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COMPARISON CHART
 
The chart shown below has been derived from the documentation available for the compared products. The first column lists the features and capabilities we used for comparison. Most features are linked to sections of the WebORB user guide so provide additional context. If you believe some features are not represented properly for the competing products, please let us know.
 
Feature/Product WebORB DWR Ajax.NET Sajax
General
Available for Java   ●   ●       ●
Available for .NET   ●       ●   ●2
Product documentation available   ●   ●   ●    
Deployment
No need for client stub files   ●            
Zero design-time configuration   ●            
Supports drag and drop application deployment   ●            
Can be deployed into any servlet container   ●   ●        
Integration with 3rd parties
Supports XML Web services binding   ●       ●    
Works with the Spring framework   ●   ●        
Database integration
Supports client side database binding   ●       ●    
Supports client-side data paging   ●            
Client/server invocations. Type marshalling
Supports synchronous invocations   ●            
Supports asynchronous invocations   ●   ●   ●   ●
Can serialize Java Bean classes as return types   ●   ●        
Can serialize non Java Bean classes as return types   ●   ●1        
Can serialize Java Bean classes as method arguments   ●   ●        
Can serialize non Java Bean classes as method arguments   ●            
Supports object activation (request, session, application, custom)   ●4   ●   ●3    
Supports server-side exception serialization and client side exception handling   ●   ●   ●    
Supports client-side callback context           ●    
Supports serialization of native .NET collections   ●       ●    
Supports custom serializers   ●4       ●    
Can serialize custom .NET complex types   ●       ●    
Can serialize Properties from custom .NET complex types   ●            
Can serialize bitmaps           ●    
Can serialize HtmlElement controls           ●    
Supports named services to hide native class names/namespaces   ●4       ●    
Supports response caching           ●    
Supports mappings between client classes and server-side types   ●            
Security
Can secure server side resources by namespace, classname or method name   ●4   ●        
Supports custom authentication and authorization handlers   ●4   6        
Allows user credentials to be set on the client side and be processed by user security handlers   ●4            
Allows encryption of user credentials (above and beyond SSL)   ●            
Server Management and Configuration
Provides comprehensive management console   ●4            
Can be configured with an XML-based configuration file   ●   ●        
Support multiple level logging policies (specific file, rolling logging, file size-limit logging)   ●   ●5        
Commercial availability/Support
Professional support available   ●4           ?
24x7 support available   ●4           ?
Maintained by a commercial entity   ●           ●
Cost   Free - Std
$799 - Pro		   Free   Free   Free

1 - requires custom configuration for each serialized class

2 - Only ASP, but not ASP.NET or plain C#, J# or VB.NET classes

3 - Documentation and example is available only for storing data in session

4 - Features are available only in WebORB Professional

5 - Only with commons-logging installed

6 - DWR authors pointed to the following documentation page where the feature is supposedly described: http://getahead.ltd.uk/dwr/server/servlet/plugin. It it is not obvious from the documentation page how the feature works.
 
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