Ramme is an unofficial Instagram desktop app. You can do everything except post a photo from the app. View your feed, discover new users, and comment on posts.
Ramme Features:
Dark Theme
Auto Update
Keyboard shortcuts
Background behavior
What’s new in version 3.2.5
Updated on Jul 06 2018
Version 3.2.5:
Going live with old PRs, which will probably not work
Using Instagram Lite perhaps, still to be tested but main fx are fine
It is overall, very good. It functions as a post viewer and liker, but you can't share, upload, or have multiple accounts, if these features were added, I would have no problem giving it 5 stars