How can I find out the developer of an app from its APK file? Given only an APK file, how can I find out the developer of a non-market Android application?
A "non-techy way" would be, given the package_name, doing a web search on it. Chances are it's available on some store, which then would give you the developer's name.

A different way is, as indicated by ottucsak's answer, extracting it from the certificate. The way to do that is described here, and basically involves the following steps:


unpack the .apk file. As that's a .zip in its structure, unpacking would mean unzipping.
use keytool to view the certificate:
keytool -printcert -file META-INF\CERT.RSA
in the output, check for the "Owner" and "Issuer" lines.