Discoverer - Viewer , Plus and Desktop differences

These differences are for 10g versions, but they are pretty handy for making a general decision about the product type to use.
Reference: http://proudman.homestead.com

Function	Desktop	Plus	Viewer
Create / Edit Query	Yes	Yes	No
View Query With Dynamic Data	Yes	Yes	Yes
BI Beans Based Charting	No	Yes	Yes
Export To Microsoft Excel	Yes	Yes	Yes
Integrated With Oracle Single Sign-On	No	Yes	Yes
Create Worksheet Parameters	Yes	Yes	No
Apply Parameters To Worksheet	Yes	Yes	Yes
Create / Edit Conditions	Yes	Yes	No
Create / Edit Calculations	Yes	Yes	No
Save The Workbook	Yes	Yes	Yes
Schedule Workbooks	Yes	Yes	No
Export To XML	?	Yes	Yes
Export To PDF	No	Yes	Yes
Drill To Link	Yes	Yes	Yes
Cascading Parameters	Yes	Yes	Yes
OLAP Support	No	Yes	Yes
Command Line Interface	Yes	No	No
Text Area	No	Yes	Yes
Graphs created in Desktop	Yes	No	No
Email	Yes	No	Yes
Drilling to external program	Yes	No	No
Hyperdrill to URL	No	Yes	Display
Cascading Parameters	Display	Yes	Display
Optional Parameters	Display	Yes	Display
Conditional Formatting - (exceptions in Desktop)	Yes	Yes	Yes
Stoplight Formatting	Display	Yes	Display
Editing Stoplight colors	No	Yes	No
Edit worksheet dialog	Mandatory	Optional	No
Interactive Pivoting	No	Yes	Yes
Save to File system	Yes	No	No
Able to pick workbooks by user	Display	Yes	Display
Scheduling workbooks	Yes	Yes	No
Sharing workbooks	Yes	Yes	No
Sharing results of scheduled workbooks	No	Yes	No
Discoverer Connections	No	Yes	Yes
Corporate logo	No	Yes	Yes
Workbook logo	Yes	No	No
Customized screen	No	No	Yes(1)	1 - performed via Admin interface in OEM
Customized look and feel	No	Yes(2)	No	2 - Plus with Sun Java - 1 of 4 types (Browser, Oracle, Plastic and System). Plus with Jinitiator - Plastic defaults to Browser
Bitmaps in title	Yes	No	No
Resize column headings by sliding column separator	Yes	Yes	No
Create new worksheet by dragging out of current workbook	Yes	No	No
Rename worksheets	Yes	Yes	No
Interaction with SSO	No	Yes	Yes
Interaction with Portal	No(3)	No(3)	Yes	3 - workbooks created in Plus and Desktop can be made to display in Portal
Preferences stored in registry	Yes	No	No
Preferences stored centrally	No	Yes	Yes
Choose EUL on log in	No(4)	Yes	Yes	4 - set internally and must reconnect after changing
Analytic function templates	No	Yes	No
Graph templates - only in Plus	No	Yes	No
Count of all rows	Yes	No	No
Uncouple Discoverer from database while creating worksheets	No	Yes	No
Ability to create parameters that use indexes and values	No	Yes	No(6)	6 - cannot create in Viewer but can use if created in Plus
3D heading gridlines	No	Yes	No(6)
Interface	Client	Java	HTML
Change Password	No	Yes	Yes
Able to open multiple workbooks at same time	Yes	No	No
Able to copy worksheets between workbooks	Yes	No	No
Discoverer Timeout	No	Yes	No
Assiging user defined help	No	No	Yes(7)	7 - only but done via OEM
Automatically execute a worksheet	No	No	Yes(8)	8 - performed by passing in URL
Ability to schedule and export in one step - only in Desktop using command line interface and a third-party scheduler	Yes(9)	No	No	9 - using command line interface and third-party scheduler
Export to Excel iQuery - only available in Viewer	No	No	Yes
Export Crosstab to Excel pivot table	No	Yes	Yes
Subqueries - can only be created in Desktop but will work in Plus and Viewer	Yes	No(10)	No(10)	10 - subqueries created in Desktop will work in Plus or Viewer
Calendar style date picker	No	Yes	No