OpenX.exe is part of a product called known as Router Online Version 2.1 and it is developed by MangaBoxes.com - Indonesian Hentai Manga Project Team .
If you think that this file contains a virus or another malware, please download a virus scanner.
If OpenX.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Try to install an antivirus to see if it helps.
If you want to remove OpenX.exe from your computer, just go to Start > Control Panel > Add/Remove programs and select Router Online Version 2.1 from the list.
You may try contacting MangaBoxes.com - Indonesian Hentai Manga Project Team, the developer of OpenX.exe and ask for more information.