The All In One SEO Plugin was created back in 2007, almost 10 years ago, and is one of the most downloaded wordpress plugins to date at 30,000,000+ downloads. Now not all of those 30million are active, but it still goes to show you that it's a powerful plugin if so many people trust it.
There are a few SEO plugins out there that can do what the All In One SEO Plugin can do, but this plugin seems to have a big following of dedicated users. That's a good thing if you're the owners of the plugin and a bad thing if you're the competition.
I've used the All In One SEO Plugin a few times and here's what I can say about it...
The XML Sitemap - You can submit your sitemap to Google and Bing to help the indexing rates and over all rankings of your website which is very convenient.
Google Analytics - This plugin supports Google Analytics which is amazing because having it conflict with analytics would be a nightmare.
SEO and Custom Post Types - This plugin helps you improve your on page optimization by walking you through what needs to be done. This is a nice feature for newcomers and veterans to SEO.
The Pings - This plugin automatically pings Google and Bing to let them know about any new content or changes to your pages so the spiders come crawling to check it out.
eCommerce - The All In One SEO Plugin says it's the only SEO plugin that can integrate with eCommerce type websites including WooCommerce.
Security - There is a built in security system with All In One SEO so that you don't have to worry as much. I don't rely on their security feature because I use other plugins for that
Titles - This plugin will automatically optimize your titles for the search engines to help out your rankings.
Meta tags - This plugin will automatically generat your meta tags for you so you don't have to. I like to customize most of mine, but the auto generation is nice at times
Duplicate Content - Helps you avoid any duplicate content before you post.
Beginner Friendly - This plugin works right after you install it. You don't even need to configure anything if you don't want to.
Veteran Friendly - You can customize anything you want after the initial install. This is a more advanced feature since you need to know a bit about SEO to use all the functions the right way.
Plugin Friendly - A lot of user like this SEO plugin for the simple fact that it's so friendly with other plugins. No complications here! And if you do find a complication you can email the support team and they usually update the plugin so it works for you
Multi Lingual - This plugin can be translated into over 57 different languages. Makes sense as to why it's been downloaded over 30,000,000 times, it can target anyone lol.
If you want a good all around SEO plugin, I would suggest checking out the All In One SEO Plugin. It's a free plugin and you don't have to risk anything to try it out