Is my work safe?
The short answer is yes. All communication is encrypted using SSL / HTTPS, our servers are backed up hourly, and zeroheight is hosted on enterprise-grade cloud infrastructure: AWS S3. You can read more about their compliance and certifications here.
Access control is enforced using 22-character base64 authentication tokens. We never write our own security code and rely on industry best practices.
Are there any self-hosting options?
This isn't on the roadmap for now, as we're currently focusing all our efforts on our cloud solution.