MCEdit - MCEdit is an open source world editor for the popular game Minecraft.
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.
WorldGuard - Minecraft Plugin - WorldGuard is a powerful plugin with a large bag of tricks for server owners, server map makers, regular survival servers, and everyone in between!
Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
GriefPrevention - Minecraft Server Plugin - Stop responding to grief and prevent it instead. Grief Prevention will solve your grief problems without a roster of trained administrators, without 10 different anti-grief plugins, and without disabling any standard game features.
XYplorer - File Manager for Windows