NetBeans and Eclipse both support the GlassFish Server (see other posts at TA: NetBeans and Eclipse). Sun is more invested in NB and the support there has been traditionally better (e.g. see Adam's note) but the Eclipse support is improving too.

Markus reports on two simple ways to Speed-up Deployments into GlassFish from Eclipse. The first involves a workaround using asadmin deploydir to do directory deployment. The other involves selectively turning off Anti-Virus checking. In his case, the combination sped up deployment by 40%.