In the past five years I've posted plans for 16 foam airplane designs here on RC Groups, and I finally got around to putting them all in one place--in my blog here on RCG. Here's a link, or you can just click my username (jetset44) at left to go there:
In addition to posting the latest plans, I've included lots of other useful info for each model, such as technical specs, construction guides, photos, videos, thread location, decal files, kit availability, etc. I've also included a wide selection of scaled plans in the most popular sizes (usually 75%, 120%, and 150%), which many folks will find particularly useful since those tend to be scattered around within the build threads and can be hard to find.
I've attached a photo of each these designs below. Enjoy, and remember to post pics if you build any of these!