High Quality Content by WIKIPEDIA articles! XdrawChem is a free software program for drawing chemical structural formulas, available for Windows, Unix, and Mac OS. It is distributed under the GNU GPL. Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with minimal restrictions only to ensure that further recipients can also do these things and that manufacturers of consumer-facing hardware allow user modifications to their hardware. Free software is generally available without charge, but can have a fee.

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