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We use TeX Live 2021 for new projects and copies of existing projects, which provides about 4000 packages, including:

For more details please see this blog post.

Existing projects use the TeX Live image that was current at the time the project was created, to prevent package updates from affecting existing projects. To update an existing project to our latest TeX Live version, you can make a copy of the project and continue working in the updated copy oe this select your TeX Live version from the Project menu.

Also note that you can upload .sty and .cls files for other packages, for example those from CTAN.

Overleaf guides

LaTeX Basics


Figures and tables

References and Citations


Document structure





Field specific

Class files

Advanced TeX/LaTeX