[sntran]

Can't find out if this supports encryption, or streaming from stdin and/or to stdout. I haven't found one zip tool that does the above.

[exposition]

At the moment it doesn't- if it's something you're looking for, please open an issue.

I didn't want to go down the route of implementing a bunch of features without there being a actual need for them, especially for an initial version.

[lifthrasiir]

Info-ZIP (aka zip(1)) does, assuming that a heavily flawed standard encryption and a single file input from stdin suffices.