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Open Platform for E-Learning (OPEL)

OPEL is a collection of software libraries designed for JADL Prototypes working with SCORM. These libraries provide common data and user interface services that enable prototype efforts to focus on unique value-added research. Data services include the ability to read and write SCORM conformant XML documents and map them to .NET Framework class definitions. User interface services include extendable design surfaces and a configurable user interface environment.

The OPEL libraries also provide a collection of working code that is being used to develop the Integrated Prototype Architecture (IPA).

More Information

Please feel free to provide comments on the project to the Joint ADL Co-Lab.

February CTP Released

The Joint ADL Co-Lab is pleased to announce the public availability of the February Community Technology Preview (CTP) of the Open Platform for E-Learning (OPEL). This release consists of an update to OPEL's embedded SCORM Run-Time Environment.

The February CTP is considered to be the Alpha 3 release. As such it should *not* be used for production. This release is for the community to examine OPEL and the ADL Workbench (provided as a part of the December CTP), to provide bug reports, and comment on where you would like the project to go in the future.

This release provides:

  • Loading/modification/saving of the SCORM DOM
  • An update to the embedded SCORM Run-Time Environment (RTE)

This release does not provide:

  • Any guarantees not to shred your data if you try to use it on production systems. This is an alpha!
  • The ability to import existing courses
  • The ability to import resources
  • The ability to modify sequencing, navigation, or metadata settings

This release is for preview purposes only! The best way to experience this release is to open an existing piece of courseware. There are several suitable courses available on the ADL website at http://www.adlnet.gov. If you are a developer, you can also try building your own applications by referencing the OPEL libraries.


December CTP Released

The Joint ADL Co-Lab is pleased to announce the public availability of the December Community Technology Preview (CTP) of the Open Platform for E-Learning (OPEL). This release consists of three packages:

  1. A set of core libraries that provide a complete SCORM Document Object Model (DOM).
  2. An embedded SCORM Run-Time Environment (RTE).
  3. The "ADL Workbench" application.

The workbench is built on top of the core OPEL libraries and RTE, and provides a simplified content packaging experience. The workbench is built to be extensible, so potential future releases could include the ability to include 3rd-party modules to perform specialized functions.


The December CTP is considered to be the Alpha 2 release. As such it should *not* be used for production. This release is for the community to examine OPEL and the ADL Workbench, to provide bug reports, and comment on where they would like the projects to go in the future.


This release provides:

  • Loading/modification/saving of the SCORM DOM
  • An embedded SCORM Run-Time Environment (RTE)
  • A "debugging" function in the ADL Workbench that will automatically launch the embedded RTE against the loaded course

This release does not provide:

  • Any guarantees not to shred your data if you try to use it on production systems. This is an alpha!
  • The ability to import existing courses
  • The ability to import resources
  • The ability to modify sequencing, navigation, or metadata settings

This release is for preview purposes only! The best way to experience this release is to open an existing piece of courseware. There are several suitable courses available on the ADL website at http://www.adlnet.gov. If you are a developer, you can also try building your own applications by referencing the OPEL libraries.



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