CSS Scan - Instantly check or copy computed CSS from any element for only ~95$
Ziteboard - Ziteboard is an zoomable online whiteboard that lets team to collaborate in real-time.
Hoverify - All-in-one browser extension to improve your web dev experience.
Voynetch - Share your visual notes and graphic recordings.
Shuffle for Tailwind CSS - Tailwind CSS editor for busy developers
AuthorBee - Organize Twitter around your interests