SurveyMonkey

SurveyMonkey is an online survey development based SaaS application. It is one of the online survey tool which is used widely & ranks amongst the top survey creation applications.
SurveyMonkey is real-time based online survey website which also offers analytics & gives you result of your surveys instantly.

So these were some of the top SaaS companies & SaaS applications which offer business solutions to major companies & also directly to end users. They provide SaaS products which help organizations to scale up their business & clientele.