This collection maps 20 opportunities across business models, from focused products that a solo founder can test quickly to broader platforms that need deeper integrations. The ideas span Low, Medium build scopes and use business models including One-time, Subscription. Example buyers include Sales teams, SDRs; Job seekers, career coaches; Support teams.
The three detailed previews below are deliberately different enough to compare. Look for a specific recurring problem, an audience you can reach without a huge advertising budget, and a first version that delivers one measurable result. The market figures are directional estimates. Confirm willingness to pay through customer conversations, competitor research, and a small demand test before building.