which is the best SEO software

Hi to you all, I am an article writer and would need to rank my articles. I have been looking for free SEO softwares where I can rank my articles. If any one has an Idea you can reply to this. I will also accept a paid software if its worth it. Thanks

Fact 1 : No free software will rank your articles when paid softwares are struggling to do it.
Fact 2 : No offence but with your grammar, Google will rank your articles much deeper than what you expect.
Fact 3 : Just articles alone isn't enough to rank. There's more to it. Search BHW for on-site SEO guide and then off-site SEO guide.