ABAP Useful ABAP Package

Package	Title	Comments
SZP	R/3 Central Basis Development: Dialog Boxes...	Demo programs showing how to use Dialog Boxes in Reports
SWDP_TEST	Web Dynpro: Tests	Many many useful Web Dynpro applications, illustrate UI elements usage and important concepts in Web Dynpro
SWDP_DEMO_TUTORIALS	Webdynpro Demo Application	Demo Web Dynpro Application concepts with Flight Booking system, Quiz System
SWDP_DEMO	Webdynpro Demo Application	Contains many useful Web Dynpro applications that illustrate essential UI elements in Web Dynpro
SOFFICEINTEGRATION	Platform- and application-indep. Office integration	OLE. I haven't had chance to work with Office Integration.
SLIS	Generic list types	Contains pretty much useful and detail example with using ALV (REUSE_ALV_* and CL_GUI_ALV_GRID)
SIXML_TEST	XML Parser and Render	Demo program showing how to use class CL_IXML to parse XML file and create XML object
SGRC	ABAP Graphics Development: Network, Bar Chart	Demo programs showing how to use ABAP Graphics
SEU_TREE_CONTROL	OO Framework for Tree Control	I haven't had chance to work with Tree Control object.
SDW4	Packages for Demo Center from tCode DWDM	Programs that demonstrates objects in Control Framework (I havent had much opportunities to use it in Production)
SBCOMS	Business Communication Service	Demo programs showing how to use class CL_BCS to send documents (e.g. email)
SALV_WD_TEST	SALV WD Test	Test applications showing how to use SALV in Web Dynpro
SALV_OM_OBJECTS	ALV Object Model Basis Classes	Contains pretty much useful and detail example with using SALV (CL_SALV_TABLE)
SABAPDEMOS	Demos for ABAP Documentation	Many programs that demonstrate ABAP language concepts from ABAP Documentation
BC470	Training Course: BC470 - SAP Smart Forms	Contain programs that demonstrate Smartforms
BC427	BC427 Training Objects	Contain programs that demonstrate Enhancement Framework concepts (Classic BADI, New BADI, etc.)
BC417	SAP Training: BC417	Contain programs that demonstrate BAPI concept
BC412	Course BC412: ABAP Dialog Program with EnjoySAP Controls	Contain programs that demonstrate concepts in Dialog Programming
BC405	Training Course BC405: List Creation and Query	Contain programs that demonstrate concepts in Report Programming (e.g. ALV, Report Event, Logical Database)
BC401	Course: BC401 - ABAP Objects.	Contain programs that demonstrate some OO concepts in ABAP.
BC400	Training: BC400 - ABAP Workbench: Concepts and Tools.	Contain programs that show some fundamental concepts of ABAP
APB_FPM_DEMO	Floorplan Manager (Examples and Demo applications)	Demo applications for FPM to show concepts of Guided Activity Floorplan (GAF), Object Instance Floorplan (OIF)