Cryptomator is a multi-platform transparent client-side encryption of your files in the cloud. Developed by Cryptomator
License: Open Source
Cryptomator is an open-source, cost-effective solution focused on personal encryption for cloud storage, while Tresorit offers robust security features, collaboration tools, and file versioning aimed at businesses. The choice between them largely depends on the user's need for collaboration and advanced features versus budget and simplicity.