• Download and install the unregistered version, using the link below.
• Try it out till you are satisfied. You have a 30-day free trial for personal evaluation only.
• To use the software beyond the trial period or for any purpose other than evaluating it, buy your registration. Your licence and unlocking key will be sent by e-mail. No re-installation of the software is necessary.

Concordance is fully copyrighted commercial software.

The unregistered version is freely available for download.  You may try it out for personal evaluation only for 30 days, after which it will cease to work unless you register.  The unregistered version is fully functional, but adds 'Unregistered' messages to the files you create with it.  You may not distribute or publish materials which you make with the unregistered version, nor may you put them on the Web. You may not use the unregistered version as part of an educational course, either as teacher or as student, nor install multiple copies of it, nor make it available to others.  You are bound by further licence terms and conditions in the program's help file: please read them carefully.

If more than one person will be using the program at the same time, you must register a copy for each of them. If you want to install the program on more than one computer, you must buy additional copies. This applies even if you want to use one copy at work and another at home. Prices for additional copies are low. Click 'Buy now' in the menu above for full information. And upgrades are free to registered users for the foreseeable future.

When you download and/or open the file you may see a popup message entitled "Security Warning" or warnings about an "Unknown publisher." You can safely ignore these. If you need reassurance about the program's author and publisher, see this page.

• Download the file using the link above.
• Run the file you have downloaded (called conc330.exe).
• You will be guided through the installation.
• You may safely ignore warnings from Windows about an 'Unknown publisher'. These occur because I prefer not to pay an annual tax to Microsoft.

The software is for Windows 7, Vista, XP, 2000, and NT 4.0 and Windows ME and 98. It is not supported on Windows 95.

On Windows 7, Vista, XP, 2000, and NT 4.0 administrator privileges are needed to install and use the trial version of Concordance, but the registered version can be run with an ordinary user account.

Concordance is designed to be sparing of memory (RAM) even when handling large files, and if your system runs other Windows programs well, it should have enough RAM to run Concordance.

The software uses around 5MB of disk space when installed. Making concordances to large texts can use a lot of disk space!

Macintosh users: There is no native version for the Mac, but plenty of users have reported that the program runs on a Mac using a PC emulator, though this may be slow. A few people have encountered problems, so I don't make promises about Concordance's suitability for the Mac. The 30-day free trial will enable you to discover whether it works well for you. Please note that the lack of a native Mac version does not imply I have anything against the Mac: it's just that the programming tools that would let me port Concordance to the Mac do not exist.