What are the best tools for SEO?

Apart from google free tools.

I am using Alexa traffic ranking and SEO quack extensions for SEO.

Ahrefs. Used for: Research and Analysis.
seobility. Used for: SEO Audit.
Long Tail Pro. Used for: Keyword Research.
SEM Rush. Used for: Keyword + Competitor Research.
Pitchbox. Used for: Outreach.
SEOquake. Used for: Competitor Research.
Seed Keywords.
SEOptimer.

Used Google webmaster tool, Google analytics tool, Google adwords for keyword searching, SEO spyglass tools and many more.

There are a lot of best SEO tools streaming on Google you can you get them in Google in one view.

You can use seopowersuite.