Agora Flat
Project flat is the Web, Windows and macOS client of Agora Flat
... hope that through Flat the transfer cost of knowledge can be reduced a little. We knew that our power alone wasn’t enough, so we decided to open source, give as many developers as possible the opportunity to participate, and let the ideas and power of the community nourish Flat until it becomes something useful. Flat is currently under heavy development. It still grows up day by day. We are very happy to share this joy with you.