NO SUS sends notes and files that open once. Burn Notes and Burn Files are encrypted on your device; the link keeps the key after the # sign, which browsers do not send to the server. One link can hold up to 10 files, 50 MB combined, and the sender and reader need no account on the website.

For documents, Watermarked links put each viewer's typed email across the page and keep a view log with the email, device and time. For text, Traceable copies give up to 100 readers a slightly reworded copy, so pasted leaked text points to a reader's copy (a strong hint, not proof).

Web app plus an Android app in beta on Google Play. Free to use. Not open source. Built in Mumbai by Shubham Sahu.