At the LA Hadoop Meetup, they introduced Cloudera Desktop - A unified user interface for users and operators of Hadoop clusters.
http://www.cloudera.com/desktop
It is a free, browser based tool that runs against a web server you install on/near your local Hadoop cluster.
- Job Browser
- Cluster Health monitor
- Job Designer
- File Browser
Some of the technologies used to create this app:
- Django Python Web framework on CherryPy Python web server
- Thrift protocol RPC framework for cross-language serializatoin, a Facebook technology
- Javascript
Currently runs on Cloudera's free distribution for Hadoop, but will likely open up to vanilla Apache Hadoop
Cloudera is developing a platform for developers - they are taking input now. Let them know what you want/need this thing to do for you.