Mattermark Daily - A curated newsletter of blog posts from investors & founders
Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
LetterHunt - LetterHunt connects you to 10,000+ niche, active newsletter writers to promote your product.
Elpha - The most powerful network for women in tech.
Startup Quote - Awesome founders provide wisdom about making things
Makerlog - Makerlog is the dead-simple task log that helps you stay productive and ship faster.