Done?
Streaks
Habitica
Todoist
X (Twitter)
Thought Train
Forest App
Things
doo
Todoist
Mendeley
EndNote
Zotero
BibDesk
Docear
PDF Stacks
Streaks - The to-do list that helps you form good habits.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Habitica - Habitica is a free habit building and productivity application.
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
EndNote - Accelerate Your Research. Save time, stay organized, collaborate with colleagues and get published with EndNote 20.
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.