kristall is along with geminaut and lagrange, the perfect triptych for wandering the small web! until recently they were the only ones to pass (almost) torture tests [1]! highly recommended
[1] gemini://gemini.conman.org/test/torture/
[1] gemini://gemini.conman.org/test/torture/
There's also JGemini (https://github.com/kevinboone/jgemini), a cute little 107kb jar file that's also a full GUI browser. Yes! 107kb:-) Also x-platform and portable (java -jar ./jgemini-1.0.jar). Not many features (no tabs, just multiple windows) but it's a good example of how quickly browsing solutions can be built when markup is reduced.
That is... you don't need billions of dollars and a decade to present a viable solution in this space.
GeminiSpace actually reminds me much of the early days of the web. People will complain about the limited markup. For some users, the additional security/privacy of the protocol and the reduced 'noise' makes this appealing.
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Gemini (protocol), Gemtext format:
Triptych definition: a set of three associated artistic, literary, or musical works intended to be appreciated together.