• SeleniumLibrary; Keyword examples: Click Element / Button; Wait until...; Should be visible; Run keyword if
• BuiltIn; Keyword examples:  Comment; for verifications (e.g. Should Be Equal, Should Contain), conversions (e.g. Convert To Integer) and for various other purposes (e.g. Log, Sleep, Run Keyword If, Set Global Variable).
• Askida Embedded Keywords: IF / ELSE IF / ELSE;AND/ FOR / END FO

For tests concerning mobile applications:

• AppiumLibrary; Keyword examples: Launch Application; Click Text; Get Source; Hide Keyboard
• BuiltIn; Keyword examples: Log; Comment
• Alithya GoTest Embedded Keywords; IF / ELSE IF / ELSE;AND/ FOR / END FOR
• Using BrowserStack 2A_BrowerStack|

• DatabaseLibrary; Keyword example: Check If Exists In Database /  query your database after an action has been made to verify the results
• Sample Database Test Script

For testing on APIs with REST:

• RequestsLibrary; example of a keyword: Create Session & Get Request Creates a session and an HTTP request to fetch data. It can download any file, including HTML, JSON or XML files.
• Get (REST API - GET request)  Uses the keyword "Get" to send a GET request to a REST API service. 

For tests on APIs with SOAP:

• SudsLibrary; example of a keyword: Create Soap Client & Call Soap Method Creates a SOAP client connection to a SOAP server. Then, it will use a SOAP method on this server and retrieve the results.
• Create Wsdl Object & Set Wsdl Object Attribute Creates a Wsdl Object that can contain 2+ attributes. The Wsdl Object can be used to send all these attributes together.

You need to test a contact form, but you have no data. You can use FakerLibrary to generate random data. Example of keywords:

• First Name;
• First Name Female
• Adress;
• Compagny Email;
• Credit Card Number

The String Library. Example of a keyword:

• Keyword: Substring Extracts part of a text. Example #1: Extracts "AAA" and then "BBB CCC" from the text "AAA BBB CCC".

Keyword: String (REST API - Asserts String Value)
This keyword asserts a string value in the last received API response. It can use JSONPath or a specific custom path to determine the position in JSON to validate. You can also use keywords such as  "Integer", "Boolean", "Object", "Array", and similar keywords for other types of fields to assert.

Collections: to manage lists. For example:

• convert to list 
• append to list 

DateTime Exemple de keyword :

• Keyword : Date Time Ad

Get a datetime object for a date between January 1, 001 and now

:param tzinfo: timezone, 
instance of datetime.tzinfo subclass
:example DateTime('1265-03-22 21:15:52')
:return datetime

• Keyword : Date Time This Month:

Gets a DateTime object for the current month.
param before_now:include days in current month before today
param after_now:include days in current month after today
param tzinfo:timezone, instance of datetime.tzinfo subclass
example DateTime('2012-04-04 11:02:02')
return DateTime

• Keyword : Date Time Between

Get a DateTime object based on a random date between two given dates.

Accepts date strings that can be recognized by strtotime().

param start_date Defaults to 30 years ago

param end_date Defaults to "now"
param tzinfo: timezone,instance of datetime.tzinfo subclass
example DateTime('1999-02-02 11:42:52')
return DateTime

• Keyword : Date Time This Century:

Gets a DateTime object for the current century.
param before_now:include days in current century before today
param after_now:include days in current century after today
param tzinfo:timezone, instance of datetime.tzinfo subclass
example DateTime('2012-04-04 11:02:02')
return DateTime