After 2+ years of research into content management systems and how they function with search engine optimization, Pixelsilk has launched their CMS platform that both addresses and complements these requirements.
Pixelsilk is a Search Engine Optimization (SEO) provider and is confident that their new system is "not only SEO-friendly, but truly meets the standard of SEO Best Practices."
From the announcement:
Pixelsilk is a scalable, Web-based CMS that provides SEO, marketing and Web development teams with the features they need to maximize their online initiatives and gain a competitive edge in their organic search engine rankings. Cutting-edge tools that allow full control of the HTML code, the ability to interact with business and social media applications, open framework structure, real-time SEO feedback and true theme and navigation flexibility are among some of the features that set Pixelsilk apart from any other production-level CMS available today.
Pixelsilk is a web-based application. Users simply administer and access their Web sites from any internet connection and popular browser. The Pixelsilk CMS is a proprietary system designed for mid-sized businesses to succeed online. Pixelsilk's client and server APIs allow for the development of custom business objectives that extends the already flexible features of the Pixelsilk system. From social applications like Facebook and Twitter to back-end CRM and sales systems, integrating third party software is made easy through Pixelsilk's extensible framework.
There's a good video that provides a tour of the new system, which you can watch at Pixelsilk.