Open-source learning management systems (LMS) are often the easiest to use and have a wealth of support documentation, but they require hosting the system and providing technical support. While LMS provide standardized interfaces, instant feedback, and convenience for educators, they can be restrictive and technology-driven. Vendor lock-in is also a problem if the LMS is switched. However, LMS allow copyrighted content behind passwords and communication tools. Downsides include lack of control, support, and access to student information if the vendor shuts down.