| Alfred | Basic interaction with Alfred |
| AppleScript | Provides limited functionality to AppleScript |
| Choose | Creates and executes AppleScript "Choose from. |
| Config | A simple class to manage configuration for workflows |
| ConfigKeyNotSet | Thrown when trying to get a config key that has not been set |
| Date | Provides text filters for date objects |
| Dialog | Class to create standard AppleScript dialogs. |
| Exception | This is the namespaced "Exception" class (i.e.: Alphred\Exception) |
| FileDoesNotExist | Thrown when trying to access a file that does not exist |
| Filter | Filters arrays to match a query |
| Globals | A class to reteive certain Global variables |
| i18n | Translation library for Alphred |
| Ini | Extends INI parsing and writing for PHP |
| InvalidKeychainAccount | Keychain error |
| InvalidScriptFilterArgument | Thrown when trying to pass bad keys to a script filter |
| InvalidSecurityAction | Thrown with a bad error code. |
| InvalidXMLProperty | Thrown when trying to set an XML property that should not exist |
| Keychain | Enables easy access to parts of the Keychain for secure password storage / retrieval |
| Log | Simple static logging functionality that writes to files or STDERR |
| Notification | Creates simple notifications on OS X 10.8+ |
| PasswordExists | Exception thrown when trying to set a password in the keychain without the `update` flag |
| PasswordNotFound | Thrown when trying to get a password that has not been set |
| PluginFunctionNotFound | Thrown when trying to load a plugin that has not been defined |
| Request | Generic, light-weight, low-functionality wrapper around PHP's cURL library |
| Result | Result class |
| RunningOutsideOfAlfred | This is thrown when trying to use functions that require variables set by Alfred |
| ScriptFilter | Creates Script Filter XML for Alfred |
| ShouldBeBool | Thrown when sending something that should be a bool but isn't |
| Text | Methods to apply "filters" to text to transform them |
| TooManyArguments | Thrown when giving too many arguments |
| UnknownSecurityException | Thrown when `security` doesn't know what to do |
| UseOnlyAsStatic | Thrown when trying to instantiate a class that is written to be used as static only. |