・本家
SKK Openlab
http://openlab.ring.gr.jp/skk/index-j.html
・Vim
skk.vim
http://www.vim.org/scripts/script.php?script_id=1589
eskk.vim
https://github.com/tyru/eskk.vim
・Windows
skkime's page
http://homepage3.nifty.com/monjya/skkime.jis.html
corvus-skk
http://code.google.com/p/corvus-skk/
SKK日本語入力FEP
http://coexe.web.fc2.com/skkfep.html
・Mac
AquaSKK
http://aquaskk.sourceforge.jp/
・X Window System
skkinput2
http://homepage3.nifty.com/monjya/skkinput2.jis.html
skkinput3
http://homepage3.nifty.com/monjya/skkinput3.jis.html
・Android
SKK for Android with hard-key
http://homepage1.nifty.com/ray-mizuki/software/skk_jp.html