What are some alternatives?
When comparing Instagram and Twitter, you can also consider the following products
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
PixelFed - PixelFed is a federated image sharing platform, powered by the ActivityPub protocol.
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!
Flickr - image and video hosting website
Diaspora - The online social world where you are in control.
Pixlr - Pixlr® makes it easy to transform everyday images into stunning works of art.