Ask HN: how do you archive/preserve your source code?

I'd like your input. When you're done with a software project (not open source), how do you preserve/archive your code?

Would you use something like longaccess.com as a long-term backup solution? (disclaimer: I'm the founder of longaccess)

If our service was immediately available, would you use it from the command-line, or would you wait for a desktop GUI?

Any feedback would be valuable. Thank you.