Microsoft OpenTech Brings SQLite to Windows Phone and Windows Store
Microsoft is now offering an official version of SQLite for Windows Phone, Windows Store, and .NET 4.5. The library is available as a Portable Class Library, so developers can use as a basis for their own portable libraries.
Internally the MS OpenTech library acts as a wrapper around the native implementations of SQLite that are available for ARM7, x86, and x64 platforms. (Though for .NET 4.5 only 32-bit mode is currently supported.)
The library is available as a NuGet package and the source code was released on CodePlex under the Apache 2 license. SQLite itself has been released in the public domain and has no licensing restrictions.
Microsoft Open Technologies is a subsidiary of Microsoft tasked with maintaining many of their open source projects. Besides SQLite they have a wide variety of projects related to MongoDB, Redis, Apache Cordova, CouchDB, and others. Most deal with either running these third-party technologies on Windows Azure or supporting Microsoft technologies on non-Microsoft platforms such as Eclipse.