We present a dataset of open source software developed mainly by enterprises rather than volunteers. This can be used to address known generalizability concerns, and, also, to perform research on open source business software development. Based on the premise that an enterprise's employees are likely to contribute to a project developed by their organization using the email account provided by it, we mine domain names associated with enterprises from open data sources as well as through white- and blacklisting, and use them through three heuristics to identify 17,264 enterprise GitHub projects. We provide these as a dataset detailing their provenance and properties. A manual evaluation of a dataset sample shows an identification accuracy of 89%. Through an exploratory data analysis we found that projects are staffed by a plurality of enterprise insiders, who appear to be pulling more than their weight, and that in a small percentage of relatively large projects development happens exclusively through enterprise insiders. The creation process is documented through rules in make files in this directory and in the data directories. An installed version of the GHTorrent dataset in a PostgreSQL database is required for running the queries. The name of the database and access credentials can be adjusted through Makefile variables. The running of the SQL queries is automated through the simple-rolap system, which is installed automatically. For running the tests (with make test) and installation of the relational database unit test system rdbunit is required.