Instagram is a mobile, desktop, and internet-based photo-sharing application and service that allows users to share pictures and videos. Developed by Kevin Systrom and Mike Krieger
License: Free
Flickr is tailored for professional photographers and offers extensive storage, licensing, and community features, making it ideal for serious photo sharing and archiving. In contrast, Instagram is a platform primarily for casual users and influencers, focusing on social engagement and immediate content sharing, with features like stories and a large active user base.