Proxxi is a neat little social networking app built by my coworkers Greg Wilson and Christophe Coenraets. Instead of the traditional friend/acquaintance based network, Proxxi focuses on connecting you to people via location. So for example, I could create a message saying that a particular restaurant is overcrowded and has a long wait time. People in my area would see the message whether they knew me or not.
The technology stack behind the app is interesting. It uses:
- Topcoat (for UI)
- CloudFront and S3
- Node and Express
You can read more about the stack over at Christophe's blog.
Also behind the scenes is a fascinating mail relay system using Mailgun. Proxxi allows you to communicate via email in a 100% anonymous manner (much like Craigslist if I remember right). I've tested this with Greg and Christophe and it works really well. I've bugged Greg to blog about the details as I think it would be of interest to folks building mobile applications.
Of course the app is free to check out and available for both Android and iOS. Also, you can download it and play with it without having to register, which I wish more apps would allow.