The TurnKey Linux Virtual Appliance Library is a free open-source software project which develops a range of Debian-based pre-packaged server software appliances (also called virtual appliances). Turnkey appliances can be deployed as a virtual machine (a range of hypervisors are supported), in cloud computing services such as Amazon Web Services or installed in physical computers. Features The project maintains around 100 virtual appliances, all freely licensed, with daily automatic security updates and backup capabilities. They are packaged in formats for different virtualization platforms, and two builds for installing onto physical media (to non-virtualized hard disk or USB from a hybrid ISO) or onto the Amazon Elastic Compute Cloud. Virtual appliances distributed as virtual machine types such as: Open Virtualization Format (OVA) - As of v14.0 was the default VM format. It supports VirtualBox and most VMware products (e.g. Workstation, Player, Fusion and vSphere/ESX). Also includes open-vmtools (for VMware). VMDK - "VM" in Turnkey Linux download mirrors - As above, but packaged as a zip containing a VMDK vHDD as well as a VMX (legacy VMware vm config file). Runs on KVM/QEMU OpenStack Container - This somewhat generic container format is specifically packaged for Proxmox (as tar.gz) (and formerly OpenNode too). These builds can be downloaded direct within Proxmox's WebUI (and formerly via OpenNode's interface). The tar.gz archive is also known to work with both vanilla OpenVZ and LXC with minimal tweaking. Xen Docker Installable Live CD/USB: a hybrid ISO image which can be burned to either CD or USB and used to install on both bare metal (I.e. a non-virtualized physical machine) and virtual machines, including VMware, Xen, XenServer, VirtualBox, and KVM. This image can also run live in non-persistent demo mode. Amazon Machine Image: provisioned on-demand on Amazon Elastic Compute Cloud via either the TurnKey Linux Hub or Amazon Marketplace. Pre-integrated server applications include LAMP, WordPress, Joomla, Drupal, Redmine, MySQL, MediaWiki, Domain controller, File server, Ruby on Rails, phpBB, and many others. History Founded by engineers of an Israeli startup, the project was conceived in mid-2008 as a community-oriented open source project that would focus on helping users piece together turnkey solutions from open source components in the largest Linux distributions. According to one of TurnKey Linux's co-founders, the project was in part inspired by a desire to provide open source alternatives to proprietary virtual appliance vendors that would be aligned with user interests and could engage the community.