Playing D&D for as long as I have leads you to some interesting corners of the web, and some fascinating tools people have put together over the years. Here are some of my favorites.

GameTable
Nobody should play D&D online without a tool like GameTable. It may not be the best, or have the most features, but it’s free, it works, and it has enough features to facilitate gaming without becoming cluttered or cumbersome.

Donjon Dungeon Generator
This genius site has saved many a session when the PCs took an unexpected turn and I had to have a map and a dungeon with no time to prepare. It’s also given me inspiration when I hit a dead end in design and needed that little something extra to come up with something new.

Ars Tali Games
A d100 system being cooked up by a talented team. They’ve got some great ideas and are dedicated toward producing a captivating new system. Give them a look-see.