Maker Swipe File - 100+ high-performing Tweets to help you grow your audience
Validated ideas - List of 5,000 poorly executed but popular apps
Narrow - Narrow helps you build a targeted audience and increase your influence on twitter.
The 25 Days of Ideas - Free resources for coming up with startup ideas
Tweetflick - Save, organize & find Tweets to get the most out of Twitter
IdeasAI - OpenAI-powered startup idea generator