Internet Marketing Agency. Elevate Your Brand. Regex SEO is a Houston-based Internet Marketing company, which was formed by a group of seasoned professionals with extensive experience in the digital marketing arena. We wanted to offer a no-nonsense, transparent approach to Internet Marketing, SEO services, and online marketing campaigns. Our experience ranges from SEO consulting, SEO engineering, web design, PPC (Pay per click / Google AdWords), Internet Marketing project management and Search Engine Optimization to database and software development.