seDirector - Source engine control panel & management software for Windows. Manage your srcds.exe servers with ease! Auto-updater, crash notifier, addon manager, notifications, and more!

Motion Firefox - All-in-one time management tool in Firefox

Gametron.io - Gametron is a new game server control panel for provisioning and managing Minecraft servers and more.

Task Muncher - Task Muncher is a cross-platform and web-based application that is designed to organize and keep the track of everything and focus on munching the weekly tasks.

Pufferpanel - It's made for hosting your Minecraft server. It's open source.

Taskable - Using multiple work apps leads to tons of context switching, breaking flow and killing productivity.