hkri

For developers/tech-savvy people it is more or less perfect. I love the fact that it is based on git giving you a history and great control over synchronization. I use it to store all kinds of things such as passwords and files containing environment variables that can be sourced directly from the output of pass (source <(pass dotenv/project)). It even exists a great open-source iOS client: https://github.com/mssun/passforios

DaisyDisk

Oh no! The apocalypse here!