Even if it's free software, if it has more than one million users and unelected official decides it can be somehow associated with US enemies you can go to jail for 20 years for insisting on using it, if this bill becomes a law.
Section 5(a)(3)(c)
(a) Priority Information And Communications Technology Areas.—In carrying out sections 3 and 4, the Secretary shall prioritize evaluation of—
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(3) any software, hardware, or any other product or service integral to data hosting or computing service that uses, processes, or retains, or is expected to use, process, or retain, sensitive personal data with respect to greater than 1,000,000 persons in the United States at any point during the year period preceding the date on which the covered transaction is referred to the Secretary for review or the Secretary initiates review of the covered transaction, including—
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(C) machine learning, predictive analytics, and data science products and services, *including those involving the provision of services to assist a party utilize, manage, or maintain open-source software;*