Japanese Emoticons - The ultimate copy tool for Japanese emoticons
Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
OJI - (◕‿◕) Interactive text emoji maker!
draw.io - Online diagramming application
LennyFaces.net - Cheatsheets for various lenny faces ( ͡° ͜ʖ ͡°)
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.