About
Software that outlives its infrastructure.
Quatrain Core is a long-term bet on open, composable, lifecycle-aware business software.
Most business software is stuck between rigid, monolithic suites and fragile, no-code prototypes that crumble at scale. Quatrain Core sits between the two: opinionated primitives that scale, exposed both to developers and to domain experts.
Every brick is open source under AGPL-v3-only. We believe the systems that orchestrate organizations should be inspectable, forkable, and free.
The ecosystem lives across three monorepos on GitHub. Roadmap, design docs and releases happen in the open.
The reference documentation is regenerated every night by a GitHub Action and published at doc.quatrain.community/core, so it always mirrors the current state of the code.