provides a variety of software programs for audio, video, editing, ripping, graphics, and AVI/Mp3/Sound converters. They also have released a program called Warp Speed PC Tune-up which purports to clean and optimize Windows registry. There is no statistical evidence
to back such claims. Advertisements to do so are a marketing ploy intended to goad users into using an unnecessary and potential dangerous product. It has also been reported that during installation, NCH Software installs Google Chrome Toolbar by default and is known to bundle/install other on-demand components such as codecs. For those reasons it is classified as a Potentially Unwanted Program (PUP)
which is why AdwCleaner detected it.
You can ask the developer (Xplode) a question, report an issue or suggestion at his home site: AdwCleaner Feedback
<- there is a drop down menu at the top right to "Select language" (English)
Be aware, that this issue with NCH Software has been previously reported previously so I'm not sure if Xplode is going to take any corrective action. However, he may have a suggestion to offer for how to avoid the detection so it doesn't hurt to ask.