Vesta Control Panel - – What I love about Vesta is that it's fast and easy to use
Open Game Panel - OGP is a game server control panel.
Hepsia - Hepsia is probably the most advanced web hosting control panel for managing multiple domains and hosting related issues.
TCAdmin - With it’s flexible design and powerful features TCAdmin© was designed from the ground up to...
Virtualmin - It includes numerous features not in the GPL version (like script installers, resellers, HTML editor, an improved UI, mobile access, spam and virus filtering).
Pufferpanel - It's made for hosting your Minecraft server. It's open source.