ClippingMagic.com - Remove image backgrounds online. Make backgrounds transparent, white, etc. Edit, crop, rotate, fix colors, add shadows, all you need for great photos!
A.I. Gigapixel - AI based image resizer
Bg Eraser - Background Eraser on Mac and Windows.
waifu2x - Online/Offline tool to upscale images
Icons8 Background Remover - Quickly remove the background from any photo
Photozoom Pro - BenVista PhotoZoom Pro 7 creates perfect image enlargements and increases photo resolution at high quality using our patented S-Spline Max interpolation algorithm