Papermark

A document sharing platform that gives professionals built-in analytics and tracking for every file they send, showing exactly when and how recipients engage with shared documents. Created as a bootstrapped side project with an MVP shipped over a single weekend, the service directly competes with established tools like DocSend by offering a leaner, more accessible alternative. The founder grew it into a sustainable subscription business generating $100,000 a year, demonstrating that focused utility software solving a clear pain point can thrive without venture funding.