AwardWallet - AwardWallet provides a free service that helps you manage your reward balances and travel...

Jovian - Learn Data Science and ML with free hands-on online courses

United Airlines - United Airlines is a reservation site for flights where you can book airline tickets and is also offering membership for exclusive discounts.

GrabzIt - A reliable free API and online tool to convert webpages, URL's and HTML into images or PDF's. As well as a Web Scraper to scrape data directly from the web.

Agoda YCS for hotels only - Agoda YCS for hotels only is a traveling app that comes up with features to help users in minimizing their hotel booking efforts by providing them with a large number of choices all around the globe.

DataKind - A nonprofit connecting data workers and social orgs