The official name on the concrete5.org marketplace will be "Devoda SEO". Expect that to be there somewhere this month (June 2016). This Add-On should do all the SEO you need for a site.
Of course, concrete5 does some little things SEO wise already. That's why I had to think hard and long how to get some changes of mine in. I've been making adjustments to a core file and overriding that within the Add-On (concrete/elements/header_required.php, for those who wanna know). This works very smooth. Overriding core files is "not done" though, so I am trying to get these changes into the core of concrete5. To do so, one has to do a Pull Request on GitHub. And that's exactly what I did - Take a look at the header_required Pull Request.
So it's been some pretty rough weeks/months lately. Getting (client) projects done, developing this Add-On, spending quality time with my lovely girlfriend (and family).
Hope you guys are excited as I am and look forward to the release. When you have questions, contact me using one of the available channels!