SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
authorSTREAM - authorSTREAM enables presenters to upload & share PowerPoint, Keynote & PDF presentations online; embed in blogs, convert to video and share on social networks.
Majestic - Majestic - Link intelligence tools for SEO and Internet PR and Marketing. Site Explorer shows inbound link and site summary data.
PreZentit - Prezentit is an online presentation solution based on JavaScript that comes with new online collaboration tools.
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
Zentation - Affordable webinar software. Create online presentations with synchronized video and PowerPoint.