LINQプロバイダをまとめてみました。いろいろありますね。
Linq To Oracle
The Linq To Oracle project provides a custom query provider for Oracle databases. ...
LINQ to Active Directory
LINQ to Active Directory implements a custom LINQ query provider that allows querying objects in Active Directory. ...
LINQ to LDAP
LINQ provider built on top of System.DirectoryServices.Protocols for querying and updating LDAP servers. ...
Excel.Linq
LINQ to Excel ...
LINQ to Outlook
A LINQ provider for queries against items in Outlook. ...
LINQ to SharePoint
LINQ to SharePoint is a custom LINQ query provider implementation for SharePoint that translates LINQ queries to CAML in order to query SharePoint lists. ...
Linq To WMI
This CodePlex project was added to maintain an open source version of those implementations for using WMI through Linq. ...
LINQ-to-T-SQL Provider Framework
A LINQ-to-T-SQL IQueryable LINQ provider I created to enable a real-life ADO.NET data-access layer f ...
LINQ to XSD
The LINQ to XSD technology provides .NET developers with support for typed XML programming. ...
LINQtoCRM
The Linq to CRM project provides a custom query provider for Microsoft Dynamics CRM/xRM (mscrm). ...
LINQ to Twitter
LINQ to Twitter is an open source LINQ Provider for the Twitter micro-blogging service. ...
Linq to Google
Linq to Google shows an example of implementing IQueryable and IQueryProvider. ...
Linq to Wikipedia
LINQ to Wikipedia is a custom LINQ query provider implementation for the Mediawiki API that translat ...
LINQ to Ebay
LINQtoEbay is a custom LINQ query provider that allows querying Ebay items in an Ebay Site. ...
Linq To SimpleDB
A Linq provider for Amazon SimpleDB ...
以下2012/10/24追記
linq.js - LINQ for JavaScript - Home
ltxml.js - LINQ to XML for JavaScript - Home
Features Largely compatible with LINQ to XML for .NET Based on the excellent linqjs project Suppor ...
