My key mappings for Karabiner to activate apps with shortcut keys

private.xml

<?xml version="1.0"?>
<root>
  <vkopenurldef>
    <name>KeyCode::VK_OPEN_URL_APP_Firefox</name>
    <url type="file">/Applications/Firefox.app</url>
  </vkopenurldef>

  <vkopenurldef>
    <name>KeyCode::VK_OPEN_URL_APP_Finder</name>
    <url type="file">/System/Library/CoreServices/Finder.app</url>
  </vkopenurldef>

  <vkopenurldef>
    <name>KeyCode::VK_OPEN_URL_APP_Google_Chrome</name>
    <url type="file">/Applications/Google Chrome.app</url>
  </vkopenurldef>

  <vkopenurldef>
    <name>KeyCode::VK_OPEN_URL_APP_iTerm</name>
    <url type="file">/Applications/iTerm.app</url>
  </vkopenurldef>

  <vkopenurldef>
    <name>KeyCode::VK_OPEN_URL_APP_MacPass</name>
    <url type="file">/Applications/MacPass.app</url>
  </vkopenurldef>

  <vkopenurldef>
    <name>KeyCode::VK_OPEN_URL_APP_MacVim</name>
    <url type="file">/Applications/MacVim.app</url>
  </vkopenurldef>

  <vkopenurldef>
    <name>KeyCode::VK_OPEN_URL_APP_Safari</name>
    <url type="file">/Applications/Safari.app</url>
  </vkopenurldef>

  <item>
    <name>Map ⌘^e to activate Firefox</name>
    <identifier>private.command_control_e</identifier>
    <autogen>
      __KeyToKey__
      KeyCode::E, ModifierFlag::COMMAND_L, ModifierFlag::CONTROL_L,
      KeyCode::VK_OPEN_URL_APP_Firefox,
    </autogen>
  </item>

  <item>
    <name>Map ⌘^r to activate Finder</name>
    <identifier>private.command_control_r</identifier>
    <autogen>
      __KeyToKey__
      KeyCode::R, ModifierFlag::COMMAND_L, ModifierFlag::CONTROL_L,
      KeyCode::VK_OPEN_URL_APP_Finder,
    </autogen>
  </item>

  <item>
    <name>Map ⌘^c to activate Google Chrome</name>
    <identifier>private.command_control_c</identifier>
    <autogen>
      __KeyToKey__
      KeyCode::C, ModifierFlag::COMMAND_L, ModifierFlag::CONTROL_L,
      KeyCode::VK_OPEN_URL_APP_Google_Chrome,
    </autogen>
  </item>

  <item>
    <name>Map ⌘^t to activate iTerm</name>
    <identifier>private.command_control_t</identifier>
    <autogen>
      __KeyToKey__
      KeyCode::T, ModifierFlag::COMMAND_L, ModifierFlag::CONTROL_L,
      KeyCode::VK_OPEN_URL_APP_iTerm,
    </autogen>
  </item>

  <item>
    <name>Map ⌘^1 to activate MacPass</name>
    <identifier>private.command_control_1</identifier>
    <autogen>
      __KeyToKey__
      KeyCode::KEY_1, ModifierFlag::COMMAND_L, ModifierFlag::CONTROL_L,
      KeyCode::VK_OPEN_URL_APP_MacPass,
    </autogen>
  </item>

  <item>
    <name>Map ⌘^v to activate MacVim</name>
    <identifier>private.command_control_v</identifier>
    <autogen>
      __KeyToKey__
      KeyCode::V, ModifierFlag::COMMAND_L, ModifierFlag::CONTROL_L,
      KeyCode::VK_OPEN_URL_APP_MacVim,
    </autogen>
  </item>

  <item>
    <name>Map ⌘^s to activate Safari</name>
    <identifier>private.command_control_s</identifier>
    <autogen>
      __KeyToKey__
      KeyCode::S, ModifierFlag::COMMAND_L, ModifierFlag::CONTROL_L,
      KeyCode::VK_OPEN_URL_APP_Safari,
    </autogen>
  </item>
</root>

数字のキーのキーコードは例えば1なら KeyCode::KEY_1 と書きます。
詳細はprivate.xml Reference Manualを参照してください。