Bookmark It - Create awesome notes on YouTube videos
Annotable - Ultimate image annotation & markup tool
Notepin - Extremely simple note-taking + blogging ✍️
Airsketch - Simple screenshots + annotations for Mac 🖥️
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Weava - Workspace to highlight, organize & collaborate on your research articles.