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1 Tango is Open Source software, distributed by a group of developers which has been set up for the purpose of providing a vendor-neutral owner of Tango intellectual property. The goals of all Tango licensing decisions are to:
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2
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3 * Encourage adoption
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4 * Discourage political contention
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5 * Encourage collaboration and integration with other projects
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6 * Be transparent
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7
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8 Tango is dual-licensed:
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9 * Academic Free License v2.1 (http://opensource.org/licenses/afl-2.1.php)
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10 * BSD License (http://opensource.org/licenses/bsd-license.php) [1]
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12 The preferred license is the Academic Free License v2.1. All Tango projects release their code under the terms of this license. Both licenses:
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14 * Allow commercial use without encumbrance
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15 * Provide broad rights to make new products and derivative works
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16 * Place no requirement on users to contribute back (although we appreciate it if you do)
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17
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18 Users who wish to include Tango with software licensed under the (L)GPL will want to use Tango under the terms of the BSD License. [1] Tango projects may request a variance from the developers to release their projects under additional licenses in conjunction with the AFL.
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20 If you have further questions regarding Tango licensing, please do not hesitate to contact us (http://dsource.org/projects/tango/wiki/Contact).
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22
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23 [1] The advertising clause has not been a part of the BSD License since July 22, 1999. (ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change)
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