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TeX Live Utility (a utility to update, install or remove parts of TeX Live).The full MacTeX install package contains three subpackages: TeX Live is distributed by the TUG, making MacTeX less a fork of TeX Live than a customised repackaging. MacTeX is packaged and distributed by the MacTeX TeXnical working group, a subgroup of TeX Users Group (TUG). It is also pre-configured to work out-of-the-box with macOS, as it provides sensible defaults for configuration options that, in TeX Live, are left up to the user to allow for its cross-platform compatibility.
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While TeX Live is designed to be cross-platform (running on Unix, MacOS, and Windows), MacTeX includes Mac-specific utilities and front-ends (such as TeXShop and BibDesk). MacTeX is a free redistribution of TeX Live, a typesetting environment based on TeX.
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