alternative that runs in your browser with no installation. Teams write LaTeX together in real time, compile to PDF in seconds, and use SyncTeX to jump between source and output.
Is LetX free?
Yes. LetX is free to use with unlimited projects, unlimited collaborators, and unlimited compiles. Unlike Overleaf, which limits free collaborators, LetX does not charge per collaborator.
How is LetX different from Overleaf?
LetX offers free unlimited real-time collaborators (Overleaf charges beyond one on its free tier), faster compiles with no queue throttling, and 80+ ready-to-use academic and CV templates. Both run in the browser with no installation.
Do I need to install anything to use LetX?
No. LetX is fully web-based and works on Mac, Windows, and Linux in any modern browser. There is no LaTeX distribution to install — compilation runs on LetX's servers.
Can I collaborate with others in real time?
Yes. LetX uses Yjs CRDT technology (the same algorithm class as Figma) for merge-conflict-free real-time editing. Multiple people can edit the same document simultaneously and see each other's cursors.
Can I import my existing Overleaf or LaTeX project?
Yes. Use '+ New Project' and select 'Upload ZIP' to import an existing LaTeX project, including projects exported from Overleaf.