What are some alternatives?
When comparing Jott Messenger and opengarden.com FireChat, you can also consider the following products
Briar - Secure messaging, anywhere
The Serval Mesh - It works by using your phone's Wi-Fi to not communicate with other phones on the same network.
NickEgo - Meet new people around the World on NickEgo, the Original Social Chat. Register your free Account or chat as Guest.
Near Peer - Near Peer is a offline chat app.
WorldChat - Meet new people around the World on WorldChat.tv, the Original World Chat since 2011.
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.