Intended audience. This installation guide for Liferay Portal 4 is still a work in progress and will be updated frequently with new content. Contributions are welcome. It explains from the simplest installation methods intended for people reviewing Liferay to the most elaborate ones that will serve those wanting to install Liferay in servers. All Liferay supported servers and databases are covered.

Liferay version. This guide has been written for Liferay 4.2. Some details might be slightly different for previous 4.x versions. Do not expect it to be accurate for older versions.

Related documents. If this is not what you are looking for consider the following related documents

More information and support. If you are looking for help for a specific issue we invite you to use our community forums: http://www.liferay.com/web/guest/devzone/forums to ask your questions. We also offer professional support services (support@liferay.com) where your company will be assigned a Liferay developer ensuring your questions are answered promptly so that your project is never compromised. Purchased support always gets first priority. This business model allows us to build a company that can contribute a great portal to the open source community. If your company uses Liferay, please consider purchasing support. Liferay has an extremely liberal license model (MIT, very similar to Apache and BSD), which means you can rebundle Liferay, rename it, and sell it under your name. We believe free means you can do whatever you want with it.