The best alternatives to Phase are Tresorit, XOR Drive, and Ubiq Security. If these 3 options don't work for you, we've listed a few more alternatives below.
Tresorit is an online cloud storage service based in Switzerland and Hungary that emphasizes enhanced security and data encryption for Businesses and individuals/freelancers. ... Tresorit has been likened to a high-security alternative to Dropbox.
Store and manage your files, encrypted and decentralized. Access from anywhere.
Store/manage all your files encrypted and decentralized. Powered by Blockstack.
We simplify encryption for developers. Encryption is hard to get right and easy to get wrong, that’s why we built Ubiq, an entirely API-based SaaS platform that enables developers to build encryption directly into their applications with a few lines of code.
Built on Blockstack, Mevaul is a file storage and sync service that helps you store your personal and private files securely. It uses Blockstack and Gaia under the hood to give you true data privacy.