John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads

Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.

Wallpaper Cycler - NuonSoft WallpaperCycler is a powerfull utility to manage all your wallpapers and to automatically cycle between your wallpapers.

Pilot - Focus on your business, knowing that our expert bookkeepers, aided by software superpowers, are taking care of your books.

MuralPix Wallpaper Changer - MuralPix Wallpaper Changer and Screen Saver

neo.tax - automated R&D tax credits for startups = extra month of burn