Open Source SketchUp Alternatives

FreeCAD is a rich program for mechanical components or structures. There is more of a learning curve than Sketchup but can create professional drawings, analysis, simulation, assemblies, and more.

Love this software for 3d printing.

FreeCAD is a lot more difficult to use

I use both and they are not alternatives. Sktechup excels at drawing things realtime (to think in 3D). Freecad is cumbersome for that. Sketchup cannot do easily parametric modelling (with constraints, etc) or print blueprints. It only deals with triangles. Sketchup is easy to learn while Freecad has a steep learning curve.

You can't go in and draw parts as like Sketchup - not at all the same.

Sketchup is not a CAD software

Not the same audience. Just try to build a pyramid with FreeCAD and you will understand how far it is from sketchup.

Good generic 3D modeller, but not as suited for quick space modelling.

It's a bit complicated but way more powerful booleans, arrays. You can draw shapes just like in SU. Get comfortable with the snapping system. Try measureit-arch , archipack, cad-transform free addons for a similar experience. There is also construction lines for like 10USD which adds the ability to draw lines and rectangles.

Sketch up is sold on how easy it is to use. Blender is god level complex.

Sketch up is more geared for designing a table or a house. Blender seem more like creation a Pixar animated movie.

Another comment says Blender is "God level complex". I'm gonna get hate for saying this, but I think "hell-level complex" is more like it. I respect that it's an amazing and powerful (insular) community-driven project, but intuitive and inviting it is not. Thus the fork "B for Artists", which seems promising.

Too complex. "3D for everyone" is Sketchup's tagline.

Blender is a graphic artist's tool. SketchUp is an architect's tool. SketchUp is very intuitive, but Blender is very complicated and not intuitive at all.

If you are looking for something related to home design, SweetHome3D is an excellent solution. But it is not a general purpose cad suite.

Very easy to learn. Has a huge library of "furniture" and other assets developed and shared by users. Has 3D photo's and video virtual tours. May not be that great for detailed framing plans and elevations.

Sketchup is far more generic and can be used for creating 3D printing models. Sweet Home 3D is a targeted application designed for laying out house designs.

Its not general purpose, its to specific to be an alternative to virtually any other CAD program

Not a general purpose CAD program

SH3D is great for home projects but lacks a lot when compared to Sketchup. Simply don't share enough features to be comparable.

Sketchup is a more generic 3D modeller. Sweet Home 3D is a tool for house and furniture designs.

Completely different scope. SketchUp is a general modeller with a hard surface / architecture focus while MakeHuman is strictly for creating realistic human models.

The manner in which you draw a shape, enter dimensions, and push/pull a flat plane shape are the most similar to the SketchUp workflow of any 3D/CAD program I have used.