Some addons are standalone, and are able to run without any additional addons being installed; others can require certain other addons to be installed to work at all, or integrate with other addons to provide additional functionality. Collections of addons that have been put together to form a coherent user interface are sometimes referred to as UIs.
I dont know why i havent posted this earlier but i have been using Zygor for more then 2 years now and i simply love it! Worth every penny i paid for it. Speeds up leveling process and makes it pain free. And when your max level fun is not over and Zygor will help you every step of the way whether its Reputation grind, daily quests or achievements its brilliant.
A handful of us donated to Whoknowsit to so he could buy ALL the upgraded guides for MoP for all of us. That was an investment into THIS community not into torrents or into any other. We want it to remain safe for us to continue to use. Whoknowsit is smart enough to know what to look for to take out Zygors' tracking info, but he knows he is NOT perfect. That is why he is STILL careful.
Besides registry cleaner, it is also necessary to perform a defrag for your computer hard drive regularly, which is not only a good way to optimize your computer system's structure, but also can help you clean those fragments created in the incomplete program removal. There is a specific computer defrag utility available on the Windows operating system that enables the computer user to perform a defrag for the computer disk, or you can choose a free third party defrag tool like Auslogics Disk Defrag that opimize your computer disk in a quicker and more effective way.