Jetty has integrated the JSP compiler from Project GlassFish
By pelegri on Aug 15, 2006
Jan reports that Jetty Has Integrated the GlassFish JSP compiler and it has nice things to say about us.
The GlassFish Team is actively supporting this reuse, typical of open source projects (see DTrace in Leopard) and it factored out the JSP compiler to make it possible to Use the JDT Compiler in JSP compilations. I expect more cross-project sharing / recombinations in the future.
Added: Also check out Jan (Bartel)'s blog.