Richard MacManus over at ZDNet writes about some of the best web based office tools currently up and running.

We would love to see Gliffy on this list in the near future. Today we moved one step closer with the expansion of the closed beta for our web based diagramming tool. Included in our new release is a really nifty publishing feature that allows you to put images of your diagrams in your wiki or blog postings. Clint recently posted an example of a picture he drew & published using Gliffy. Expect to see many more examples here in the future. If you would like to be added as a beta user in the future, sign up on the Gliffy home page.