Bon.tmbundle is a project mainly written in ..., it's free.
TextMate bundle providing support for the Business Object Notation (BON)
Please note that this project is still in it's very early stages. Only syntax highligting for informal BON is currently supported.
This TextMate bundle provides syntax highlighting and some level of code completion for the Business Object Notation (BON) method. It is in the aim of this project to integrate the bundle with the BONc compiler at some point.
Click on the download page in the top of the page and find the latest release. Download the zip file, extract it and move it to your textmate application support folder. This should be something like:
~/Library/Application Support/TextMate/Bundles
If you have git installed i encourage you to clone the project, like so:
git clone git://github.com/ksmandersen/bon.tmbundle.git
open bon.tmbundle