It is just a question of time that you will need a self hosted repository. You can avoid to use the public Chrome Webstore.
With the following steps you will have your own private Webstore in a couple of minutes. In the following days I will show you how to do it for the new Firefox (>= 45).
The Tutorial is dedicated to Windows 7, because most of my customer have Windoof, oh sorry, Windows.
Mac and Linux details are here and here.
Step One
Windows
For Windows, extensions can be installed via the Windows registry. Windows registry location:Software\Policies\Chromium\ExtensionInstallWhitelist.
Windows Examples:
ExtensionInstallWhitelist
Software\Policies\Chromium\ExtensionInstallWhitelist\1 = “extension_id1” Software\Policies\Chromium\ExtensionInstallWhitelist\2 = “extension_id2”
ExtensionInstallSources
Software\Policies\Chromium\ExtensionInstallSources
Window Example:
Software\Policies\Chromium\ExtensionInstallSources\1 = “https://corp.mycompany.com/*”
32-bit Windows: HKEY_LOCAL_MACHINE\Software\Google\Chrome\Extensions
64-bit Windows: HKEY_LOCAL_MACHINE\Software\Wow6432Node\Google\Chrome\Extensions
Step Two
Add. Information at:
Packaging Chrome Extensions: https://developer.chrome.com/extensions/packaging
Stackoverflow (2016): http://stackoverflow.com/questions/36440206/installing-self-hosted-chrome-extension
Self hosted and Autoupdate: http://stackoverflow.com/questions/36025927/self-host-autoupdate-google-chrome-extension
Developing Cross Browser Extensions: http://frontendbabel.info/articles/developing-cross-browser-extensions/