Neverkin
Free open-source worldbuilding wiki, timeline and mindmap for writers and GMs
Neverkin is a solo hobby project — a wiki-style tool for characters, events, articles, custom calendars, mindmaps and a visual timeline, with real-time collaborative editing for writing groups or TTRPG tables. It's GPL-3.0 and self-hostable via Docker/Node.js, with a hosted web version and desktop app, and is free with no paywalls or credit cards accepted, by the developer's own account. It also connects to an AI assistant via a built-in MCP server for note-taking.

What holds up
- +Free and open source (GPL-3.0) — self-host it or use the hosted version at no cost
- +No paywalls or credit cards by design, stated as a firm commitment, not a launch promo
- +Real-time collaborative editing, built for writing groups and TTRPG tables
Mind the limits
- −Built and maintained by one solo developer as a hobby project, no team behind it
- −No commercial support or SLA — fixes happen on the maintainer's own schedule
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