You could dual license as well, so it’s GPL or AGPL for personal, OSS, or academic use, but requires a paid for commercial license for commercial use.

I suggest GPL or AGPL because their copyleft clauses make them hostile towards platform providers who might otherwise seek to profit from your work without paying.

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j1elo 36 minutes ago | parent | next [-]

Platform providers can take (A)GPL code as-is and totally profit from it without paying.

As long as they keep releasing sources of their own modifications -if they ever do any-, the rest is fair play.

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bartread 27 minutes ago | parent [-]

Yeah, but the copyleft makes anything they build around it a derivative work that they also have to release sources for - especially with AGPL. Most don’t want to do that because that’s where their IP lives.

Not all open source licenses are copyleft licenses (e.g., MIT very much isn’t), but at the very least copyleft licenses make it much harder to exploit open source code commercially without giving back in some way, whether that’s code, or cash for a commercial license.

Not perfect, by any means, but definitely an improvement over more permissive licenses.

I am aware of how much I’m starting to sound a bit like RMS in my old age.

	▲	j1elo 9 minutes ago \| parent [-]
		I wholeheartedly agree. Licensing is a complex topic of which I've read a good deal, and even within the Open Source communities there are usually a lot of misconceptions, so I like chiming in with less commonly pointed but very practical effects of it all, in case it helps someone to learn a tiny bit that day. In this case the provider would of course have to comply with the AGPL and release their modifications as you mention, but it's important to note that No FOSS license protects at all against, for example, just offering the code as a service. It's the exact reason why Mongodb changed licenses and then a stream of commercial products started to change into "Source-Available" licenses in the recent past.

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tracker1 22 minutes ago | parent | prev [-]

It would be dual license effectively... the base version AGPL and the Commercial version with additional functionality. Though I'd considered BSL and alternatives... and as mentioned, just closed/commercial only.