stream line tools description

Is it anywhere, list of all stream line tools with description?

Open the tool search window and in the upper ComboBox you can choose a category. Select "Streamline Basic Tools" at the very bottom. Leave the search field empty. Now you got a list with supposedly all streamline basic tools of which streamline tools can be comprised of. If you hover over these you'll get the description in the dark part of the window.

Where I can open this window - tool search window?
You mean Customize tools? If yes In dark part just a couple of words

In the menu bar go to 'View->Windows->Tool Search Window'. I use it all the time. There's also a right click menu in this window which enables you to customize the tools.

Thank you!