Whatsapp is a messaging app founded by Brian Acton and Jan Koum that has grown tremendously since its launch in 2009. By 2016, Whatsapp had over 1 billion monthly active users, giving it a large share of the global messaging market ahead of competitors like Line, Viber, and Skype. While Whatsapp's simplicity, quality, and leadership have been strengths, weaknesses include a lack of certain features, reliance on networks and internet access. Opportunities exist in offering online services, but threats include easy duplication by competitors and intense market competition. Potential revenue models being considered are paid versions with or without ads, and separate business and personal versions to generate income.