The Indexing Service Companion is a web crawler utility that extends the functionality of Microsoft's Indexing Service* so that it is able to index and search content from remote websites hosted on any web server (including Unix/Linux/Apache), [sample search] and also from ODBC databases. As such it can be used as a low cost alternative to Microsoft's Site Server 3.0 Search or the search facilities of SharePoint Portal Server.
The Indexing Service Companion contains full documentation in HTML Help Format and sample source code for ASP (VBScript) and ASP.NET (both VB.NET and C#). The Indexing Service Companion is available for immediate online purchase. A free evaluation version is also available.