I tested out the Leica LUX app over the weekend and I'm astounded by the results, thanks to its lens selection and color science.
Windows comes loaded with software to meet most of your needs out of the box, but if you like free and open-source projects, or if you just want alternatives, there are plenty of great options out ...
Can you really get a Windows PC running like new again? Using this free tool from Microsoft, you can get pretty close.