# fougue/mayo

> Open-source 3D CAD viewer and converter built on Qt and OpenCascade that reads and writes STEP, IGES, STL, BREP, glTF and other CAD formats. Aimed at engineers and developers who need to view, measure and batch-convert 3D models on Windows, Linux and macOS.

- Magnitude: 0.6 out of 10 — Steady
- Stars: 2,236 total · +0 stars on 2026-09-28 (UTC), ≈ 1 by evening
- Star trust: star growth looks organic
- Category: Developer tools · Language: C++ · License: BSD-2-Clause · Created: 2016-07-29 · Last push: 2026-09-25
- GitHub: https://github.com/fougue/mayo · Page: https://gitnova.dev/en/r/fougue/mayo

## Useful for

- Open a STEP assembly and measure lengths, angles and bounding boxes of parts
- Batch-convert CAD files from STEP to STL or glTF via the command-line utility
- Enable clip planes and explode the assembly to inspect internal parts of a complex model

## Why it’s here

- A steady background without notable changes.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 366
- Issues and pull requests: 394
- Watchers: 60
- Average over the last week: 1 per day
- Usual pace: 5 per day
- Latest release: v0.10.0 (2026-07-03)

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-10-04 … 2026-11-02: None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None

## Magnitude by day, last 12 days

09-17 1.6, 09-18 1.8, 09-19 1.4, 09-20 1.0, 09-21 0.9, 09-22 0.9, 09-23 1.0, 09-24 0.6, 09-25 0.1, 09-26 0.1, 09-27 0.1, 09-28 0.6

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-09-28 10:29 UTC, updated every 30 minutes.