Unsplash Wallpapers for Mac (Official) - Curated, HD desktop background photos from Unsplash.
PyCharm - Python & Django IDE with intelligent code completion, on-the-fly error checking, quick-fixes, and much more...
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.
Thonny - Python IDE for beginners
Wallpaper Wizard - Wow-worthy backgrounds for Mac
Spyder - The Scientific Python Development Environment