Mecabricks is a Lego building software like LeoCAD or Lego Digital Designer but online. If you want to make models and save them, I recommend creating an account, but Mecabricks does not require an account. It has an in-built animation and rendering feature too.
Mecabricks
![](https://carlksatriasinha.com/wp-content/uploads/2021/08/Screenshot-from-2021-08-12-16-28-11-1200x675.png)