What are some alternatives?
When comparing Sparta and Bonusly, you can also consider the following products
Close - A CRM with built-in calling, SMS, and email
Motivosity - Peer-to-peer recognition platform that engages employees
SalesWise - A gorgeous launchpad for sales people
WebHR - WebHR is an online Human Resource Management system for a small, medium or a large organization.
Hoopla - Your public library at your fingertips.
Lanteria HR - Customizable to your needs - Human Resource software based on SharePoint and Office 365