SA ID Number Tools is a free Chrome extension developed by Evan Knowles. It falls under the category of Browsers and is a useful tool for developers. This extension allows users to generate a valid South African ID number based on a given date of birth, gender, and citizen status. The generated ID number will pass checksum tests, ensuring its authenticity.

Additionally, SA ID Number Tools can validate existing South African ID numbers and extract information such as the date of birth, gender, and citizen status. This functionality can be accessed through the extension itself or via the context menu.