Hi,
I'm not sure I understand what you are trying to accomplish.
Websvn seems to be a web based frontend for accessing Subversion. TortoiseSVN is a Windows based software.
I saw that Websvn is using the svn command line client to access the repository. TortoiseSVN does compile and include this in the MSI installation file, but I'm not sure if you were just looking for a new command line executable or if you want to replace Websvn completely.
If you want to replace websvn with another web viewer of an SVN repository, I'd suggest to look at
https://viewvc.org/. It is written by C. Michael Pilato of Subversion fame.
(There are also project management applications, Redmine and Trac comes to mind, but these may be overkill depending on what you are looking for).
Kind regards,
Daniel Sahlberg