Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
Promotehour - Free list of 1100+ media outlets to pitch your startup
SEO PowerSuite - Get all SEO tools in one pack - download free edition of SEO PowerSuite and get top 10 rankings for your site on Google and other search engines!
Submit Juice - Free and curated list of startup directories to promote your new startup. We manually post your startup to more than 150+ relevant directories and blogs to help your startup get discovered.
SEO Tools Centre - SEO Tools Centre provides SEO checker services for websites.
pressfarm - Pressfarm helps entrepreneurs find journalists to write about their startups.