Validated ideas - List of 5,000 poorly executed but popular apps
Folloh - It brings all the news you want from around the web
The 25 Days of Ideas - Free resources for coming up with startup ideas
LetterHunt - LetterHunt connects you to 10,000+ niche, active newsletter writers to promote your product.
IdeasAI - OpenAI-powered startup idea generator
Startup Quote - Awesome founders provide wisdom about making things