LinkedIn Learning

LinkedIn Learning, born from the 2015 $1.5 billion Lynda.com acquisition, offers 21,000+ professionally polished courses in business, technology, and creative skills. It uniquely syncs certifications directly to your LinkedIn profile, a feature no other platform on this list provides. Average user ratings for its leadership and software courses are 4.5/5 stars, but its $30/month subscription is pricier than #8 Brilliant's $25/month plan. Check if your employer or public library offers free access—many do, which makes it cheaper than the typical rival when subsidized.