Guiffy Software (http://www.guiffy.com/) released version 8.4 of their comparison product. Let’s take a look.
Guiffy 8.4 is a Java application, so virtual Java machine must to be installed in your system to run the program (my Java Runtime Environment 6 with update 6 correctly recognized and program was started). Distributive size is about 31 megabytes and installed to 87 megabytes.
This program is shareware, so after running yon can either run 21-day evaluation version with restriction to 321 lines per file or request temporary registration key to discard this restriction. I’ve filled in a form on the site but unfortunately didn’t receive temporary key, so I tried with small files.
      Interface of Guiffy is very simple and clear; you can find most of necessary functions available as button in the main window: diff, merge, and folder compare options, etc. Open files/folders dialog allow to not only choose required files/folders for comparison but can also help you to merge differences in files after comparison to the first or the second choosen file. Of course standard comparison is also available so you can see differences or changes in the files on split window and edit or correct if needed. Report in Guiffy is the full copy of compare window just generated into HTML. It’s very interested feature as data in the report absolutely the same as you see it in comparison window. You can easily open report in any suitable editor and correct it or just print from your favorite browser with all appearance.
      Very useful feature is command line interface and possibility of integration with the most popular CM systems: AccuRev, Allfusion Harvest, ClearCase, CMSynergy, Dimensions, MKS Integrity, Perforce, PVCS, StarTeam, and           Visual Studio Team Foundation Server.
As Java-based Guiffy is cross-platform application so can be used on operation systems like: Windows, Linux, MacOS, and UNIX.
A Single User license costs $66(dollars U.S.) and entitles you to use Guiffy on an unlimited number of platforms. Includes 12 months of Support, Updates, and Upgrades.