Tkoutline - Tkoutline is a single pane, cross-platform outline editor written in Tcl/Tk .
Workflowy - A better way to organize your mind.
Dynalist - Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.
Legend - Animate Text in Video & GIF
EditiX - EditiX is a quality Open Source XML Editor and XSLT Editor for Windows, Mac OS X and Linux. Test for Free with our 30-day Trial !
TreePad - A free and lightweight outliner, only 465KB in size.