Hl7Spy 1.6.4160 offers users with an easy to use yet smart program which enables HL7 analysts and programmers to quickly interpret, and characterize very large HL7 message streams. It quickly reads hundreds of thousands of messages and provides statistics at the message, field, component and subcomponent levels providing great insight into the nature of the data exchange.

1. Load - quickly load files, from 1KB to 100MB and more.  HL7Spy will load 100,000 messages in less than a couple of seconds! Additionally, HL7Spy will auto detect most file types, and allow you to specify the format of particularly unusual files.  Zipped files can also be opened directly.
2.  View - see messages in an easy-to-read layout, with field names and values decoded according to the HL7 standard.  There are also many additional viewing features, such as normalizing encoding characters for better readability, highlighting fields by name, and viewing only relevant fields for each message.
3. Edit - edit message directly, or use the Segment Editor to deal with field locations and escape characters automatically.  The editor includes all the features you've come to expect, such as full Undo and Redo.
4. Hex Editor - view/edit the raw HL7 message bytes. Search for invalid characters within the message stream.
5. Search - build complex queries against whole messages or particular fields.
6. Sort - sort large message collections based on the fields important to you.
7. Analyze - generate statistics showing the unique values in each field, and quickly drill down to the messages with interesting content.
8. Report - generate, save and print reports on large groups of messages.
9. Send - send messages over the network using MLLP. View ACKs and/or NACKs, change message character encoding, and message framing bytes.
10. Receive - receive messages on an unlimited number of ports. Search, view, and analyze messages as they are being received.
11. Save - save all or some of the messages out to new files, with whichever file format and encoding you need.  Advanced save functions include the ability to merge files.
12. Detect Character Encoding - character encodings are detected automatically, and multi-byte encodings (such as Japanese) are fully supported.
13. Search HL7 Standard - search the HL7 standard, viewing segment, field and component names, and see any tables associated with a field
14. Validation – use c# (vb coming soon) to write sophisticated validation routines, well beyond the simple table validation available in other tools. For example, validate the proper exam states transitions, or verify patient names are not modified during an ORM, or ORU update. Anything is possible!
15. Transformations – modify messages using HL7 defined classes and full intellisense. For example: pid.PatientName_05="SMITH^JOHN^D" sets PID-5 within the message to SMITH^JOHN^D.

• Add support for Sub-Component statistics - Requested by David White
• Allow editing of the HL7Path in the Advanced Statistics Dialog - Requested by David White
• Show path when user right-clicks and chooses a select field query. - Requested by David White
• Support returning sub-components in advanced statistics - Requested by David White
• Change the context menu's to include the HL7Path of the field the statistics are being calculated for. - Requested by David White
• Update Image on Field statistics based on the Statistics type - Requested by David White
• Fix Desktop and Menu item icons - Reported by David White
• Empty Fields and Components should return null, if all the components, and subcomponents are null. eg NK1-2.* will return null all components and sub-components are empty.
• Add Advanced Statistics to right-click menu in HL7 Editor
• Fix NULL value queries 
• Error in the anonymizer code. - Reported by Mindy S.
• Add the Profile, Server and Database to the SQL Loader title bar description - Requested by Albert E.
• Make "Show Standard Encoding Characters" false by default
• Fix issue where offsets get out of sync when switching between Standard and non-Standard message encoding
• Updates to support interpreting date/time data types
• Fixed issue where the last line in the message was not getting a line number
• Select CONCAT(`data`,"ZET|",`ocischema`,"^",`et`,"|") not appending ZET| segment. Reported by Albert E.
• Fix issue where editing a field that does not exist in the SegmentEditor causes the offsets of the highlighting to be incorrect 
• Fix the cut/copy functionality in HL7Editor
• Show Fraction of seconds for datetime values with milliseconds>0
• Fixed issue where the List of queries is not being saved per profile. - Reported by Albert E.
• Allow canceling during the Unzipping of a file
• Parsing error found by Gary M.
• Highlight fields within the message based on the name of the field - Requested by Glenn B.
• Link Diff Tool to active message - Requested by Peter H.
• Link Tool Improvements 
• Add "SELECT INTO" to the right-click context menu of the HL7 Editor
• Add Start/Stop button to the HL7 Mllp Receive window. - Requested by internal users
• Add the ability to pop out the HL7Editor window into its own window.

• NET Framework 3.5