Web vs. Windows Uploader

All UploadZen Upload Actions technically support two uploader modes:

• Web Uploader — the default, recommended, "new" uploader mode supporting the widest range of client browsers and operating systems.
• Windows Uploader — the "old", deprecated mode included and supported only for legacy UploadZen installations. For new installations, Web Uploader is the recommended mode.

	Web Uploader	Windows Uploader
Summary	Primary UploadZen mode, receives full support, maintenance and future enhancements	Legacy UploadZen mode, will not receive future enhancements
Supported SharePoint versions and editions	SharePoint 2010 Foundation (SPF), SharePoint 2010 Server (SPS) WSS 3.0, MOSS 2007	SharePoint 2010 Foundation (SPF), SharePoint 2010 Server (SPS) WSS 3.0, MOSS 2007
Client-side plugin requirement	Adobe Flash 10 (or higher) — or — Microsoft Silverlight 4 (or higher)	Internet Explorer: none (needs .NET) Firefox: .NET Framework Assistant
Supported client-side operating systems	All	Windows XP and 2003 only, with .NET Framework 2.0 or higher installed
Supported client-side web browsers	All	Internet Explorer 6 - 8, or Firefox
Automatic check-out / batch check-in	Yes	Yes
Overwrite existing files	Yes by default, can turn off	No by default, can turn on
Server-side extraction of uploaded ZIP archive files	Yes	Yes
Client-side zipping of files prior to upload	Silverlight: yes, Flash: no	Yes
Chunking for large files	Yes	No
Auto-resize images prior to upload	Yes	No
Show preview thumbnails of upload files	No	Yes