Quite frankly, it’s many people’s opinion (ours included) that Writely, Jotspot Live, Writeboard, Chalk and others are ultimately addressing the same customer pool – those who want to create, share, and group-edit documents online.
Zoho Writer is the newest entrant and is as good as the rest. Think Word + Group Editing + Ajax. It’s a rich ajax application that allows sharing and group editing, and, like Writely, has a great wysiwyg editing interface and excellent image import and manipulation features.
In fact, it’s pretty much exactly like Writely, except they do not yet support Word format import/export or tagging (coming soon).
Check out Zoho’s BackPack-like product Zoho Planner too.
Can’t wait to see Google’s (rumored) full Ajax suite that is (rumored to be) coming out this year.