Web-app which allows observe many Slack channels simultaneously by listing selected Slack channels together with their last messages on a singe page. The list is sorted according to the following rules:
- Channels where the last message was sent by a channel guest go first.
- Channels with the oldest last message go first.
- Open an interesting channel in the Slack web app.
- Mark a channel as OK which would disable the first sorting criteria for this channel till it's updated with a message from a guest user again.