TupiTube (previously KTooN and Tupi 2D) is a free and open-source 2D animation software developed and maintained by the Colombian startup, Mae Floresta.

It is available for Windows, Mac OS X, Linux and Android under the terms of the GNU GPL-2.0 or later license.

TupiTube App - Android version of the software for mobile devices TupiTube Desk - desktop version of the software for Windows, Mac OS X and Linux The KtooN software project was started by two Colombian animators in 2002 and was under continuous development until 2006.

[2] In 2009 the project was put on hold, but later redesigned and a new stable release was made available in 2010.

[2] Tupi (later rebranded as TupiTube) was started in 2010 as a fork of KTooN by its former co-developer.