Postedo - Simple Instagram scheduler that publishes for you
4K Stogram - Free Instagram Downloader for macOS, PC and Linux. Search, download or backup Instagram photos shared by any user. Follow your favorite photographers and stay tuned!
Grum - Post on Instagram from your computer!
Ramme - The Unofficial Open Source Instagram Desktop App
InstaGhost - Upload photos directly from your PC to your Instagram account without needing your phone, schedule...
Vurku - Download Instagram posts by username or hashtag