Tool.Domains - Search free to register expired domains

productboard - Beautiful and powerful product management.

Brandpa - Domain names for startups

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

BrandBucket - The original marketplace for business names and creative domain names.

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.