For game masters running long campaigns
Paste your session notes. DM Companion turns them into a campaign wiki of plain markdown files, and tracks every fact your players have learned and the session they learned it in.
In development. The screens on this page are design previews of what we're building for early access.
Runs the river ferry between the wharf and the Lock Gates.
Favor settled: fare cut to 20gp. The party now owes him one.
Informs for The Gilded Hand.
Blackmailed by Captain Roske over a drowned passenger.
After the session
Paste typed notes after the session. Nothing changes in your wiki until you accept it, and every fact keeps a link to the note it came from.
Shorthand, typos, half-sentences. Names get matched to pages you already have.
New facts for existing pages, new NPCs saved as drafts, and a question when something is ambiguous. You choose what's canon and who can see it.
Loose threads, who's likely to show up, and what each of them wants, on one screen.
He's the only ferryman in the River District, and he was owed money in Session 4.
Favor settled: fare cut to 20gp. The party now owes him one.
What the party knows · Planned
Every fact has its own visibility. Reveal one at the table and it shows up in the player journal, marked with the session where the party learned it. The rest stays yours.
What you see
Runs the river ferry between the wharf and the Lock Gates.
Favor settled: fare cut to 20gp. The party now owes him one.
Informs for The Gilded Hand.
Blackmailed by Captain Roske over a drowned passenger.
What your players see
This journal shows only what your party has learned.
What we're building
DM Companion is in development. These are the features planned for early access.
NPCs, locations, factions, items, quests, and lore, connected with [[links]] the way you'd write them by hand.
Ask about your world and every answer names the pages and sessions it came from. If it isn't in your notes, it says so.
Generated NPCs, encounters, and descriptions are marked as drafts until you make them canon.
Open threads, NPCs likely to appear, and who owes whom, pulled together before game night.
Works from the notes you already take. Good for in-person tables and groups that don't want their sessions recorded.
Mark any single fact DM-only. It stays out of the player journal and out of any answer a player can see.
Your files · Planned
Every page is a markdown file that opens in Obsidian or any editor, with its facts and sources included. Export whenever you like. Leaving DM Companion never means losing your campaign.
About
DM Companion is an independent software company based in Columbus, Ohio, founded by Chad, a game master building the tool he wanted for his own table.
DM Companion is in development and opening to a small group of DMs first. Write to chad@dmcompanion.com with questions, partnership ideas, or press.
We're opening DM Companion to a small group of game masters first. Tell us a little about your table and we'll be in touch.
Questions? Email chad@dmcompanion.com