100% in browser editing tools (no upload to server)

Recently AudioMass was here on ShowHN. Many people were enthusiastic about the idea of having similar tools 100% in browser with local editing (no need to upload content to server).

Would you have a recommendation of similar tools for:

* video? (like Adobe Premiere, Rush) * photo/graphic design, i.e. a Photoshop in the browser, 100% local editing, no account to create, etc. * PDF manipulation, like Adobe Pro, idem: no account to create, no upload