[flexcoders] open source server side push

[hgnowhg]

Are there any open source (i.e. FREE!) server side push services that do NOT 
limit the number of concurrent users? i.e. Blaze is open source but limits the 
number of subscribers. LCDS would be perfect but is expensive. All I need is a 
datagrid that will update w/ new data as data gets added to my MySQL server.