Validated ideas - List of 5,000 poorly executed but popular apps
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
The 25 Days of Ideas - Free resources for coming up with startup ideas
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
IdeasAI - OpenAI-powered startup idea generator
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.