CoCalc
Collaborative Calculation and Data Science
Office & Productivity
Overleaf
An online LaTeX editor that's easy to use. No installation, real-time collaboration, version control, hundreds of LaTeX templates, and more.
LaTeX Base
An online LaTeX editor that just works. No installation, live preview, and sharing. Get stuff done with or without an Internet connection.
Straw Poll
Straw Poll is the best place to create instant, real-time polls for free.