This is documentation for Kohana v2.3.x. For v3.x documentation, see http://kohanaframework.org/guide .
Most of the Kohana source code is written by the Kohana Team. There are a few notable credits, however.
Kohana was originally a fork of CodeIgniter (CI), which is an open-source product of EllisLab. There are still many similarities between CI and Kohana, particularly in naming conventions and filesystem design, but all of the code is either new or completely rewritten.
CodeIgniter is © 2006 EllisLab, Inc.
All of the Kohana UTF-8 functions are ported from the phputf8 project.
phputf8 is © 2005 Harry Fuecks.
popoon is © 2001-2006 Bitflux GmbH
The alternative XSS filter used by Kohana is HTML Purifier. This is an optional download.
HTML Purifier is © 2006-2007 Edward Z. Yang
The recommended way to send emails in Kohana is using SwiftMailer. This is an optional download.
SwiftMailer is © Chris Corbyn