PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.
OpenStartup.dev - A collection of open startups
Product Hunt - A website that lets users share and discover new products
Plezi - Plezi offers content marketing management software solution.
SimilarPages.com - SimilarPages has found and classified millions of interesting sites hidden due to low popularity with the goal of helping you discover and search a larger portion of the web
MailChimp - MailChimp is the best way to design, send, and share email newsletters.