If you're a gEdit fan like I am you will be excited to see these plugins by Jesse van den Kieboom. First off a php completion plugin. This is something I've been hoping to find for quite some time. You can find it over at GitHub. The second thing is Collaboration. While I haven't played with this personally I watched the video and it looks pretty sweet:
I believe Coda already has this feature, so its nice to see it show up in gEdit, which has become my editor of choice lately.