the basic ruleset is free to use in commercial products under the OGL [1]. The official Wizards of the Coast published adventures are not free for distribution

the basic ruleset is free to use in commercial products under the OGL [1]. The official Wizards of the Coast published adventures are not free for distribution and is (legally) available only through authorized resellers like D&D Beyond and roll20. [1] https://dnd.wizards.com/articles/features/systems-reference-document-srd https://dnd.wizards.com/articles/features/systems-reference-...