I’m using Fusion360, and I dislike it for a lot of reasons, but it’s easy to use. I tried FreeCAD, but it was very janky in comparison. Shapr3D was surprisingly good, but there’s no way I’m paying monthly for my hobby usage. I need precision prints, so I can’t just use Blender or similar.
Is there some magical unicorn software I’m not finding?
Some of it will depend on what your goals and OS are. OnShape is pretty good, and being in-browser it’s inherently cross-platform. BUT… their free tier has the single worst licensing setup imaginable: your designs are public, you can’t make a single cent off them, BUT any paying customer (and arguably any other user at all) can. They also jump straight from free to enterprise pricing.
Fusion you know. Licensewise, the free version gives you a small grace zone to make a couple of bucks without issues, and you can at elast keep your designs to yourself.
SolidWorks has an extremely heavy and unfriendly web interface, but their in-browser parametric 3D CAD is better than it used to be, and you can get a maker plan for $25-$50 a year that gives you a little wiggle room to sell a few trinkets and not get blasted if someone or something rats you out to Dassault. If you’re on Windows, you’ll also be able to install proper SolidWorks (though files will be watermarked to limit them to a hobbyist/maker install.
Solid Edge is a bit clunkier than (real) SolidWorks or Fusion, is windows only, and there’s also a doughnut hole for limited commercial use, but it’s the full software and it’s free as in beer.
Since they cleared up the worst of the toponaming issue, FreeCAD is way better than it used to be. I still feel like the moment you have to do anything more than draw/extrude/fillet, then all the clunkiness comes back, though. It’s a brilliant project in its way, but it remains a mixed bag, shall we say.
I paid for a permanent license for my version of Alibre Design, and that’s what I generally use. It’s somewhere between SolidEdge and Solidworks in user-friendliness, and more than powerful enough for my keyboards and random widgets. I also do like the simplicity of owning my license and therefore fully controlling my designs, but it wasn’t cheap, probably two years’ worth of monthly payments on the Shapr3D usable tier or the fancy Fusion tier, so I will probably keep plugging along for a while yet. They have a more basic product (Atom) that’s missing some fairly useful features, but is still parametric and is rather cheap. It’s also all Windows only, though I keep hearing the next version will play nice with Wine/Proton. For now, my investment with Alibre is pretty much THE reason I occasionally boot back into Windows.
TinkerCAD (opwned by Autodesk like Fusion is) is great for certain things, and the “make shape, set solid or hole” workflow is much more intuitive for the abject beginner, but if you’re on Fusion you’re already past the need for it, i’d think.
There are other players (Rhino, Plasticity, DesignSpark, SolveSpace, among others), but Fusion, Shapr3D (for single parts only, no assemblies),OnShape, SolidEdge, FreeCAD, Alibre, and Solidworks pretty much cover mechanical CAD that’s (1) full-featured, (2) 3D, (3) got parametric history and (4) available with usable free or maker versions.