Raven's SEO Tools
Raven has a full line of SEO tools that are well regarded within the industry. One of the really nice features is that the tools allow very fine-grained permissions and you can add your own logos and even use your own domain names to get to them. This lets you provide a smooth experience to your own users and clients if you are a third-party firm.
Justin James is an OutSystems MVP, architect, and developer with expertise in SaaS applications and enterprise applications.