The most portable code: Fortran!
The title might not be fully correct, but pretty close to. To start with I consider here only purely compiled programming languages. I.e. no scripting (no web browser). Then probably as the C programming language is used to build most of the tools, it deserves the first position.
Then indeed, this blog is to advertise the publishing of one of my old library and fortran framework. A bit of shouting cannot harm. But, somehow, I came up with this title for few reasons. For the impatient, this is here https://github.com/mariotti/freemol.
The quest for the ID
The ID. The IDentification Number (or code) is used everywhere and most of the time it is crucial for software applications and for business; “most of the time” also crucial for personal identification.
I would start with noting that indeed the email address is a major example of ID which is simply understood by most of the people. It is unique across the Internet world.