SXEmacs is a fork from XEmacs 21.4, led by SteveYoungs, a former and current XEmacs developer. Relations between the two projects remain amicable, and most of the package system, for example, is maintained in common.
This work is licensed to you under version 2 of the
GNUGeneral Public License.
Alternatively, you may choose to receive this work under any other
license that grants the right to use, copy, modify, and/or distribute
the work, as long as that license imposes the restriction that
derivative works have to grant the same rights and impose the same
restriction. For example, you may choose to receive this work under
GNUFree Documentation License, the
License, the XEmacs manual license, or