Image Resizing

The best image resize program is Topaz A.I.Gigapixel

Image sharpening & noise reduction

Topaz A.I.Sharpen can not only sharpen images but correct slightly out of focus and blurred images.

Topaz A.I.Clear both sharpens and removes noise. It is the best noise reduction program around.

Photoshop and Lightroom Alternatives

Exposure X4 is the best alternative to Lightroom as far as image browsing and management goes. It is also a decent RAW converter and image editor.

Affinity Photo is the complete Photoshop replacement.

RAW Development

Skylum Luminar is a full featured RAW converter with a basic image browser. Its shadow recovery is the best in the business.

Photolemur is an automatic RAW converter, based on Luminar. Its results are very decent with facial detection and enhancement.

Photo Ninja is a purists RAW converter. It is not as fully featured as the others but it produces some of the best results, especially if you are prepared to build camera profiles.