The author is mm_ASH

Official Site I help to upload to github

Smart-Core

Tools For Unity Developers (Smart Bindings,Smart Components,Smart Extensions)

Smart Core This asset was made for level and game designers to speed up their daily work by providing wide range of editor interface improvements.

Customizable toolbars to put:

• Frequently used prefabs
• Frequently used visual Editor commands

More Editor improvements:

• Transform editor extension
• Hierarchy extension
• Event editors extension
• Shortcuts extension

Framework components:

• Canvas manager
• Coroutines manager
• Video | Documentation | Asset Store Free icons pack with additional commands