The What's Changed Library can compare words, strings, streams and files.  The differences can be exported to CSV, DataTables, Text and HTML.  The comparison result can be used to create your own comparison output.  Features include:

• Detects added, deleted, and changed lines
• Recognizes code block begin and end tags
• Case Sensitive or Insensitive Matches
• Option to ignore horizontal and vertical whitespace differences
• Ability to exclude textual differences by contains, starts with, ends with, or regular expressions
• Can output to CSV Streams and Files
• Can output to HTML Streams and Files
• Can output to DataTables
• Can output to Text Streams and Files