What are some alternatives?
When comparing Udemy and Collaborator, you can also consider the following products
Adobe Captivate Prime LMS - Adobe Captivate Prime LMS is easy to setup and helps in delivering engaging learning experiences in a personalized manner across devices.
Moodle - Moodle - Open-source learning platform | Moodle.org
Forge LMS - Forge is an online learning platform that empowers teams of individuals to fulfill their professional ambitions.
MindTickle - MindTickle is a sales readiness platform to reduce ramp time, drive consistent messaging, & ensure effective field communication
Datacamp - DataCamp is a massive open online course (MooC) platform that helps everyone from novices to experts hone their skills with data science.
WorkRamp - Web based employee training & development tool