Web based SVN client

I have what I hope is a quick and simple question.

We have a requirement that we have some developers who do not have a laptop
nor a Citrix VDI and they need to be able to be able to make changes to
code within SVN. They have asked me if there are any applications which
would run in Tomcat/JBoss/WebSphere and allow them to work with code in
SVN. The closest thing that I was able to locate was "WebClient for SVN"
by Polarion Software:
https://polarion.plm.automation.siemens.com/products/svn/svn_webclient.

Thanks

-- 
Matthew Hamilton