Microsoft will release the source code to the current version of Windows under a free-software license.

Created by quanticle on 2015-08-14; known on 2025-08-15

• quanticle estimated 30% on 2015-08-14
• quanticle said “Free software licenses: http://www.gnu.org/licenses/license-list.en.html#GPLCompatibleLicenses” on 2015-08-14
• quanticle said ““Current version” defined as a version of Windows receiving official support. So for example, if Microsoft open sources Windows XP in 2025, that doesn’t count.” on 2015-08-14
• mpdelbuono estimated 60% on 2015-08-14
• Josh Holland estimated 25% on 2015-08-14
• supinf estimated 9% on 2015-08-14
• JoshuaZ estimated 25% on 2015-08-14
• btrettel estimated 10% on 2015-08-14
• sdr estimated 5% on 2015-08-14
• btrettel estimated 5% on 2015-08-15
• clemux estimated 5% on 2015-08-15
• timujin estimated 7% on 2015-08-16
• silacoid estimated 3% and said “Probably too many third-party libraries with licenses that prevents distribution of the source code, trade secret concerns and no financial incentive for releasing the full source.” on 2015-08-16
• Afforess estimated 1% on 2015-08-17
• PseudonymousUser estimated 5% on 2015-08-20
• Jayson Virissimo estimated 20% on 2015-08-25
• themusicgod1 estimated 0% on 2016-03-11