u/adwolesi

LuaCAD models solids in Lua rather than the OpenSCAD language, with operator overloading for CSG (a + b, a - b, a * b). It ships with a CLI and a desktop app, including a preview area and a text editor.

It’s fully open source and you can find the repo here: https://github.com/ad-si/LuaCAD

I've always been a big fan of OpenSCAD, but the SCAD language itself is unfortunately quite cobbled-together and is a very poorly designed programming language.

LuaCAD takes all the good parts of OpenSCAD and combines them with Lua. It has now completely replaced OpenSCAD for me, and I think it provides a better experience than OpenSCAD for all use cases. I'd love to hear any reasons why LuaCAD won't fully replace OpenSCAD for you!

Tech stack:

• It's implemented in Rust and uses mlua (https://github.com/mlua-rs/mlua) to execute the Lua code.
• Uses OpenCSG (https://opencsg.org) for fast and correct rendering of the 3D models (like OpenSCAD)
• Uses Manifold (https://github.com/elalish/manifold) to create the manifold triangle meshes
• Native support for all BOSL2 functions (i.e. implemented in Rust for better performance)

Woxi is a free open source interpreter for the Wolfram Language, written in Rust. The guiding rule of the project: whatever it implements must produce exactly the same output as wolframscript / Mathematica — the test suite (26'000+ unit tests) compares against it directly.

Version 0.3.0 is out now. Highlights since 0.2.0:

• Many Wolfram Demonstrations now run end to end in Woxi Studio, the included native notebook editor for .nb files — still far from all of them, but dozens (Kepler's Second Law, Parabolic Mirror, Doyle Spirals, …) serve as end-to-end tests. Manipulate covers a good part of the Demonstrations control vocabulary (interactive Locators, Trigger, Button, SetterBar, PopupMenu, controls nested in TabView/Grid, dependent controls, TrackedSymbols, Animate bodies, …), and typeset notebook input is read back as code.
• Plotting conformance: Automatic ticks now match Wolfram's algorithm, list plots grew Around error bars, Callout, Filling, PlotMarkers and friends, plus new ComplexListPlot and ListLinePlot3D.
• CAS: more Integrate/D/Series/Limit coverage, LinearProgramming with an exact simplex solver, NonlinearModelFit, Reduce over higher-degree polynomial inequalities, RootReduce, and many canonical-ordering fixes so results print exactly as wolframscript prints them.
• Windows is now a supported platform, and every release ships prebuilt binaries for Linux, macOS, and Windows.

Try it without installing anything in our playground and JupyterLite instance in the browser: https://woxi.ad-si.com

Install: cargo install woxi, pip install woxi (Python bindings), or npm install woxi-wasm. Full changelog: https://github.com/ad-si/Woxi/blob/main/changelog.md

If Woxi is useful to you, I'm now accepting donations on GitHub: https://github.com/sponsors/ad-si I hope to receive enough support to keep the project going for a long time, and to eventually reach full parity with Wolfram's implementation.

I wrote the visualization code in Wolfram Language and used Woxi to execute it.

Here is the code.

The data is loaded from github.com/openfootball/worldcup.json

Every time I open a CSV in Excel or Numbers it tries to be smart. Leading zeros gone, anything that vaguely looks like a date becomes one, and then you save and your file is wrecked. And the alternative is editing raw commas in a text editor.

So I wrote AirCSV. It's a small Mac app that shows the file as a grid and otherwise leaves it alone. What you see in a cell is literally what's in the file.

It does the things you'd expect: arrow key navigation, double click to edit, select ranges with shift+click, copy/paste whole rows or columns, drag rows and columns around to reorder them, undo/redo.

It's free and open source and you can get it here: https://github.com/Airsequel/AirCSV

Let me know if everything works for you and if there's something you're missing! 😊