Available via add-on:
Not available:  
.NET 6+    
Annotation (Image Mark up)              
Barcode: 1D and 2D            
Common Dialogs    
Compression: Read ABC    
Compression: Write ABC              
Compression: ABIC              
Compression: CCITT    
Compression: CMP  
Compression: CMW  
Compression: Deflate (ZIPLIB)    
Compression: Image Optimizer    
Compression: JBIG              
Compression: JPEG  
Compression: JPEG 2000  
Compression: JPEG 2000 Part 2 (JPX)              
Compression: JPEG LS    
Compression: JPEG XR    
Compression: JPIP Client              
Compression: LZW    
Compression: RLE    
DICOM: Basic                        
DICOM: Data Set                        
DICOM: Communication                        
DICOM: Hanging Protocol                        
DICOM: PACS Client & Server                        
DICOM: PACS Workstation Framework                        
DICOM: Storage Server Framework                        
DICOM: Security                        
DICOM: Waveform                        
Document Analyzer                    
Document Compare (HTML5/JavaScript)              
Document Converter              
Document Editor (HTML5/JavaScript)                  
Document Framework              
Document Viewer (HTML5/JavaScript)              
Document Viewer (.NET)              
Document Writers              
DVD Creation            
Format: SVG            
Formats: General  
Formats: Document            
Formats: Multimedia                    
Formats: Vector              
Forms: General Forms Recognition & Processing                    
Forms: Business Card Recognition                  
Forms: Check Recognition & Processing                  
Forms: Identification Recognition & Processing                    
Forms: Invoice Recognition & Processing                    
Forms: Passport Recognition & Processing                  
HTML5/JavaScript Annotations                
HTML5/JavaScript Document Editing Control                  
HTML5/JavaScript Document Viewing Controls                
HTML5/JavaScript Dental Viewing Controls                          
HTML5/JavaScript DICOM Viewing Controls                          
HTML5/JavaScript Image Viewing Controls      
Image Display: Bitonal Scale to Gray              
Image Display: 12-16 bit Extended Grayscale              
Image Display: Special Effects    
Image Display: Medical Image Viewer                        
Image Display: Pan Window    
Image Display: Tiled Images    
Image Display: Window Leveling              
Image Processing: Color Conversion  
Image Processing: Color Space Conversion  
Image Processing: Document Cleanup              
Image Processing: Drawing  
Image Processing: Filters  
Image Processing: General  
Image Processing: Medical                        
Image Processing: MRC Segmentation              
Image Processing: Transforms  
Media Writer              
Medical 3D                        
MPEG-2 Transport                        
Multimedia Capture                  
Multimedia Compression                  
Multimedia Conversion                  
Multimedia Playback                  
Multimedia Processing                  
Multimedia Streaming                      
PDF: Read, Write, Edit, Compress          
PDF: View as Raster          
PDF: View/Convert as Vector              
PDF: OCR PDF Output                
PDF: Digital Signatures          
Print to PACS                        
Region of Interest  
SOAP & RESTful Web Services    
Scanning: Fast TWAIN              
Scanning: HTML5/JavaScript Web Scanning    
Scanning: TWAIN (32/64-bit Drivers)    
Scanning: WIA (32/64-bit Drivers)    
Screen Capture  
Speech Recognition                  
Virtual Printer (Print Capture)              
Xamarin Camera Control