Downloads & Sources

### Download Survey
Help us understand why our software is downloaded and improve future versions by completing this survey

### Supported Platforms

See [supported platforms](/content/supported-platforms) for a list of platforms we support as well as system requirements.

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Since Thunderbird 24, OBM use official version of [Lightning](https://addons.mozilla.org/thunderbird/addon/lightning/ "lightning from addons.mozilla.org").

Install Lightning from modules page in thunderbird and [install from file](https://support.mozilla.org/en-US/kb/add-ons-and-extensions-faq#w_how-do... "how do I install an add-on") the OBM connector :

**Latest OBM connector for Thunderbird**

# Install OBM 3.1
_RoundCube webmail is include since 3.0 to facilitate the installation._
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Read the [full documentation to install OBM 3.1 on Wheezy](install-obm-31-debian-wheezy) or browse [debian packages repository]( http://deb.obm.org/30 "deb.obm.org/30")

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Read the [full documentation to install OBM 3.1 on CentOS 6](/wiki/install-obm-3-centos-6) or browse [centos packages repository](http://rpm.obm.org/30 "rpm.obm.org/30")

# Install OBM 2.5
_OBM and Roundcube with addressbook plugin have to be installed separately._

### OBM Core
#### Debian
Browse [**Debian Packages for OBM 2.5**](http://deb.obm.org/25 "deb.obm.org/25")

Install OBM 2.5 on [Debian **Squeeze**](/wiki/install-obm-debian-squeeze)

Install OBM 2.5 on [Debian **Lenny**](/content/install-obm-debian)

#### Centos
Browse [**Centos Packages for OBM 2.5**](http://rpm.obm.org/25 "rpm.obm.org/25")

Install OBM on [CentOS 6](/wiki/install-obm-25-centos-6)

#### Roundcube
The addressbook from OBM is fully synchronizable with the one from the webmail [Roundcube](http://roundcube.net/). Find the last
stable addressbook plugin [here](http://www.obm.org/roundcube-addressbook-plugin/stable/) or the full webmail with an already embedded plugin [here](http://www.obm.org/roundcube-addressbook-plugin/obm-webmail.tar.gz). (See also [Synchronize OBM with Roundcube](/wiki/install-roundcube-address-book-plugin-obm))

## **Sources**

OBM uses the Git versioning system. Once git is installed on your computer, clone the repository:

git clone http://git.obm.org/obm obm

You will be on the _master_ branch, ready to develop on the latest version of OBM.
If you want the specific sources of your OBM version, please enter the following command:

git checkout

For instance, if you want the sources of OBM 2.4.0.1, do:

git checkout 2.4.0.1

## Older Thunderbird Connector

Find older [obm-connector plugin into the **stable** directory ](/mozilla-addons/obm-connector/) and see [supported platforms](/content/supported-platforms#mozilla) for compatibility.
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