Ask HN: Secure, Private Cloud Storage Recommendations

Hi All,

I'm in the market for a small business cloud storage solution with the following characteristics:

1) Data storage in Germany

2) Client-side encryption before data transfer

3) OSX / Win Support

4) Easy sharing files with 4-5 contractors / clients

5) Data versioning

6) 1 TB Storage

7) Stable / Reliable

Any recommendations would be kindly appreciated. Thanks!

P.S. If you're a crypto-pro, how do you feel about Tresorit's claims about encryption?