I have launched my new service: https://arkfile.net This is a client-side encrypted file backup/sharing app using object storage to store encrypted blobs -- extremely privacy centric. No email for signup, uses OPAQUE auth to keep passwords client side too. MFA required for all accounts for better security. Fully FOSS. Accepting XMR for pay-as-you-go and will accept BTC/LN soon through BTCPayServer. 1 GB free baseline for everyone. Try it out!