Deployer is described as 'deployment tool written in PHP, it's simple and functional. Deploy your code to all servers you want, it supports deploy via copy, or via VCS (like git), or via rsync' and is an app in the Development category. There are eight alternatives to Deployer for a variety of platforms, including Linux, Mac, Online / Web-based, Windows and Self-Hosted solutions. The best alternative is DeployBot. It's not free, so if you're looking for a free alternative, you could try Storm.dev or Capistrano. Other great apps like Deployer are Ansistrano (Free, Open Source), DeployPlace (Free), SSPS (Free, Open Source) and fredistrano (Free, Open Source).
A collaborative network of nodes. Storm is the way to improve the management of your web application. Manage, monitor and stress test your web resources. Automation server, workflow, continuous integration, automatic development.
Capistrano is a utility and framework for executing commands in parallel on multiple remote machines, via SSH. It uses a simple DSL (borrowed in part from Rake) that allows you to define tasks, which may be applied to machines in certain roles.
A simpler way to manage servers online. Commando.io empowers users to be more efficient, improve their workflow, and eliminate anxiety over server provisioning, maintenance, and deployment. DropBox simplified online storage, GitHub simplified revision control, Commando.