Apps similar to Vers include Foundry Virtual Tabletop. It's paid, but PlanarAlly and Cauldron VTT are free. Other options are Fantasy Grounds, Tableplop, MapTool and Roll20. In total there are eight Virtual Tabletops like Vers for the web, Windows, Linux, Mac and iPad.
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.
United States
PlanarAlly is a web tool that adds virtual battlemaps with various extras to your D&D toolbox. Self hosting, Offline support, Simple layers, Infinite canvas, Dynamic lighting, Player vision, Initiative tracker. Free to use and is open source.
Fantasy Grounds is a virtual tabletop to help facilitate play of tabletop-style role-playing games online with a GM (game master) and one or more players. It replicates what you would traditionally do around a physical table, such as rolling dice, managing character sheets...
United States
Cauldron VTT is a web application to run tabletop role playing games, like Dungeons & Dragons and Pathfinder, online.
Netherlands
EU
Tableplop is an easy to learn, fun to use virtual tabletop for role playing games. It includes everything you need to play TTRPGs remote apart from audio chat and works great on mobiles and computers.
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.
United States
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!
United States
Owlbear Rodeo is an attempt to make a web app to run tabletop encounters without the complicated setup process needed for other VTTs.
