KLinkStatus is a link checker. It allows you to search internal and external
links in either your entire web site, a single page or a specified depth.
For performance, links can be checked simultaneously.

Features:

* Support several protocols (allowing fast checking of
local documents): http, ftp, ssh (fish or sftp) and file.
* Proxy support.
* Allows authentication when checking restricted documents.
* Supports the latest Web standards-- HTML 4.0, HTTP 1.1.
* Server-Side Includes (SSI, aka SHTML) are supported and checked.
* Regular expressions to restrict which URLs are searched.
* Show link results as they are checked.
* Tree like view (that reflects the file structure of the documents) or
flat view.
* Limit the search depth.
* Fragment identifiers ("#" anchor links that point to a specific
section in a document) are supported and checked.
* Pause/Resume of checking session.
* History of checked URLs.
* Tabbed checking (allow multiple sessions at the same time).
* Filter checked links (good, broken, malformed and undetermined).
* Configurable number of simultaneous connections (performance tunning).
* Other configurable options like "check external links",
"check parent folders", "timeout".
* Good integration with Quanta+.