I want know which one will be the best, secured, lite, easy and free web panel for a dynamic wordpress site to host on linode servers? I want to setup ubuntu+apache server with web panel for my wordpress site. But unable to figure out the best web panel. Plz help me out.
Interworx for a single domain is free. You can get it free from a place like LicenseCart. Sentora/zPanel is vulnerable; there's been reports of security holes. Whether or not those have been patched to date is unknown. But my suggestion is go for Interworx single domain if you're after a free panel.
Vesta. It's free, light on RAM and CPU, and highly secure. It's frequently updated. If you have a VPS or dedi, and want to know how to install it, have a look here.
There are many control panels available for Ubuntu, such as webmin, Vesta, ispconfig, ajenti, virtualmin. I would recommend you Vesta.
Virtualmin is the most used open source hosting control panel and one of the most secure. If you want a free control panel, Virtualmin hands down. Virtualmin is a Webmin module. Most of the other "free" hosting control panels have security issues unresolved. Stick to Virtualmin, you can't go wrong. Interworx is nice for a single domain. Free as well.