This was the last release under an open source license.

It was a "one man project", and the code wasn't released under an open source license.

The software has been released under an open source license.

All its components have been released under free software/open source licenses.

This book is available free under an open source license on the author's web page and blog.

This led to other parties developing such under open source license.

Scilab is available free of cost under an open source license.

After all, much of what Google used was under an open source license.

The tool is freely available under an open source license.

Parts of the new version were going to be provided under an open source license.