Download Composr

The first step is to transfer the installation files to your server.

Automatic extractor Recommended

This package ("quick installer") will self-extract on your server and automatically set all permissions.

Works on most servers (needs PHP FTP support or suEXEC on your server).

Download ▾ v10.0.31 | 17 MB

Manual extractor Slower; requires chmodding

This is a ZIP containing all Composr files (several thousand). It is much slower, and only recommended if you cannot use the quick installer. Some chmodding is required.

Do not use this for upgrading.

Download ▾ v10.0.31 | 20 MB

Bleeding edge Unstable

Are you able to beta-test the new version: v10.1 beta22?
It may not be as stable as our main version (v10.0.31).

Download automatic extractor ▾ Download manual extractor ▾

Cloud & SaaS hosting


Composr will work on most kinds of PHP cloud hosting such as AppFog, Rackspace Cloud Sites and Amazon EC2. Bitnami provide quality cloud hosting, and Composr EC2 images.

We have inbuilt support for the kind of advanced features needed for scaling Composr installations.

Other installers

Composr is also available on:

For Developers

Git read access

Git is the revision control system we use to collaborate on Composr.

You can access the repository on GitLab.

We often commit fixes to Git before patch releases come out.

Be aware that the Git repository also has all the ocProducts addons in it. We develop them in there, to keep them up-to-date. There is a script called delete_alien_files.php which will erase them. You need to first delete the sources_custom/hooks/systems/addon_registry/*.php files of any addons you don't want, then run the script, then run the commands the script says (after reviewing), then install.

Git write access

Composr development is sponsored and led by ocProducts, who is the primary developer. However we do accept and encourage external contributions. Composr is a community project after all, even if we do centrally ensure its quality.

We will provide write-access to Git as appropriate (essentially when someone shows a serious commitment to the project in the form of high-quality code).

Are you upgrading?

Instead of using this page, you should login to your Admin Zone. You'll see a link to upgrade there.

Upgrading from ocPortal? You need to use a special omni-upgrader.

Hosting requirements

  • PHP 5.1 or higher, with the following supported:
    • GD2
    • Memory limit 64MB+
  • MySQL 5.5.3 or higher
  • Apache or IIS recommended
  • 50MB of disk space

For more information and recommendations, see our webhosting tutorial.

Forum integration

Composr has its own forum and member system (Conversr), but can also integrate with some third party ones out-of-the-box:

  • Burning Board 2.0 / 2.2/Lite
  • IPB 1.1-1.3 / 2.0-2.3
  • phpBB 2.0-3.0
  • SMF 1.0 / 1.1 / 2.0
  • vB 2.2 / 3.0-3.7
  • WowBB 1.7

Other integration

Conversr can integrate with an LDAP server, facilitating tie in with Active Directory and OpenLDAP logins.

Conversr can also integrate with HTTP authentication systems , facilitating integration with any login system that uses this mechanism.

A powerful framework and a number of programming tools are provided, to accelerate integration with other scripts and web-apps.

Back to Top