POLAR - Easily manage your reading including PDFs, web content, and notes.
A powerful document manager for Mac, Windows, and Linux for managing web content, books, and notes and supports tagging, annotation, highlighting and keeps track of your reading progress.
XMind is the most professional and popular mind mapping tool. Millions of people use XMind to clarify thinking, manage complex information, run brainstorming and get work organized.
NotePlan is a unique, bullet journal style combination of calendar, notes and to-do list with iCloud Calendar Events and Reminders integration - all in one place. For Mac, iPhone and iPad.
Pomotodo is a time management app designed for the creators. It is based on Pomodoro Technique and GTD theory. Stay focused at work and get more done with Pomotodo.
Nextcloud is an open source, self-hosted file share and communication platform. Access & sync your files, contacts, calendars & communicate and collaborate across your devices.