Joyent Inc is a software and services company based in California which specializes in application virtualization and cloud computing. Its core features include Auto Scaling, Cloud Storage, Database as a Service, Disaster Recovery, Firewalls, Horizontal Scaling, Load Balancing, Object Storage, Vertical Scaling and VPN Access. Joyent uses and supports open source projects, including Ruby on Rails, Node.js, Illumos and SmartOS, which is its own distribution of Illumos. It also features DTrace for troubleshooting and systems monitoring, and the ZFS file system to connect servers to storage systems. Joyent’s preconfigured operating systems are Cent OS, Open Solaris and Windows Server and its native databases include MongoDB and MySQL. It also has a special support for node.js application.