Heimdall Application Dashboard is a dashboard for all your web applications. It doesn't need to be limited to applications though, you can add links to anything you like. Some recognized applications can have their APIs accessed if you enter credentials. Recognizes other applications for the purpose of search and autocomplete. Written in PHP, uses SQLite as its datastore.
Affordable and reliable budget dedicated servers. Instant preconfigured dedicated servers available now!
Teaching the server tech you need for development and production. Eliminating the frustration of server configuration. Databases, configuration management, containers, proxies, security, PHP, and much more.
The Debian project's canonical list of groupware available for Debian.
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An online store that specializes in spare parts for and discount UNIX servers and high-end workstations. They have machines and parts for Sun equipment, Dell, HP, Rackables, and Supermicro. A lot of this gear used to be horribly expensive, so hobbyists and sysadmins on slim budgets often have to search long and hard for replacement components.
A utility written in python that scans for open top-level proxy servers. scanner Runs fairly exhaustive tests to find suitable servers. Don't run this from home! Lightweight dependencies.
A wiki of companies that offer cheap vps and server hosting around the world.
Vagrant is a utility for automating the deployment of virtualized environments using VirtualBox v4.x. It helps create and configure lightweight, portable virtual instances in a reproducable (i.e., scriptable) fashion. Written in Ruby.
A VPS hosting provider that uses Xen and lets you run BSD as well as Linux. Could be useful.