This is a paid asset, but now you can download UniMerge for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
For more detail this asset from the Unity Asset Store: Click Here
UniMerge v1.11 (Latest version)
UniMerge v1.7.5
“If possible, please buy the package to support the developer”
Having trouble working on Unity assets (scenes and prefabs) as a team? Text-based merge tools not cutting it for scenes and prefabs? Looking for a merge/diff tool in Unity? We have the answer!
Introducing UniMerge: an editor extension visually for merging GameObjects!
Confused? Check out our demo!
Update: I gave a talk about UniMerge at Unite!
UniMerge provides a friendly visual interface for interactively merging hugely complex scenes or scene objects.
Color Coded Differences: Objects that are different are highlighted red for visual merging. The background changes to green instantly once conflict is resolved.
Filter Component Types: Only care about one type of component? Filter out the rest and exclude them from the comparison.
Intelligent Reference Copy: References maintained when copying from one object to the other.
Isolate Differences: At the press of a button, the tool will expand all objects containing differences.
Scene Settings Compare: The Scene Merge window will show a list of editable Render settings, Lightmap settings, NavMesh bake settings, etc. with copy arrows to compare between scenes
New! Large Scene Support: Tested on scenes of up to 50,000 objects!
Check out the full documentation on the Unify wiki.