Saba software (NASDAQ:SABA) sells e-learning software. Saba's software is a communications platform that allows instructors to teach a class of "virtual" students who attend the class via a web browser. Saba's software displays the slideshow the instructor provides, transmits the instructor's voice over the internet, and has built in feedback and communication functionality (so that students can signal they have a questions during a lesson).
Saba's software isn't really used by universities, however - it's used by corporations who have to train employees. This training can be anything from basic day 1 onboarding for new employees (IE, how to do your job) to required compliance training (for employees in regulated industries where ongoing training is required) to ongoing training for sales reps.
Although most of the company's revenue comes from e-learning products, it also sells other HR-related software, such as software to track employee performance, and for talent management, which the company cross-sells to existing e-learning customers. 
Saba breaks its revenue down into 4 categories:
The company's customers have been shifting from it's relatively high-margin full-license software, to the (for Saba) lower margin "on demand" software as a service product.