Byosynch
Byosynch – Continuous two-way file sync over SSH for Mac and Linux Disclaimer: I'm the developer of byosynch. Long time Dropbox customer. Really like its simplicity and convenience, but a couple things always bothered me: their lackluster command line support, and the fact that they have my files. Byosynch tries to fix these gaps (first-class CLI support, backing store of your choice, privacy-friendly) while being easy to use. We currently support macOS and Linux, with an iOS client coming soon. This is a paid service, designed to finance continued development. Happy to answer any questions and hear your feedback!