SAPmvc

SAPChess is an open source game developed in ABAP. It Demonstrates that ABAP is much Stronger and more powerful than it seems. SAPChess was developed using new and old concepts, and this demonstrates that with the arrival of innovations ABAP hasn't lost its identity, it just became better.

SAPmvc is an Open Source framework created to introduce the MVC design pattern to the ABAP Classical Dynpro using the pure ABAP Objects.
By decoupling models and views, MVC helps to reduce the complexity in architectural design, and to increase flexibility and reuse. Because of this separation, multiple views and controllers can interface with the same model. Even new types of views and controllers that never existed before can interface with a model without forcing a change in the model design.

SAPlink is a project that aims to make it easier to share ABAP developments between programmers. It provides the ability to easily distribute and package custom objects. by Dan McWeeney & Ed Herrmann.

ESME (Enterprise Social Messaging Experiment) is a social tool that takes the immediacy of messaging and applies it to real time business process problem solving. Taking the concepts embodied in social networks such as tags and groups, ESME provides the business communications framework that allows for the fastest and most reliable way of discovering the best solution to everyday problems for people working in peer and extended networks. It reduces the risk of applying suboptimal solutions by surfacing the right people at the right time who can apply expertise to a given situation, allows the participation of mobile workers, integrates to existing systems and provides for contextually appropriate document attachments.
Read more at the ESME Blog.