Webdriver Manager 
A selenium server and browser driver manager for your end to end tests. This is the same tool as webdriver-manager from the Protractor repository.
Note: Version 9 and lower please reference pose/webdriver-manager. If there are features that existed in version 9 and lower, please open up an issue with the missing feature or a create a pull request.
Getting Started
npm install -g webdriver-manager
Setting up a Selenium Server
Prior to starting the selenium server, download the selenium server jar and driver binaries. By default it will download the selenium server jar and chromedriver binary.
webdriver-manager update
Starting the Selenium Server
By default, the selenium server will run on http://localhost:4444/wd/hub.
webdriver-manager start
Other useful commands
View different versions of server and driver files:
webdriver-manager status
Clear out the server and driver files. If webdriver-manager start does not work, try to clear out the saved files.
webdriver-manager clean
Running / stopping server in background process (stopping is not yet supported on standalone server 3.x.x):
webdriver-manager start --detach
webdriver-manager shutdown
Help commands
Wedriver-manager has a main help option: webdriver-manager help. There are also other built in help menus for each of the commands. So for example, if you would like to look up all the flag options you can set in update, you could run webdriver-manager update help.
Here are a list of all the commands with help:
webdriver-manager update help
webdriver-manager start help
webdriver-manager clean help
webdriver-manager status help