Startup idea hubs, guides and tools

Every industry idea hub, guide and tool we've published, in one place. Each one links back to the scored ideas and the scoring method behind it.

Startup ideas by industry

• Healthcare SaaS Ideas for Small Clinics: Mobile Vets and Dental Intake: Eight healthcare SaaS ideas for small clinics, from mobile vet intake to dental new-patient forms, with real comparables and how to test them.
• Home Service Business Software Ideas: Pressure Washing, Cleaning and HVAC: Eight home service business software ideas for pressure washing, cleaning and HVAC shops, each with a why-now line and a way to validate it.
• Micro SaaS Ideas: The Smallest Buildable Ideas From the Board: Nine micro SaaS ideas small enough for one developer, each with a one-line why-now, plus a practical way to validate before you write code.
• Real estate SaaS ideas: 8 niches worth testing: Real estate SaaS ideas for small landlords and property pros: 8 specific niches, why each is timely, and how to validate before you build.
• Restaurant tech startup ideas worth testing in 2026: Eight restaurant tech startup ideas with a why-now for each, from ghost kitchen allergen labels to review replies, plus how to validate them.
• Trucking software startup ideas worth testing: Eight trucking software startup ideas for small fleets and owner-operators, each with a why-now, plus a cheap way to test demand before you write code.

Guides

• How to Find SaaS Ideas: Rules, Job Posts and Review Complaints: Learn how to find SaaS ideas using regulation changes, job posts and review complaints, with steps, examples, mistakes and a scoring method.
• How to Validate a Startup Idea: A Practical, Evidence-First Guide: Learn how to validate a startup idea in six steps: interview buyers, test pain, check timing, study competitors, and get a paid commitment.
• Is My Startup Idea Good? How to Check Before You Build: Is my startup idea good? Check pain, why-now, revenue, market and ease with evidence, see a worked scoring example, then score your idea free.
• Startup Idea Validation Checklist: A Printable Sheet Built on Five Signals: A printable startup idea validation checklist built on five signals: pain, why-now, revenue, open market and ease, plus an evidence discount.

Tools

• Business Idea Score Calculator: Free business idea score calculator. See the weighted formula (pain, why-now, revenue, market, ease, evidence), a worked example, and its limits.
• Startup Idea Validator: Score Your Idea in the Proofline Lab: Use the free Proofline Lab as a startup idea validator: five weighted criteria, an evidence multiplier, and worked example outputs.