Tools & Platforms

A portable, offline-first DM and worldbuilding tool. Build worlds, run sessions, share with others and play together, all in one app. License: CC BY-NC 4.0 · Free to use Everything core works **without an account**. You only need one to play online, publish to the marketplace, or download other users' content. /images/general-media/1791564204_7DEx9r3t.webp Worldbuilding - Era Timeline: Split your world's history into eras on a timeline bar and move between them. Each era keeps its own map, pins, nested location maps and day-by-day timeline pins linked to cards and sessions. You can show the same city before the war and after it. - Templates & Packages: Every world is built on a template (D&D 5e is built in) and pulls content from packages. A package is a bundle of cards you can install into any world, link to other packages, or share on the marketplace. Custom templates are coming. - Codex: Schema-driven cards for NPCs, monsters, spells, items, locations and more. Every reference is a tappable link. Pin cards to the top, preview any card with a long press, and search by name, tag, category or text. - World Map: Pins, grid and scale, drawing, fog of war, and nested maps you can walk into (districts, dungeons, taverns). - Mind Map: An infinite canvas with linked nodes, workspaces, freehand drawing and undo/redo. /images/general-media/1791564252_TB7zwrCp.webp Running the Session - Second Screen: Give the table its own view. Pop out a window onto a second monitor, cast to a TV or projector, or project into every connected player's app. You choose how battle maps, images, cards and PDFs go out. Fog of war and hidden tokens stay hidden. - Battle Map: The session screen *is* the map, with the encounter panel and event log on top. It has layers, fog of war, AoE templates, 5e diagonal rules, creature-sized tokens, shapes and text, a DM-only layer, hidden tokens, movement trails for the round, and two maps joined into one. - Combat Tracker: Initiative, HP (with hit-dice rolls), conditions, turn order and an event log. - 3D Dice: Dice roll across the screen with named styles. Skills and saving throws roll from the character sheet with one tap. - Soundpad: Layered ambience with gapless loops, fades and ready-made soundpacks. - PDF Library: PDFs kept inside the world, opened in tabs and shareable with players. /images/general-media/1791564292_BnuuXJTS.webp Characters - Full 5e rules: Species, class, subclass, background and feats fold into one sheet. Each sense, resistance, proficiency, trait and always-prepared spell shows where it came from. Also covers multiclassing, spell slots, class resources (Rage, Bardic Inspiration, sorcery points…), weapon mastery, and short and long rests. - Character Builder: Pick species, class, subclass, background, ability scores, skills, starting equipment and feats from the SRD and any installed pack. - Level-Up: HP, proficiency bonus and hit dice update automatically. ASIs, feats, subclass and spell picks wait as pending choices. /images/general-media/1791564330_JBRRDNZ4.webp Playing Online - Online worlds: Put a world, package or character online and it stays the same on every device you sign in on. Players see the pictures even when the DM is offline. - Players: Join with an invite code, claim a character, move your own token on your turn, and send dice rolls to the DM's log. Shared cards update when the DM edits them. - .dmtz files: Export a world, package or character to one file and import it anywhere. No account or network needed. Content - SRD 5.2.1: Built in and works offline. - 19 one-tap packs: Tome of Beasts (1–3, 2023), Creature Codex, Monstrous Menagerie, Black Flag SRD, Deep Magic, Tome of Heroes, Vault of Magic, Tal'Dorei and more. - Ready-made worlds: 99 Devils of Uzrah's Palace (Shadowdark), Army of the Damned, The Cold Bounty, and soon our own campaign Aegis Act . - Marketplace: Publish worlds, templates, packages and characters as versioned snapshots with content previews. - Social: Profiles, follows, an activity feed, direct and group chats, and game listings with applications.

Inkroll is a web platform for playing tabletop RPGs play-by-post: asynchronously, in written posts, on each player's own schedule, with a human gamemaster running the table. It sits between heavyweight real-time VTTs and plain forum software; the writing stays the point, but the platform actually understands characters, dice, secrets, and the GM's role instead of leaving them on the side. It is also, deliberately, a beautiful place to spend a campaign. Inkroll was built by play-by-post players who wanted the game to read as well as it plays: a calm, candlelit page of ink and parchment where posts get the space of a book, quoted speech and images are cleanly styled, and every table can choose the look and post layout that suit its story. The tools stay out of the way until the moment a hand reaches for them, so a session feels like reading and writing a novel with friends, not operating software. Dice are typed straight into a post, like {Perception:1d20+2}, rolled once on the server the moment the post is published, then frozen, with a per-post audit the whole table can see, so a result can never be edited or quietly re-rolled. Players post as their characters, with portraits, versioned character sheets, and quick stat updates (hit points, spell slots, conditions) committed together with the post. GMs get sealed passages delivered to exactly the players they choose, chapters, scene notes with a world map and a per-chapter battle map, and live updates with typing indicators and read markers, so an asynchronous table still feels alive. Long campaigns are first-class citizens: the Chronicle keeps a running recap of every chapter and every character met, and answers questions from the campaign's own posts, so a returning player or a newcomer catches up in minutes. And because a campaign written like a book deserves to become one, a finished game can be exported as a designed, print-ready PDF or EPUB. Games already in progress can be imported from Myth-Weavers or Discord with posts, characters, images, and dice results intact. Ready-made sheets cover D&D Fifth Edition, Pathfinder 2e, Call of Cthulhu, Shadowrun, Cortex Prime, and Grimwild, plus a system-agnostic option and a builder for custom rulesets with their own dice mechanics. New systems are also gladly added upon request.

Item Forge is a small free tool to help GMs to create printable item cards for their table. It is optimized for D&D and Shadowdark. You can quickly fill out the form and it will generate a nice card design. There are predefined templates in D&D, Shadowdark and printer friendly style. You can also use the custom template where you can design it with CSS yourself. There are various export options, from PDF to images and a backup as json. For quick sharing there is a publish option which gets you a link that you can share with other GMs. Item Forge is translated into 10 languages currently and keeps growing.

DiceCalc is a TTRPG dice managmeent system for players and GMs. Here's what it does: Roll all of a character's dice simultaneously — see every attack, save, skill, and modifier roll all at once via the Roll All mode with character tabs. Still reroll per macro — long-press any single roll to edit or reroll just that macro without rerolling the rest, even in Roll All mode. In-depth macro inspection — Roll Macro mode focuses on macro options, allowing players to inspect rolls, rename, edit, and sort the macro list. Sort order here is also preserved in Roll All mode. Cryptographically secure random number generation — higher unpredictability, more randomer. Sortable character tabs with up to 100 macros each — whether you're running or playing a campaign, organize by character, encounter, monster, game system, or any other way you like. Every major TTRPG dice mechanic in one app — keep high/low, target numbers (successes), botches, exploding dice, crit detection, multi-roll comma separation for staged (verification) rolls, and yes... push dice! Constraint validation with red-highlighted error feedback — pathological expressions are caught before they run, no infinite loops or broken math. Persistent 300-roll history with timestamps — every roll logged with full roll breakdown and no truncation. Tap-and-hold context menus throughout — edit, duplicate, delete, rename, reroll wherever it makes sense. Localized in 7 languages — English, Spanish, Portuguese, German, French, Italian, Polish, with complete in-app manuals for each. 14-page in-app user manual — every feature documented with examples, no need to leave the app. Supports Android 8.0 and above — runs on devices going back a decade. Custom QWERTY keyboard for macro names — with locale-specific diacritics via long-press. Independent horizontal scroll per output row — nerd out inspecting long expressions, results, and roll details without truncation. Also... I'm giving it away for free till 09/31/2026 11:59:59 (JST). Check the promo section of the website for details. Honest reviews are appreciated.

GM Assistant automates session notes for tabletop RPG game masters. Record your session however you like, then upload the audio to get structured session notes, NPCs, locations, and story recaps in minutes. No manual note-taking required. Works with any TTRPG system, including D&D 5e, Pathfinder, and Call of Cthulhu, and recaps can be shared with your players by link. Pay as you go or subscribe, your choice. GM Assistant documents your game; it never plays it. No AI-generated content in your campaign, never an AI game master, no training on your data, and your audio is deleted the moment processing finishes. Unlike generic meeting transcribers, GM Assistant is purpose-built for tabletop RPGs, producing the most accurate and detailed session notes you can get from a campaign recording.

HeroLog is a multifunctional, cross-platform application designed for tabletop RPG players and Game Masters. The app offers a wide range of tools to make role-playing games easier to manage, more organized, and more immersive. HeroLog is designed to be an all-in-one RPG companion, bringing multiple useful tools together in a single application.