# Meadows: a small language for executable stock-and-flow diagrams

A new project called Meadows introduces a small programming language for building stock-and-flow diagrams — the system-dynamics models used to simulate stocks, flows, and feedback loops — that can actually run rather than only be drawn. It was shared on Hacker News, drawing interest from developers and modelers. Text-based, executable models matter because they can be versioned, diffed, and scripted, unlike the GUI-bound tools that dominate system dynamics software.

**Importance:** 2/5

## Sources

### Technology
- [Hacker News](https://lorezzed.github.io/meadows/) — Fri, 09 Oct 2026 12:29:40 +0000