Google Docs
docs.google.com
Several people typing in one document without overwriting each other
multiply.com
Kept photos, video and blog posts in one place with real per-group privacy.
Use CryptPad instead
Collaborative documents the server cannot read, with no account to start. Pads created without an account are deleted after three months of inactivity.
Open CryptPadA family-and-friends network built around sharing media with specific groups rather than broadcasting, with privacy controls better than anything mainstream at the time. It pivoted to e-commerce in Southeast Asia, then closed entirely in 2013 and gave users a short window to retrieve their media. The domain now belongs to an advertising company.
Questions
No. Multiply is no longer running and multiply.com does not serve the tool any more. CryptPad is the closest current equivalent — it collaborative documents the server cannot read, with no account to start.
Yes. Multiply sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
Closed in 2013; the domain now redirects to an unrelated advertising business.
Alternatives
Same category or same task, ordered by how closely they overlap.
docs.google.com
Several people typing in one document without overwriting each other
meet.google.com
Video calls anyone with a Google account can join straight from a link
meet.jit.si
Open-source video meetings guests join in a browser with nothing installed
vidyard.com
Record a short video instead of booking another status meeting
cal.com
Open-source scheduling links you can run on your own server
calendly.com
Send a link and let people book a slot your calendar says is free