D100 Open

A free, open-source character manager for d100 roleplaying games. Build characters, run groups, and roll dice — all in one place.

Step-by-step wizard, single-page builder, or fully random generation. Species, cultures, careers, skills, spells — all handled.

Instantly create NPCs at any competence level. Perfect for GMs who need a quick foe or ally mid-session.

Organize parties, share characters, and roll dice in real time. Hidden rolls stay hidden — only the GM and roller see the result.

Plug-in ruleset system with support for different combat styles, hit-point models, magic traditions, and more.

Browse and manage creatures with full stat blocks. Ready to drop into any encounter.

Track guilds, cults, regional powers, and mundane organizations your characters belong to.

Built for Mythras and Mythras-based settings, but flexible enough for d100 skill-based BRP variants.

Run your own instance with docker compose. Own your data, play offline, customize everything.