A formatted version of https://pastebin.com/EZQWbwCB to make it easier to read. Written by Nick P., not by me. There is discussion on Lobste.rs.
(originally 2014 on Schneier’s blog; revised 2018)
I’ve noticed in recent debates a false dichotomy: you can have “open source” or proprietary, but not benefits of both. Developers thinking there’s only two possibilities might miss opportunities. This is especially true for users or buyers that are concerned about source copying, ability to repair things, or backdoors. The good news is there are many forms of source distribution available. The trustworthiness of review process also varies considerably. I’m going to briefly run through some of them here.