HL7Spy is the fastest, most full-featured HL7 tool on the market. If you really want to get a taste for it, we recommend grabbing the free download and taking it for a test drive. However, if you just want an idea of what it can do, here is a sampling of some of the major features: Load quickly load files, from 1KB to 100MB. HL7Spy will autodetect most file types, and allow you to specify the format of particularly unusual files. View--see messages in an layout, and with field names and values decoded according to the HL7 standard.