Top 10 SaaS startups in USA

Funding: $1.2B
Slack is the leading global collaboration hub that makes people’s working lives simpler, more pleasant and more productive.
MailChimp is the world’s leading marketing automation platform for small to medium-sized business. As the backbone for customer relationships, they provide sophisticated tools anyone can use to grow their business and be successful.
Funding: $911M
Zoom helps businesses and organizations bring their teams together in a frictionless environment to get more done.
Funding: $1B
UiPath designs and develops robotic process automation software. The platform offers foolproof development tool, automation of intricate processes, enhanced control, cloud and on-premise deployment, robust governance, and multiple robots on a single virtual machine.
Funding: $1.1B
SurveyMonkey, a leading global survey company, powers curious organizations to measure and act on the opinions that drive success.
Funding: $833M
Square is a merchant services aggregator and mobile payment company that aims to simplify commerce through technology.
Funding: $617.3M
Automattic is the company behind and VIP, the cloud version of WordPress. Automattic hosts and supports all sites ensuring that there is continuous and strategic development of the software available to its users.
Funding: $499M
Toast creates all-in-one point-of-sale and restaurant management platform for businesses in the food service and hospitality space.
Funding: $481.5M
TripActions takes the pain out of corporate travel management with a complete solution that helps businesses control costs and keep employees happy
Funding: $480.4M
Fuze is a cloud-based visual collaboration and personal telepresence service that enables the mobile enterprise to share ANY content, from ANY device, ANYwhere in the world.