Mailbrew - Automated email digests from Twitter, Reddit, YouTube & more
Ideas Grab - A list of +3400 ideas that you can get for your projects.
Insumo - Smart newsletter with calendar and personalized habits
The 25 Days of Ideas - Free resources for coming up with startup ideas
Mailbrew Inbox - Bundle your newsletters in a single email digest 📩
Validated ideas - List of 5,000 poorly executed but popular apps