Roll20 - Roll20 is a suite of easy-to-use digital tools that expand pen-and-paper gameplay.
G2A - Enjoy the vast offer of Steam, Origin, Uplay, Battle.net, GOG, PSN and XBOX CD-Keys at the most attractive prices on the market. Don’t overpay – buy cheap on G2A.COM!
Fantasy Grounds - Fantasy Grounds is a virtual tabletop to help facilitate play of tabletop-style role-playing games...
Green Man Gaming - A digital distributor for video games.
Astral Tabletop - Create, host, and manage your tabletop role-playing games — online or in person
GOG.com - DRM-free game store, selling both new and old titles. No clients required.