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Epsilon 2.1

The simplest way to get a copy of Eclipse with Epsilon 2.1 and all its dependencies installed, is to download the Eclipse Installer and select Epsilon. Note that you will need a Java Runtime Environment installed on your system.

Epsilon in Eclipse Installer

OS Eclipse Installer

Can't find Epsilon?

If you don't see Epsilon in the list, click on the three vertical bars on the top right, then Product Catalogs and check " Applications". Epsilon should be near the bottom of the list (you can also use the search bar). If the Product Catalogs option is missing, switch to Advanced Mode and look for Epsilon under " Applications" (if this category is missing, click on the small yellow folder icon in the top right corner and select it). Keep pressing Next (you don't need to change anything) and then Finish. Accept the licenses when prompted.


Please do not select the Epsilon project on the second page of the installer in Advanced Mode. This is for Epsilon developers only and may cause issues during installation of the Epsilon product.

Update Sites

Alternatively, you can use the following update site through the HelpInstall new software menu in Eclipse to install (parts of) Epsilon.

Site Location

Eclipse failing to find dependencies?

While Epsilon update sites contain references to all 3rd party dependencies and shouldn't require installing any prerequisites separately, Eclipse's installation system (p2) can be temperamental and occasionally fail to find external dependencies. In this case, installation can fail with the following message: Cannot complete the install because one or more required items could not be found.

When this happens, please untick the Contact all update sites during install to find required software option and try again. Alternatively, you can try installing Epsilon through the Eclipse installer (see above), which is more reliable. If none of this works for you, please post a message to the forum.

Archived Update Sites

Below is also a link to a compressed version of the Epsilon 2.1 update site for long-term archival and to support users who are behind corporate firewalls.

Site Zip Archive

Source Code

The source code of Epsilon 2.1 is in the following Git repository.

Type Location
Release tag


Epsilon JARs are available from Maven Central. For instance, to use the EOL engine JAR from your pom.xml: