bpmn creation software environment

These days, I am working on business process models (BPM) using standard graphical notation called bpmn (business process model and notation). Brief summary of bpmn and its usage for myriad applications in several domain will be posted soon. Mean while, in this post I am giving few sources for variety softwares in which we can create and manipulate bpmn diagrams.

BPMN initiated by the consortium OMG and also there is a bpmn-community is running by the researchers at Business Process Technology Group of Hasso Plattner Institut, University of Potsdam. The BPMN-community is an open and free platform for the exchange around the Business Process Model Notation. The latest version of BPMN 2.0, is provided since 2011 offically.

Few software sources:

1. sparx EA, is windows compatible software, we can model business process using bpmn elements. The creation of business process models with bpmn in this software also facilitates the take advantages of other modules of sparx systems. But this software is proprietary.
     " This software can be use in linux with the help of wine."
2. dia, is linux based software and open-source.  Terminal command to install is >> sudo apt-get install dia.
3. Iyopro. is actually a compony with freeware. It is great for those who want to feel a more “Window” atmosphere, because the software is design to be deployed as if you operate in Window. The artifacts provided are the latest version of BPMN 2.0. Membership is required. 
4. yED Graph Editor is windows, linux and mac based software and now-days they are also providing on-line service with the option named "launch" the software. They recently released yEd 3.9 version on Jan 31, 2012 with bpmn 2.0 graphical elements compatible