A short, permissive software license. Basically, you can do whatever you want as long as you include the original copyright.
This license is functionally identical to the MIT/Expat and the Simplified BSD licenses, discarding some language that was made unnecessary by the Berne convention.
Copyright (c) 4-digit year, Company or Person's Name
Permission to use, copy, modify, and/or 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.
Describes the ability to use the software for commercial purposes.
Describes the ability to modify the software and create derivatives.
Describes the ability to distribute original or modified (derivative) works.
Describes the warranty and if the software/license owner can be charged for damages.
Describes whether the original copyright must be retained.
Including the full text of license in modified software.