Microsoft has been open-sourcing a lot lately, but it seems to be mostly "peripheral" software...
The JDBC driver can be used to connect to SQL anywhere. Use it to connect to SQL Server (on-prem or in the cloud), Azure SQL Database, and Azure SQL Data Warehouse.
...associated with the use of their commercial products.
http://microsoft.github.io is a metasite with links to most of the Microsoft GitHub organizations and repositories. You can spend days flipping through all of it.
Same as everyone? Did you see Google open-sourcing their search engine? Or "only" libraries? I am rather happy to see some parts of Microsofts software stack open source than nothing.
The value of Google software is not in the software itself, but also in the data. Without it, running Google search software on your hardware would get you nothing.
The JDBC driver can be used to connect to SQL anywhere. Use it to connect to SQL Server (on-prem or in the cloud), Azure SQL Database, and Azure SQL Data Warehouse.
...associated with the use of their commercial products.