Still not able to manage tags in Craft 3?
Short answer is "no, this still isn't possible".

Longer answer is:


The Tag Manager plugin from Craft 2 will not be ported.
Pixel &amp; Tonic have mentioned the possibility of rolling that functionality into Craft's core.



  https://github.com/craftcms/cms/issues/820


So what can you do about it? Vote up this feature request!