This looks exactly like Confluence (no doubt it is better designed in various ways). Here is a Quora question asking for Confluence alternatives (Slite listed). [1]
Right now I am really impressed with how coda.io creates documents with structured data, which is a different paradigm that overlaps with some note taking applications.
As a confluence admin, i can only agree. This looks like Confluence with Hipchat and a colorful CSS integrated. Pretty sure this is where a lot of the inspiration is coming from. One can only hope they will not take the atlassian approach on solving feature-request or bug-fixes, because then it would actually be confluence :) Will give it a test run however.
Right now I am really impressed with how coda.io creates documents with structured data, which is a different paradigm that overlaps with some note taking applications.
[1] https://www.quora.com/Are-there-any-modern-confluence-altern...