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Sandstorm is an open source
platform for self-hosting web apps
Self-host web-based productivity apps easily and securely.
Sandstorm is an open source project built by a community of volunteers with the goal of making it really easy to run open source web applications -- either on your own private server, or on our community-run servers.
Sandstorm protects you. Each document, chat room, mail box, notebook, blog, or anything else you create is a "grain" in Sandstorm. Sandstorm containerizes each one in its own secure sandbox from which it cannot talk to the world without express permission. All your grains are private until you share them. The result is that 95% of security vulnerabilities are automatically mitigated.
You choose where your data lives: You can use Sandstorm in the cloud on a variety of hosting services, or you can install it on your own machines. You can even move between these options at any time. No matter where you decide to run Sandstorm, the apps are the same.
With Sandstorm, you do not get locked into walled gardens. You can mix and match apps from multiple developers with ease, and even throw in apps of your own as needed. Many Sandstorm apps are open source, which means you can modify them to suit you needs.