Math Seminars provides a listing of mathematical research seminars, talks and conferences where you can watch by online.

Please see https://mathseminars.org

Convert images of equations to LaTeX 

Take a screenshot of math and paste the LaTeX into your editor, all with a single keyboard shortcut.

Read more in https://mathpix.com/

Tex for Gmail

TeX for Gmail and Inbox is a Chrome extension which adds (La)TeX capability to Gmail and Inbox by Google