Google keyword planner is the best tool for analysis keywords.

Google adwords

Google analysis is one of the best tool.

I've been using Adwords KW planner + Long Tail Pro. It's probably the best combination you can get.
Look here, this might help you: bestkeywordtool.info

I use google adwords and google trends

semrush and google keyword planner are best.

Google keyword planner tool is the best for analysis the keyword.

Google AdWords Keyword Planner Tool is best tool for keyword research.

Regards,
Mazakmasti in

For ads campaign purposes I believe that the best tool would be Google Keyword Planner and SEMrush.

Google Adwords