
Overleaf
Authorea
ShareLaTeX
CoCalc
Papeeria
TeXstudio
Texmaker
A free Overleaf alternative. Write, edit and compile LaTeX in the browser with unlimited collaborators, 1,000+ publication-ready templates for theses, journals and CVs, and an AI assistant that runs the real compiler. No installation required.

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Which is more popular?
Based on our record, LetX.app seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | letx.app | alanaknows.com |
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| Company | Startup from Bangladesh · 1 - 9 employees · 2026 | — |
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In their own words, as submitted to SaaSHub.


LetX is a free, browser-based collaborative LaTeX editor and an alternative to Overleaf. What it does Real-time collaboration with live cursors and conflict-free merging. Collaborators you invite to a project are never charged for. Compiles in a few seconds on the full TeX Live 2024: pdfLaTeX,...
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What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of LetX.app yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Let's write LaTeX together | LetX OVC
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing LetX.app and https://alanaknows.com/.
LetX.app's answer
Researchers, postgraduate students and academic staff writing papers, theses and grant proposals, along with the labs and university departments they work in. Usage concentrates around thesis submission and journal deadlines. A secondary audience is job-seekers and engineers using the CV and résumé templates.
LetX.app's answer
Go with Gin for the API; React, TypeScript and CodeMirror 6 on the front end; Yjs CRDTs over WebSocket for real-time collaboration; PostgreSQL, Redis and S3 for storage and coordination; and SQS-queued compile workers running a full TeX Live distribution on AWS ECS Fargate.
LetX.app's answer
LetX started because collaborative LaTeX was either expensive or private in name only. Overleaf's pricing scales with the people you write with, which is backwards for a thesis committee or a five-author paper. Then the AI-native editors arrived with a worse trade: faster tooling in exchange for unpublished work that might end up as training data.
LetX was built to refuse both: unlimited collaborators on every plan, and an explicit ai-train=no declaration. Launched 27 January 2026, it has grown to 5,700+ users at 440+ universities and research labs in 65+ countries, helped by the regional university thesis templates nobody else maintained.
LetX.app's answer
Three things nothing else in the category combines. Collaboration is genuinely unmetered: every plan, including free, allows unlimited simultaneous collaborators, so cost never scales with the number of co-authors. The AI assistant runs the actual build and reads the actual error log, rather than producing LaTeX you paste elsewhere and debug yourself. And LetX declares ai-train=no, so unpublished research is never training data. The library is also unusually deep for regional needs: 1,000+ templates, including university-specific thesis formats most editors don't carry.
LetX.app's answer
Overleaf's free plan allows one collaborator per project, and more collaborators means a higher plan. LetX gives unlimited collaborators free, with full history on Pro at $18/month, a separate Academic Pro plan at $9/month for verified students, faculty and university staff, and a Team plan at $20 per seat for labs and classes of 2 to 50 people.
Against the newer AI-native editors, the difference is what happens to your manuscript: LetX declares ai-train=no, and its privacy policy says your documents are never used to train AI models.
Against desktop editors like TeXstudio or Texmaker, there is nothing to install or maintain, and every co-author gets an identical environment.
LetX.app's answer
In production since 27 January 2026. 5,700+ students and researchers at 440+ universities and research labs in 65+ countries sign up on their own; the largest groups are at BRAC University, UNAM, UC San Diego and the University of Windsor.
Share your experience with using LetX.app and https://alanaknows.com/. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


LetX makes writing and compiling LaTeX documents fast and accessible directly from the browser. The real-time collaboration is smooth and responsive, while the integrated AI assistant (Lexi AI) helps resolve syntax...
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Recommendations tracked on public social media and blogs since March 2021.


If your team writes together in LetX, the free plan has unlimited collaborators, so everyone can work in the same project at the same time. The macros.tex habit works the same in any editor, so use whatever fits your team. - Source: dev.to / 1 day ago
Tracking https://alanaknows.com/ since Jan 2023.
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