Open Live Writer (also known as OLW) is a free and open-source desktop blogging application released by .NET Foundation.

Open Live Writer features WYSIWYG authoring, photo-publishing and map-publishing functionality, and is currently compatible with WordPress.com, WordPress (hosted), and Blogger, with support for more platforms planned.

[3] On June 12, 2014, Scott Hanselman announced the idea of making Windows Live Writer open-source.

[6] The announcement notes that the original Windows Live Writer 2012 application will remain a property of Microsoft and will continue to be offered as part of Windows Essentials while Open Live Writer will be developed independently as a separate project as part of .NET Foundation.

[7] A downloadable preview version of the application was offered the same day[8] alongside the full source code on GitHub.