en ru

zlib license

This software is provided 'as-is', without any  express  or  implied  warranty.
In no event will the authors be held liable for any damages  arising  from  the
use of this software.

Permission is granted to anyone to use this software for any purpose, including
commercial applications, and to alter it and redistribute it freely, subject to
the following restrictions:

1. The origin of this software must not be misrepresented; you must  not  claim
   that you wrote the original software. If you use this software in a product,
   an acknowledgment in the product documentation would be appreciated  but  is
   not required.

2. Altered source versions must be plainly marked as  such,  and  must  not  be
   misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

Additional

zlib.en.txt
zlib.ru.txt
http://zlib.net/zlib_license.html