he Ipe extensible drawing editor
Ipe is a drawing editor for creating figures in PDF or (encapsulated) Postscript format. It supports making small figures for inclusion into LaTeX-documents as well as making multi-page PDF presentations that can be shown on-line with Acrobat Reader.
The IPE Website - http://ipe.otfried.org/.
This is an Open Source Project.
Thank You.
Please guys,
This has many advantages over what in Pencil Project or Dia.
Thank You.
Neat application. Too bad I haven't found this earlier.
Development Test available here: https://portableapps.com/node/56085