Keep track of state budget items with this tool

The Massachusetts Budget and Policy Center (Mass Budget) has an interactive tool, their Budget Browser, which allows you to keep track of the various proposals and revisions of the state budget as it goes through the legislative process.
The application is described as,

The Budget Browser allows you to search for state budget information from Fiscal Year 2001 through the current fiscal year. It is also updated to include budget proposals for the next fiscal year as they are released by the Governor and the Legislature.

We are currently in Fiscal Year 2010. The Commonwealth's fiscal year, ...

... as well as those of municipalities and school districts, runs from July 1 to June 30. FY 2011 starts in July 2010.
The link includes a step-by-step guide on how to use the Budget Browser, a Resources & Glossary page, and an expanded Tax Revenue Information section.
This is a great tool to keep track of budget items that you are interested in. Try it out.