OpenStartup.dev - A collection of open startups

productboard - Beautiful and powerful product management.

Plezi - Plezi offers content marketing management software solution.

Aha - Aha! is the new way to create visual product roadmaps. Web-based product management tools and roadmapping software for agile product managers.

MailChimp - MailChimp is the best way to design, send, and share email newsletters.

ProdPad - ProdPad helps your team gather ideas, surface the best ones and turn them into product specs, and then put it all on a product roadmap.