If you are annoyed with this automatic activation of Jetpack modules, specially on a multi-site setup, here is how to completely disable modules across the entire network without having to visit each site and disable modules one by one.Since version 2.4, Jetpack has introduced 'jetpack_get_available_modules' filter, which allows you to black lis…

blacklist_jetpack_modules.php

<?php
/*
Plugin Name: Blacklist Jetpack Modules
Plugin URI: https://gist.github.com/ParhamG/6494979
Description: Blacklist Jetpack modules.
Author: Parham Ghaffarian
Author URI: http://parh.am
Version: 0.1.3.4.1
*/

function blacklist_jetpack_modules( $modules ){
    $jp_mods_to_disable = array(
        // 'shortcodes',
        // 'widget-visibility',
        // 'contact-form',
        // 'shortlinks',
        // 'infinite-scroll',
        // 'wpcc',
        // 'tiled-gallery',
        // 'json-api',
        // 'publicize',
        // 'vaultpress',
        // 'custom-css',
        // 'post-by-email',
        // 'widgets',
        // 'comments',
        // 'minileven',
        // 'latex',
        // 'gravatar-hovercards',
        // 'enhanced-distribution',
        // 'notes',
        // 'subscriptions',
        // 'stats',
        // 'after-the-deadline',
        // 'carousel',
        // 'photon',
        // 'sharedaddy',
        // 'omnisearch',
        // 'mobile-push',
        // 'likes',
        // 'videopress',
        // 'gplus-authorship',
        // 'sso',
        // 'monitor',
        // 'markdown',
        // 'verification-tools',
        // 'related-posts',
        // 'custom-content-types',
        // 'site-icon',
        // 'protect',
    );

    foreach ( $jp_mods_to_disable as $mod ) {
        if ( isset( $modules[$mod] ) ) {
            unset( $modules[$mod] );
        }
    }

    return $modules;
}
add_filter( 'jetpack_get_available_modules', 'blacklist_jetpack_modules' );
?>

Great snippet! Just because I hate PHP errors in my logs, and in case a given module has already been altered by another jetpack_get_available_modules filter, I added an isset() check on $modules[$mod] before attempting the unset():

foreach ( $jp_mods_to_disable as $mod ) {
  if ( isset( $modules[$mod] ) ) {
    unset( $modules[$mod] );
  }
}

Thanks @jaydansand! Just updated it with the isset() check and added the new modules introduced in v2.7.

I couldn't get this to work. Can you confirm that it should work with recent 3.9.1 WP and most recent version of Jetpack? I have multisite set up, put the above file in mu-plugins and uncommented a few items. I end up seeing the code displayed in text near the top of the page in the admin interface and the jetpack modules are still there...

@leslieg Try the updated version. PHP tags were missing in the file and I just fixed that. The code is updated for the most recent version of Jetpack which is 3.1.1 as of now.

Thanks for this awesome snippet.