Annotate.tv - Optimize your learning on YouTube
productboard - Beautiful and powerful product management.
Slid - Capture knowledge from online videos, courses, and webinars
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.
SkillTube - A curated list of best courses from YouTube & other platform
ProductPlan - Cloud-based product roadmap software solution