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This license is non-free, as a result of Clause 2. The last part of Clause 1 may also make it non-free, depending on upstream's intent.
License Text
Font Computer Program License Agreement Reserved Font Names for this Font Computer Program: TH Krub, TH Krub Italic, TH Krub Bold, TH Krub Bold Italic, TH Niramit AS, TH Niramit AS Italic, TH Niramit AS Bold, TH Niramit AS Bold Italic, TH Kodchasal, TH Kodchasal Italic, TH Kodchasal Bold, TH Kodchasal Bold Italic, TH Sarabun PSK, TH Sarabun PSK Italic, TH Sarabun PSK Bold, TH Sarabun PSK Bold Italic, TH K2D July8, TH K2D July8 Italic, TH K2D July8 Bold, TH K2D July8 Bold Italic, TH Mali Grade 6, TH Mali Grade 6 Italic, TH Mali Grade 6 Bold, TH Mali Grade 6 Bold Italic, TH Chakra Petch, TH Chakra Petch Italic, TH Chakra Petch Bold, TH Chakra Petch Bold Italic, TH Baijam, TH Baijam Italic, TH Baijam Bold, TH Baijam Bold Italic, TH KoHo, TH KoHo Italic, TH KoHo Bold, TH KoHo Bold Italic, TH Fah Kwang, TH Fah Kwang Italic, TH Fah Kwang Bold, TH Fah Kwang Bold Italic. This Font Computer Program is the copyright of the Department of Intellectual Property (DIP), Ministry of Commerce and the Software Industry Promotion Agency (Public Organization) (SIPA) The purposes of this Font Computer Program License are to stimulate worldwide development of cooperative font creation, to benefit for academic, to share and to develop in partnership with others. Terms and Conditions of the Font Computer Program (1) Allow to use without any charges and allow to reproduce, study, adapt and distribute this Font Computer Program. Neither the original version nor adapted version of Font Computer Program may be sold by itself, except bundled and/or sold with any computer program. (2) If you wish to adapt this Font Computer Program, you must notify copyright owners (DIP & SIPA) in writing. (3) No adapted version of Font Computer Program may use the Reserved Font Name(s), the name(s) of the copyright owners and the author(s) of the Font Computer Program must not be used to promote or advertise any adapted version, except obtaining written permission from copyright owners and the author(s). (4) The adapted version of Font Computer Program must be released under the term and condition of this license. DISCLAIMER THE FONT COMPUTER PROGRAM AND RELATED FILES ARE PROVIDED “AS IS” AND WITHOUT WARRANTY OF ANY KIND. NO GUARANTEES ARE MADE THAT THIS FONT COMPUTER PROGRAM WILL WORK AS EXPECTED OR WILL BE DEVELOPED FURTHUR IN ANY SPECIFIC WAY. THERE IS NO OFFER OR GUARANTEE OF TECHNICAL SUPPORT.