Sortd - Rated the #1 App for Gmail
Pine - A lightweight, modern macOS markdown editor written in Swift
KanbanMail - A Kanban board for your emails.
THOUGHTS - An easy way to share your thoughts and feelings with friends
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.
My Mind - All your notes, bookmarks, inspiration, articles, and images in one single, private place, enhanced with artificial intelligence.