iWeb FTP - Web Based File Storage
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
ProtectPDF.io - Keep your ebook safe and prevent sales loss
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Locklizard Safeguard PDF Security - Locklizard Safeguard PDF Security provides total PDF DRM protection and control over your documents...
Slack - A messaging app for teams who see through the Earth!