Grum - Post on Instagram from your computer!
Postedo - Simple Instagram scheduler that publishes for you
HopperHQ.com - Fully automated Instagram scheduler. Create and schedule your posts online.
Uplet - Uplet is an easy-to-use bulk Instagram uploader for Mac.
InstaGhost - Upload photos directly from your PC to your Instagram account without needing your phone, schedule...
Inssist - All in one Instagram Assistant for PC. Post photos, videos, carousels and stories from Desktop. Download, pre-plan and schedule posts, analyse accounts, send DMs, multi-account and more.