StructoFox

 StructoFox 🦊 — Flow · Struct · Code

Plan and build code from diagrams.
Easily Create and Export flowcharts and structograms into images  or printable files (.pdf, .tif) up to A0 / B0 format.

StructoFox is also a code-planning and generation tool. You design software visually — classes and their relationships, then the logic of each function as a flowchart (Programmablaufplan, DIN 66001) or a structogram (Nassi-Shneiderman, DIN 66261) — and StructoFox turns it into real, buildable source code across 13 languages. 

The deterministic parts (structure, signatures, structograms) generate code with no AI. An optional AI plugin fills only the gaps that can't be derived — and can be left out entirely.

What you can do

- Model your structure — Namespaces, Classes, Structs, Interfaces, Enums, Functions and Objects, each with fields, typed methods, enum values and data ports. Arrange them as UML-style cards on free boards; wire ports, set inheritance, add type links, bend connections with reroute nodes, and drop free text notes anywhere.

- Draw the logic — DIN-compliant flowchart and structogram editors, with AI-free Visual-Studio-style autocomplete.

- Diagram → code, deterministically — a flowchart converts to a structogram with one button (which also flags unstructurable jumps); the structogram then generates the method body with no AI.

- Print / Export composer — lay out diagrams, headers and rich-text boxes on real paper pages and export to PDF with searchable text, TIFF (multi-page) or PNG.

- Generate buildable projects — deterministic skeletons in 13 languages, multi-file for 12 of them. Optionally let an AI model fill the bodies.

AI is optional

The whole deterministic pipeline runs without any AI. The AI code generation is a removable plugin. When present, it drives local (Ollama, LM Studio, etc) or cloud models to fill method bodies into the deterministic skeleton. API keys live only in your OS's native secret store, never in a file.

Themes & ecosystem

Themed with the OXSUIT standard — drop `.oxsuit` files into `Themes/`. Design your own with the free [OXSUIT Theminator](https://github.com/Doombug75/Theminator). Also the code-planning companion to [ClaudetRelay](https://github.com/Doombug75/ClaudetRelay); runs fully standalone.

Requirements

- Windows 10/11 (x64) — needs the free .NET 10 Desktop Runtime. 

- Linux (x64) and macOS 12+ (Intel) — self-contained. macOS build is unsigned & currently untested.

Source & releases: https://github.com/StructoFox/StructoFox · MIT licensed.