Reroll is described as 'digital character sheet app for 5e DnD that allows you to create and customise your characters in pixel art'. There are more than 10 alternatives to Reroll for a variety of platforms, including Windows, Online / Web-based, Mac, Linux and Android. The best alternative is Roll20, which is free. Other great apps like Reroll are D&D Beyond (Freemium), Fantasy Grounds (Paid), Astral Tabletop (Freemium) and Adventurer's Codex (Free, Open Source).
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.
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.
EpicTable is a virtual tabletop (sometimes referred to as a “VT”) that allows you and your friends to play your favorite pen-and-paper roleplaying games, regardless of whether you’re sitting across the table or across the world from one another.
DM Helpmate is an offline, downloadable DM (Dungeon Master) companion for Windows featuring an interactive database, links to spells and spell slots, attack and damage dice rolls, skill checks, filtering by parameters and tags and much more.
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!