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AUCTeX vs Overleaf: catalog facts
AUCTeX	Overleaf
Free Free software from the GNU Project.	Freemium A free tier is available. Paid plans add collaborators and compile time. A community…
Windows, macOS, Linux	Web, Self-hosted
Supports LaTeX, ConTeXt, Texinfo, AMS-TeX and docTeX preview-latex shows formulas as images in the source	No local TeX installation, and collaborators can join instantly Large template library for journals, theses and CVs
Requires GNU Emacs and familiarity with it Needs a separate TeX distribution to compile documents	Free accounts limit collaborators and compile time Self-hosting the community edition lacks many hosted features
Downloadable app	Web application, Self-hosted
Open source	Open source
License: GPL-3.0-or-later	License: AGPL-3.0
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.