Ariyh - 3 min practical marketing tips based on research
TikTok Analytics - Find out more about your favorite influencer on TikTok
Social Insider - Get an inside view of your competitors' Facebook activity
Popsters - Analyze your social media pages and spy on your competitors
Trendpop Hot 100 - Track the most viral trends on TikTok, updated daily.
Marketing for Devs - A book for programmers who want to learn marketing.