StumbleUpon was a browser extension, toolbar, and mobile app with a "Stumble!" button that, when pushed, opened a semi-random website or video that matched the user's interests, similar to a random web search engine. Users were able to filter results by type of content and were able to discuss such webpages via virtual communities and were able to rate such webpages via like buttons. StumbleUpon was shut down in June 2018.
Jason McCabe Calacanis is an American Internet entrepreneur, angel investor, author and podcaster.
Google Checkout was an online payment processing service provided by Google aimed at simplifying the process of paying for online purchases. It was discontinued on November 20, 2013 and the service moved to Google Wallet.
Justin Kan is an American internet entrepreneur and investor. He is the co-founder of live video platforms Justin.tv and Twitch, as well as the mobile social video application Socialcam. He is also the cofounder and former CEO of law-tech company Atrium.
Timothy Ferriss is an American entrepreneur, investor, author, podcaster, and lifestyle guru. He became well-known through his 4-Hour self-help book series—including The 4-Hour Work Week, The 4-Hour Body, and The 4-Hour Chef—that focused on lifestyle optimizations, but he has since reconsidered this approach.
Songza was a free music streaming and recommendation service for Internet users in the United States and Canada.
Facebook is a social networking service originally launched as FaceMash on October 28, 2003, before changing its name to TheFacebook on February 4, 2004. It was founded by Mark Zuckerberg and college roommates and fellow Harvard University students, in particular Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes. The website's membership was initially limited by the founders to Harvard students, but was expanded to other colleges in the Boston area, the Ivy League, and gradually most universities in the United States and Canada, corporations, and by September 2006, to everyone with a valid email address along with an age requirement of being 13 and older.
Graphicly was a platform for publishers which offered work flow integration, self-publishing, digital distribution, conversion, and promotion for digital content. Launched by Kevin Mann and Micah Baldwin, the website was initially a platform for digital comic books, but later added support for children's books, art books, and magazines. Graphicly accumulated more than 3,500 publishers and more than 10,000 independent creators. The website hosted an active social community, allowing creators and fans to interact directly. Graphicly shut down in May 2014, and some of its key staff moved on to fellow digital publisher Blurb.
Wayne Chang is an American entrepreneur, angel investor, film producer, and philanthropist. He is best known for founding Crashlytics, a startup acquired by Twitter in 2013. He is also known for creating a filesharing network called i2hub, making various seed investments, and his lawsuit against the Winklevoss brothers.
Path was a social networking-enabled photo sharing and messaging service for mobile devices that was launched in 14 November 2010. The service allows users to share up to a total of 50 contacts with their close friends and family. Based in San Francisco, California, the company was founded by Shawn Fanning and former Facebook executive Dave Morin.
AngelPad is an American seed-stage startup incubator, launched in September 2010 by Thomas Korte and Carine Magescas with six other former Google employees as mentors. AngelPad provides mentorship, seed money, and networking at two 10-week courses per year.
Stripe, Inc. is an Irish-American financial services and software as a service (SaaS) company dual-headquartered in South San Francisco, California, United States and Dublin, Ireland. The company primarily offers payment-processing software and application programming interfaces for e-commerce websites and mobile applications.
Garrett Camp is a Canadian billionaire entrepreneur. He has helped build a series of companies, including founding StumbleUpon, a web-discovery tool; co-founding Uber; and founding Expa, a startup studio. Camp is chairman of Mix, the successor to StumbleUpon, and served on the board of directors of Uber until 2020.
Piggybackr is an American crowdfunding website for students and youth teams to fundraise for their schools, projects, and causes online. It is compliant with the Children's Online Privacy Protection Act, meaning that children under the age of 13 must have parental involvement with their projects. Children as young as 5 can run fundraising projects online. Backers of projects can post public comments, but cannot communicate directly with the children posting projects.
Clinkle was a mobile payments company founded in 2012. In 2013 they raised $25 million and the product launched to college students on September 24, 2014.
WillCall was a San Francisco-based startup company offering a mobile app for iPhone and Android devices that allowed users to gain admission to live concerts, tip artists, and purchase merchandise during a show. It was named one of the Hottest Startups of 2013 by Forbes. Since its inception, the company had become known for editorial curation, a UX driven product strategy, and social networking integration. It had been called "an Uber for nightlife — one that makes everything from attending shows to buying drinks and merchandise much easier," by TechCrunch.
Josh Stein is an American businessman and venture capitalist. He is a managing partner at Threshold Ventures and was featured in the Forbes Midas List in 2013, 2014 and 2015 in recognition of his accomplishments as an investor. He was also the recipient of the 2015 Deloitte Fast 500 Venture Capitalist of the Year award. Stein holds board responsibilities at Box (company), Chartbeat, LaunchDarkley, LendKey, Lumity, and Talkdesk—and led Box’s first round of institutional investment. He is also an investor in AngelList, Doximity, Front, Loftium,Periscope Data acquired by Sisense, and Rippling,.
Hany Rashwan is an Egyptian businessman, entrepreneur, and computer engineer. He is the founder of crypto companies Amun AG and 21Shares AG. He previously founded social commerce company Ribbon and enterprise fintech company Payout.
PayU is a Netherlands-based payment service provider to online merchants. The company was founded in 2002, and is headquartered in Hoofddorp. It allows online businesses to accept and process payments through payment methods that can be integrated with web and mobile applications. As of 2018, the service is available in 17 countries. The firm is owned by the Naspers Group, which also owns a stake in one of its sister companies, Tencent.
Doppler Labs was a San Francisco-based audio technology company, founded in 2013. The company designed and manufactured in-ear computing technology, including earplugs and wireless smart earbuds.
