Agenda - A date-focused note taking app for both planning and documenting your projects.
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.
Notepin - Extremely simple note-taking + blogging ✍️
Toby for Teams - Better bookmarks, now with collaboration baked in 🔖
Bear - Bear.app is a note-taking and content writing app that helps you boost productivity with its intuitive tools.
Planyway - Visual project management for Jira and Trello: manage resources, build project roadmaps, use time tracking.