
Visual note-taking on a canvas for deep research and learning
Heptabase is a visual thinking tool where you arrange cards on an infinite canvas to understand complex topics. It is particularly strong for research, learning, and connecting ideas spatially. Used by founders doing deep work — product strategy, market research, or learning a new domain — who think better when they can see the whole picture.

Snippyly
Real-time screenshot annotation and team collaboration via Chrome extension

Transistor.fm
Podcast hosting with unlimited shows, analytics, and dynamic ad insertion

csvbox.io
Embeddable CSV and Excel file import widget for SaaS applications

Markup Hero
Screenshot and annotation tool with searchable history and team sharing