Bukkit

DeathCountdown has its own donation features built in, where, it can execute commands from the console to give players more time, or players can purchase a 'revive package' which lets them revive if their time reaches 0. To setup donations, make sure that your donation supplier (e.g. Buycraft/Donationcraft) sends the /dc give <player> <time>, or /dc setrevivable <player> true.