Foundry Virtual Tabletop is described as 'Foundry VTT is a standalone application built for experiencing multiplayer tabletop RPGs using a feature-rich and modern self-hosted application where your players connect directly through the browser' and is a virtual tabletop in the games category. There are more than 25 games similar to Foundry Virtual Tabletop for a variety of platforms, including Web-based, Windows, Mac, Android and iPhone apps. The best Foundry Virtual Tabletop alternative is Roll20, which is free. Other Foundry Virtual Tabletop like games are DiceRight, Alchemy VTTRPG, Linwood Setonix and Owlbear Rodeo.
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!
DiceRight is an online platform for playing tabletop games. It tracks game aspects like turns and damage to speed up gameplay and eliminate tedious elements. The platform offers extensive customization, including character classes, races, game currencies, and languages.
Alchemy is a Virtual Tabletop (VTT) with a focus on cinematic elements, like music and environmental backgrounds, motion overlays, and more.
Owlbear Rodeo is an attempt to make a web app to run tabletop encounters without the complicated setup process needed for other VTTs.
Cauldron VTT is a web application to run tabletop role playing games, like Dungeons & Dragons and Pathfinder, online.
A VTT with DM tools for 5th edition D&D. Includes an initiative tracker, random table support, challenge rating calculators and more.
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.
Role Gate is a platform for playing tabletop RPGs through chat, allowing flexible participation at your own pace, with features like separated in-character/out-of-character chat, character sheet editor, interactive helpers, and party splitting.
MapTool is an online, multiuser, networked, graphical, interactive, programmable virtual tabletop. Requires Java 6+. It can be used for face-to-face play, or Internet role-playing in real time even if your players are on the other side of the world.
Battlegrounds: RPG Edition (aka BRPG) is virtual tabletop software designed to enhance your pen-and-paper roleplaying games, whether your players are in the same room, or on the other side of the world.
gTove is a lightweight web application to simulate a virtual tabletop. Multiple maps and standee-style miniatures can be placed on the tabletop, and everyone connected to the same tabletop can see them and move the miniatures around.
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Roll20 could be considered the industry standard of VTTs. It has its flaws and is quite limited compared to Foundry VTT but if you want to get a group of friends to gather around a virtual tabletop, Roll20 makes that easy.