If you are planning changes in your apartment, but the CAD system (ArchiCAD, AutoCAD) is not what you constantly face, then this service is what you need.
Roomle allows you to create a plan of an apartment or individual rooms, arrange furniture, view a rendered image and, of course, share the results.
Yes, it is not the only online service of its kind, not to mention simple programs, but I really liked its intuitiveness and ease of use. A large library of ready-made interior elements: furniture, windows, doors, appliances, plants, and even ... animals :)
It has all the advantages of online services. It is convenient, for example, to open a project during the day at work if an interesting thought comes to mind.
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Sample layout:

Elements of the engine and planning:

Selection of coating materials and wall colors:

The service is free, and even gives you the opportunity to use the platform on your site.