'bridging cultures & improving education through better dictionaries & terminology'
Version 2020 released for TLex, tlTerm, tlCorpus, tlDatabase (32/64-bit Windows & macOS. What's New) All users may upgrade.
Watch tlTerm easily load millions of terms »
macOS Catalina versions available »

terminologyDownload: tlTerm Standalone - Termbase/Terminology Software

Software EULA (End User License Agreement) »

This is "tlTerm Standalone". (If you purchased "TLex Suite", go here instead)

Please read these instructions carefully. Select a download link below:

News: Version 2020 has been released! Major new features include 64-bit versions on both Windows and macOS.

All existing licenses have been automatically upgraded to the latest. Use your 9-digit License Number to activate (if you've lost yours, try the recovery form). Installs as trial version if unactivated.

Windows- Windows (64-bit and 32-bit):

download Download: tlTerm_Setup_12.1.0.3018.exe
To save the installer file to your hard disk, click on the link with the right mouse button and select "Save Target As". Once you have downloaded the file, run it (e.g. by double-clicking on it) to install the software. (If you already have an older version installed, this installer will automatically first uninstall the previous, and then install itself.)

- macOS 64-bit (new):

download Download: tlTerm_2021_12.1.0.3025.dmg
[For 64-bit macOS versions, such as Catalina, as well as Sierra, Mojave etc.] To install, open the DMG package, and drag the application icons onto your Applications folder.
If GateKeeper warns it is 'unable to check for malicious software', go to 'System Settings -> Security -> General' and add an exception to allow it to "open anyway" (see Apple site for more info).
If you get a message that the App is "damaged", then try either:
* Run Terminal, and enter: xattr -cr /path/to/TheApplication.app
* or, also in Terminal: sudo xattr -rd com.apple.quarantine /path/to/TheApplication.app
* and/or try rebooting or clearing your cache and re-downloading the DMG. Contact us if that still doesn't work.

- macOS 32-bit (old):

download Download: tlTerm_2019_11.1.0.2625.dmg
[^ final 32-bit version] To install, open the DMG package, and drag the application icons onto your Applications folder.
Important: Please note for 32-bit macOS, our final release will be version 2019 - you can still use it on 32-bit-compatible macOS systems, but new features and updates will only be in our new 64-bit (Catalina-ready) releases.
? Getting Help

• New to tlTerm? We suggest you start with the "Getting Started" section in the User Guide. and/or:

• Tutorial Videos (These are mostly TLex, but most of the information applies to tlTerm)

• FAQ: Frequently Asked Questions and "Tips and Tricks"

• TLex Mailing List » ('Unofficial')

• Support

• ChangeLog - Detailed list of new features in each release
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Software Activation

When you first run the software, it will ask to be activated. Simply follow the activation instructions carefully. You will need your 9-digit License Number (if you have lost or don't know your License Number, click here).

Re-activation is not usually required when updating. NB: If the software will be used by multiple Windows users on the same computer, you may need administrator rights at time of activation.


If you do not have a License Number, you can try out the software by clicking "EVALUATE" (some functional limitations may apply). See "Help/About" for the expiry date. At any time, you can purchase a License Number to activate the software and remove all limitations.

Internet Explorer Users

In Internet Explorer, you may need to follow the highlighted steps below (click "Actions", "More Options", "Run anyway") if you see a popup that looks like the following:

IE Step 1: "Actions"

IE Step 1

IE Step 2: "More Options"

IE Step 2

IE Step 3: "Run Anyway"

IE Step 3