DAP.EXE is Download Accelerator which is a very powerful download management application but it comes at a hefty price with a dubious privacy policy and contains Adware. More information can be found from the company that brought us Spybot.

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A few versions back, Download Accelerator Plus came even without a privacy policy, and the one found in a hidden place online contained some bad terms. Today, during the installation a license agreement will be shown, and this license agreement contains a privacy policy. It's still quite misleading and contradicting though, speaking about co-registrations with other services on the one hand, but only anonymous publishing on the other hand. How a registration with other services can be done anonymously is beyond my understanding...
In addition, just starting it opens half a dozen connections to ad servers, including Cydoor. Couldn't deal with the downloads on the site I used for this tests, as it always tried to download the download page, blocking the load of it inside the browser. On other pages, it worked ok. Still, even if you neglect the ads and possible spying, there are other download managers that are easier to use.