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Ideas, evidence and method.

Startup ideas, validation methods and market data — written from thousands of real user complaints about software people already pay for.

• Startup ideasStartup ideas for developers: 18 dev-tool gaps taken from real complaintsDeveloper-tool startup ideas drawn from complaints about frameworks, databases, testing tools, cloud marketplaces and simulation software, where the same problem is reported across many products.
• DataThe most complained-about software categories, according to 11,000 user complaintsWe clustered 11,141 complaints from public software reviews into 376 pain points across 70 categories. Here is which categories generate the most anger, the five complaints that appear everywhere, and what it means for founders.
• Startup ideasMicro-SaaS ideas you can build alone (and who would pay for them)Fourteen micro-SaaS ideas small enough for one person to build and sell, each attached to a specific buyer, a specific trigger and a specific complaint about an existing product.
• Startup ideasAI startup ideas people are already asking forWhat 1,500 complaints about AI writing tools, AI sales assistants, AI agents and chatbots reveal about where the real gaps are, and ten AI startup ideas built on them.
• MethodHow to validate a startup idea before you build it, using other people's complaintsA practical method for validating a startup idea with evidence that already exists: reviews, forums and support threads. What to count, what to ignore, and how to tell a real gap from a bug report.
• Startup ideas27 SaaS startup ideas backed by real user complaintsSaaS startup ideas that people are already asking for, grouped by the gap they fill: onboarding, pricing, support, mobile and reliability. Each one cites the complaints behind it.