This list of command defined in the WebDriver json wire protocol.
GET_ALL_SESSIONS
GET_CAPABILITIES
NEW_SESSION
STATUS
CLOSE
QUIT
GET
GO_BACK
GO_FORWARD
REFRESH
ADD_COOKIE
GET_ALL_COOKIES
DELETE_COOKIE
DELETE_ALL_COOKIES
FIND_ELEMENT
FIND_ELEMENTS
FIND_CHILD_ELEMENT
FIND_CHILD_ELEMENTS
CLEAR_ELEMENT
CLICK_ELEMENT
SEND_KEYS_TO_ELEMENT
SEND_KEYS_TO_ACTIVE_ELEMENT
SUBMIT_ELEMENT
UPLOAD_FILE
GET_CURRENT_WINDOW_HANDLE
GET_WINDOW_HANDLES
GET_CURRENT_CONTEXT_HANDLE
GET_CONTEXT_HANDLES
SWITCH_TO_WINDOW
SWITCH_TO_CONTEXT
SWITCH_TO_FRAME
SWITCH_TO_PARENT_FRAME
GET_ACTIVE_ELEMENT
GET_CURRENT_URL
GET_PAGE_SOURCE
GET_TITLE
EXECUTE_SCRIPT
EXECUTE_ASYNC_SCRIPT
GET_ELEMENT_TEXT
GET_ELEMENT_TAG_NAME
IS_ELEMENT_SELECTED
IS_ELEMENT_ENABLED
IS_ELEMENT_DISPLAYED
GET_ELEMENT_LOCATION
GET_ELEMENT_LOCATION_ONCE_SCROLLED_INTO_VIEW
GET_ELEMENT_SIZE
GET_ELEMENT_ATTRIBUTE
GET_ELEMENT_VALUE_OF_CSS_PROPERTY
ELEMENT_EQUALS
SCREENSHOT
ACCEPT_ALERT
DISMISS_ALERT
GET_ALERT_TEXT
SET_ALERT_VALUE
SET_TIMEOUT
IMPLICITLY_WAIT
SET_SCRIPT_TIMEOUT
EXECUTE_SQL
GET_LOCATION
SET_LOCATION
GET_APP_CACHE
GET_APP_CACHE_STATUS
CLEAR_APP_CACHE
IS_BROWSER_ONLINE
SET_BROWSER_ONLINE
GET_LOCAL_STORAGE_ITEM
GET_LOCAL_STORAGE_KEYS
SET_LOCAL_STORAGE_ITEM
REMOVE_LOCAL_STORAGE_ITEM
CLEAR_LOCAL_STORAGE
GET_LOCAL_STORAGE_SIZE
GET_SESSION_STORAGE_ITEM
GET_SESSION_STORAGE_KEYS
SET_SESSION_STORAGE_ITEM
REMOVE_SESSION_STORAGE_ITEM
CLEAR_SESSION_STORAGE
GET_SESSION_STORAGE_SIZE
SET_SCREEN_ORIENTATION
GET_SCREEN_ORIENTATION
CLICK
DOUBLE_CLICK
MOUSE_DOWN
MOUSE_UP
MOVE_TO
IME_GET_AVAILABLE_ENGINES
IME_GET_ACTIVE_ENGINE
IME_IS_ACTIVATED
IME_DEACTIVATE
IME_ACTIVATE_ENGINE
TOUCH_SINGLE_TAP
TOUCH_DOWN
TOUCH_UP
TOUCH_MOVE
TOUCH_SCROLL
TOUCH_DOUBLE_TAP
TOUCH_LONG_PRESS
TOUCH_FLICK
SET_WINDOW_SIZE
SET_WINDOW_POSITION
GET_WINDOW_SIZE
GET_WINDOW_POSITION
MAXIMIZE_WINDOW
GET_AVAILABLE_LOG_TYPES
GET_LOG
GET_SESSION_LOGS
GET_NETWORK_CONNECTION
SET_NETWORK_CONNECTION