CalPrint - CalPrint uses your existing reminders and calendar entries on your iPad or iPhone (Exchange, iCal and Google Calendars etc.

productboard - Beautiful and powerful product management.

Photo Calendar Creator - Photo Calendar Creator is a convenient program for making calendars for any year or month.

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

Custom Calendar Maker - Custom Calendar Maker is a web app to design custom photo calendars

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.