Thanks to the large WordPress community there are a lot of WordPress plugins available. The downside though is that you normally have to try out a few different plugins before you find the one that meets your needs.
To save others the same pain I’ve collated the following list of plugins that I use frequently across a number of websites.
All in One SEO Pack
Extensive options for adding SEO to your website. Optimisations can be made globally and on a post/page level.