LBPool, or alternatives?

Hi all,
Is anyone using lbpool, and is it available anywhere for download?  All the links I followed lead to dead servers or wrong files.

I'm considering lbpool based on its description, because I'm looking for an alternative to the replication driver, which seems too brittle.  If one slave in the list goes down, the pool can't operate.  I'd also like a dynamic way to stop the driver from connecting to certain slaves (say, during maintenance.)

Thanks for your help,
Kevin Fries