There are lots of open source editors coming of late. [Haroopad](http://pad.haroopress.com/ http://pad.haroopress.com/) is my favourite markdown editor of late

There are lots of open source editors coming of late. [Haroopad](http://pad.haroopress.com/ http://pad.haroopress.com/) is my favourite markdown editor of late. It is based on node-webkit and is also open source. The main points I wish it could include is word completions similar to sublime and spelling corrections.