SixPACK/IFEFFIT, and SMAK License
SixPACK, SMAK, IFEFFIT, FEFFIT, and AUTOBK are Open Source software.
You are free to use, modify, and redistribute the source code and documentation. There is no charge for their use. The main limitations are that you cannot claim you wrote the program or documentation and cannot prevent other people from using them.
The source code and documentation are copyrighted and distributed under the terms of the following license:
Copyright © 2015 Samuel Webb, Stanford Synchrotron Radiation Laboratory
Copyright © 1997--2015 Matthew Newville, The University of Chicago
Copyright © 1992--1996 Matthew Newville, University of Washington
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THIS SOFTWARE.