ISC許可證

ISC授權條款是一種開放原始碼授權條款，在功能上與兩句版的BSD授權條款相同。

這份授權條款是由互联网系统协会（，）所發明，在ISC釋出軟體時所使用的。不過有許多開放原始碼團體也使用，其中一個有名的例子是OpenBSD對於新寫的程式碼都會儘量使用ISC授權條款。

ISC授權條款的樣版如下：

Copyright (c) 4-digit year, Company or Person's Name <E-mail address>

Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.