iGallery Pro (was InstaMaster) is an excellent app that provides the best Instagram experience. Besides viewing feeds and popular and nearby photo/videos, you can also upload photos to Instagram directly from your Mac.
- Browsing Feed, Popular, and Nearby
- Like, comment, follow, search people, tags, and places
- Upload photos
- Save photos by right-clicking on the photo
- Fix minor bugs
OS X 10.10 or later, 64-bit processor