- Installation
- Un-installation
- Beta Versions
- Changes Between Releases
- Support
- Known Issues


Rainbow runs on any version of Windows that can run the Microsoft .NET Framework v2.0 or higher: Windows 98, Windows 98 SE, Windows ME, Windows NT 4.0 (all versions—Service Pack 6a required), Windows 2000 (all versions—no Service Packs required), Windows XP Professional, Windows XP Home Edition, and Windows Vista.

If you do not have Microsoft .NET Framework 2.0 runtime files installed, the installation will be interrupted and you will be prompted to install the framework. Once the framework is installed you can re-run Rainbow's installer.

If you have already on your system...

To install Rainbow:

  1. Download the installation package from http://sourceforge.net/project/showfiles.php?group_id=42949
  2. Open or unzip the ZIP file
  3. Execute the RainbowInstaller.msi file
  4. Follow the installation instructions. Note that if you have several Okapi applications installed (like Rainbow and Olifant), you should select the same installation folder (by default: "C:\Program Files\Okapi") for all of them.

Tikal and some utilities and filters can also be used under Mono, on various OS such as Windows, Linux, and Mac. For information about how to install and work with the subset of Okapi Tools available for Mono, see the Okapi for Mono page.


To un-install Rainbow:

  1. Go to the Control Panel.

  2. Select Add/Remove Programs.
  3. Select the entry for Okapi Rainbow.
  4. Click Remove.

In some cases you can also directly re-run the installer: if the application is already installed and if the version is similar, it will ask you if you want to remove it or repair it. Simply select the removal option.

Beta Versions

Some utilities or filters may be labeled "Alpha" or "Beta" because they are not completely developed. As a general rule you should avoid using such components for real project work. Sometimes, the equivalent filters or utilities may be available in the "old" version of Rainbow (v4.x) which can be installed and run independently from Okapi Tools. Rainbow v4 can be found here.

Changes Between Releases


If you have questions, suggestions or bug to report, you can do this different ways:

Known Issues

Reported known issues are listed in the Bug List pages.