Ethane Web Technologies Pvt. Ltd. Ethane Web Technologies Pvt Ltd. a.k.a RankingBySEO is an ISO 9001:2008 certified Internet marketing company. We offer complete digital branding and marketing solutions to our US, UK, Australia, Germany and Netherlands based clients. Ethane is a team of convergent thinkers who help to solve all the gravels associated with SEO, link building, pay per click, website development, website designing and content writing.