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Installing Mnemo H5

This document contains instructions for installing the Mnemo web-based notes application on your system.

For information on the capabilities and features of Mnemo, see the file README in the top-level directory of the Mnemo distribution.


To function properly, Mnemo requires the following:

  1. A working Horde installation.

    Mnemo runs within the Horde Application Framework, a set of common tools for web applications written in PHP. You must install Horde before installing Mnemo.


    Mnemo H5 requires version 5.0+ of the Horde Framework - earlier versions of Horde will not work.


    Be sure to have completed all of the steps in the horde/docs/INSTALL file for the Horde Framework before installing Mnemo. Many of Mnemo's prerequisites are also Horde prerequisites. Additionally, many of Mnemo's optional features are configured via the Horde install.

  2. SQL support in PHP or a configured Kolab Server.

    Mnemo will store its data in either an SQL database or on a Kolab Server. If you use SQL, build PHP with whichever SQL driver you require; see the Horde INSTALL file for details.

Installing Mnemo

The RECOMMENDED way to install Mnemo is using the PEAR installer. Alternatively, if you want to run the latest development code or get the latest not yet released fixes, you can install Mnemo from Git.

Installing with PEAR

First follow the instructions in horde/docs/INSTALL to prepare a PEAR environment for Horde and install the Horde Framework.

When installing Mnemo through PEAR now, the installer will automatically install any dependencies of Mnemo too. If you want to install Mnemo with all optional dependencies, but without the binary PECL packages that need to be compiled, specify both the -a and the -B flag:

pear install -a -B horde/mnemo

By default, only the required dependencies will be installed:

pear install horde/mnemo

If you want to install Mnemo even with all binary dependencies, you need to remove the -B flag. Please note that this might also try to install PHP extensions through PECL that might need further configuration or activation in your PHP configuration:

pear install -a horde/mnemo

Installing from Git


Configuring Mnemo

  1. Configuring Horde for Mnemo

    Mnemo requires a permanent Shares backend in Horde to manage notepads and to add notes to notepads. If you didn't setup a Share backend yet, go to the configuration interface, select Horde from the list of applications and select the Shares tab. Unless you are using Kolab, you should select SQL.

  2. Configuring Mnemo

    You must login to Horde as a Horde Administrator to finish the configuration of Mnemo. Use the Horde Administration menu item to get to the administration page, and then click on the Configuration icon to get the configuration page. Select Notes from the selection list of applications. Fill in or change any configuration values as needed. When done click on Generate Notes Configuration to generate the conf.php file. If your web server doesn't have write permissions to the Mnemo configuration directory or file, it will not be able to write the file. In this case, go back to Configuration and choose one of the other methods to create the configuration file mnemo/config/conf.php.

    Documentation on the format and purpose of the other configuration files in the config/ directory can be found in each file. You may create *.local.php versions of these files if you wish to customize Mnemo's appearance and behavior. See the header of the configuration files for details and examples. The defaults will be correct for most sites.

  3. Creating the database table

    Once you finished the configuration in the previous step, you can create all database tables by clicking the DB schema is out of date. link in the Mnemo row of the configuration screen.

    Alternatively you creating the Mnemo database tables can be accomplished with horde's horde-db-migrate utility. If your database is properly setup in the Horde configuration, just run the following:

    horde/bin/horde-db-migrate mnemo
  4. Testing Mnemo

    Use Mnemo to create, modify, and delete notes. Test at least the following:

    • Creating a new note
    • Modifying a note
    • Deleting a note

Obtaining Support

If you encounter problems with Mnemo, help is available!

The Horde Frequently Asked Questions List (FAQ), available on the Web at

The Horde Project runs a number of mailing lists, for individual applications and for issues relating to the project as a whole. Information, archives, and subscription information can be found at

Lastly, Horde developers, contributors and users may also be found on IRC, on the channel #horde on the Freenode Network (

Please keep in mind that Mnemo is free software written by volunteers. For information on reasonable support expectations, please read

Thanks for using Mnemo!

The Horde team