it was super easy to use this tool and share files without registration for free
Tresorit - Encrypted cloud storage for your confidential files. Using Tresorit, files are encrypted before being uploaded to the cloud. Start encrypting files for free.
Keybase Chat - End-to-end encrypted chat built into Keybase
Jumpshare for Windows - Incredibly fast, real-time file sharing
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
File Doge - File doge let's you share your files with ease for fully free without any ads.
Seald - Keep your conversations secure, everywhere.