Magento Open Source is a free edition of the platform designed for developers and small businesses. This version can be downloaded and used completely free of charge. However, launching a Magento Open Source web store goes beyond downloading and installing the software.
Open Source is a self-hosted commerce platform with robust commerce features available free of charge. However, there are significant trade-offs you face by choosing Open Source instead of Magento Commerce like-
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Magento Opensource is available for everyone without any charges. It's a free, open-source platform, and you can continue and configure the platform as you like. Also, Opensource users have access to numerous extensions and themes and are backed by a growing community.