What are some alternatives?
When comparing SpiderOak and Tresorit, you can also consider the following products
Dropbox - Online Sync and File Sharing
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Mega - Secure File Storage and collaboration
Google Drive - Access and sync your files anywhere
Microsoft OneDrive - Secure access, sharing & file storage
pCloud - Cloud storage service with up to 20GB for free! Store, share and send large files to anyone. Join now and have your files everywhere you go.