Billing: AWBS, WHMCS, HostBill, TheHostingTool, AccountLab Plus and Blesta (note: claim by billing’s author).OS: Redhat/CentOS 5 and 6 (32bit and 64bit) or their variants.Its nice to see kloxo getting some fixes and going forward. Kloxo MR not only fixes the bugs of Kloxo but it has many additional features like the ability to switch to Nginx server. Kloxo-MR is a fork of original LXCenter’s kloxo project and its developed by Mustafa Ramadan, hence the “MR”.