With open source applications being the order of the day, LMS are not to be left behind. There is a proliferation of open source LMS in the market, with some having come of age and proving tough competition to their commercial counterparts. The use of these open source LMS in higher education is being hailed by academicians and students alike, which has seen copious educative institutions and universities adapting them. These LMS offer unique features which cater to varied requirements. Hence, no LMS can fit the bill of the best LMS. Trying to incorporate remotely connected features in a single LMS would be a sure recipe for failure. Thus, there cannot be a best LMS, but there sure can be one that is tailor made for your requirements. We have discussed the features of some of the most popular LMS here, to help you in your search. ATutor ATutor is an open source web-based Learning Management System (LMS), that scholarships for high school seniors provides easy interface and navigation. While courses can be easily created with the available course platform, course creation is difficult with different types of content. SCORM and IMS compliant content packages can be imported and exported, but the course elements cannot be bookmarked. Functions too cannot be easily added to by the developers, but overall, ATutor is designed for easy accessibility and adaptability. Claroline Designed with a shipshape interface, Claroline is marked by ease of use and a typical assortment of functions. Course creation can be quick and requires no training. Features such as a private document repository are beneficial for a group. But, the browse back control is erratic and all course elements cannot be bookmarked. The access to documents is not controlled rendering them prone to security concerns. Limited customization options and weak documentation leave much to be desired.