For Mac, yes and no. IIRC you don't need a developer's license to build and sign software for yourself. But you do need one to distribute pre-built software.

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watermelon0 8 hours ago | parent [-]

You can still run unsigned software, but you need to approve 2? prompts, and also allow exception for every executable by going to Privacy & Security tab in settings.

IIRC there is a CLI command for achieving the same.

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saagarjha 5 hours ago | parent [-]

You can’t run unsigned software on Apple silicon. Note that when you build your software if you use Apple’s tools it will inject an ad-hoc signature into the product.

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kragen 5 hours ago | parent [-]

That seems like it would interfere with reproducible builds.

	▲	saagarjha 5 hours ago \| parent [-]
		The signature that gets added is vaguely a hash of the binary. You probably want to look at the UUID that gets injected into your binary instead of this.