The LibreOffice project was announced with great fanfare in September 2010. Nearly one year later, the OpenOffice.org project (from which LibreOffice was forked) was cut loose from Oracle and found a new home as an Apache project. It is fair to say that the rivalry between the two projects in the time since then has been strong. Predictions that one project or the other would fail have not been borne out, but that does not mean that the two projects are equally successful. A look at the two projects' development communities reveals some interesting differences.
M. De Wael, S. Marr, and T. Van Cutsem. Proceedings of the 2014 International Conference on Principles and Practices of Programming on the Java Platform: Virtual Machines, Languages, and Tools, page 39--50. (September 2014)(acceptance rate 39%).