If a distro has an Official package, that means you can install it from your package manager. Those packages might be of an older version of MyPaint. Unoffical packages are often newer. Development packages are very recent. If you cannot find a package for your distro or the version you want, you can always get the source and compile from the official Download page
|Distro||Official||Unofficial||Development||Bugs/QA (for developers)|
|Ubuntu||In universe for 10.04+||getdeb.net||MyPaint Testing PPA||QA overview|
|Debian||In unstable from fall 2009||QA overview|
|Arch Linux||In community from 17.03.2010||mypaint-git in AUR|
|Fedora||In Fedora for F11+||Bug list|
|ALTLinux||In Sisyphus from fall 2009|
|Mandriva||In contrib for 2010.0+|
|Gentoo||Included as media-gfx/mypaint since 2010-12-31|
|OpenMamba||In devel In milestone2|
Status: 0.9.1 installer done, linked directly from the homepage
A 100% Portable and stealthy version is available on winPenPack Project site. This package is up-to date very quickly if win32 new versions are released.
You can reach it HERE -- submitted by Rikylov (after "dementsnake" virus check-out)
Status: Successfully builds and runs with X.app. Available in macports
Do not use the Snowleopard X11 xorg-server, use the macports version (>= v1.8.1).