UXPin + Slack - Keep tabs on design projects in Slack
Annotate.tv - Optimize your learning on YouTube
StatusOk (Open source) - Get notified through Slack/email when your website is down
Slid - Capture knowledge from online videos, courses, and webinars
Attentive - A marketing channel, built for retail & e‑commerce
SkillTube - A curated list of best courses from YouTube & other platform