Digital D20 is described as 'Digital d20 is a platform for distributing and playing adventures in a new digital format that aims to change the way the adventures are prepared and ran, with the help of new technologies, but maintaining the romanticism of paper and pencil'. There are more than 10 games similar to Digital D20 for a variety of platforms, including Online / Web-based, Windows, Mac, Android and iPhone. The best alternative is Roll20, which is free. Other Digital D20 like games are D&D Beyond (Freemium), Fantasy Grounds (Paid), Astral Tabletop (Freemium) and Beyond Tabletop (Free).
Roll20 is the free, easy way to play tabletop games (such as pen and paper RPGs) online with others. It's completely web-based, so it runs right in your browser. It supports video and voice chat, background music, character sheets, a massive art library, and more!
Beyond Tabletop is a set of tools for RPG players with easy-to-use online character sheets and maps. Subscription-free and designed to be used on all devices online. Currently offering a battle map and character sheets for Pathfinder and D&D 5e.
Rolisteam helps you to manage tabletop role playing games with remote friends/players. It provides many features to share maps, pictures and it also includes tool to communicate with your friends/players.
TaleSpire is an online, digital, graphical way of playing classic P&P Role-playing games with your friends. As a DM, build your campaign in-game and invite your players for sessions. To your left you can watch one of our streams to see for yourself.
Dungeons with friends lets you easily set up, DM, and play tabletop roleplaying games from anywhere on your mobile phone. This virtual table top is designed for asynchronous play - so you don't have to find a time that works for all of your players.
epicGM is a cross-platform tool offering features to track campaign notes, compendiums and a battle map. It brings a complete suite of tools to help you run your games smoothly so you can focus on bringing the best game experience to your friends and players!