Indeed, we launched an MVP in Show HN a few months ago — dang messaged us and said we should apply to YC, which we did, and now we're launching here again, officially. :D
We will definitely support those frameworks too, eventually. Though, we think that each integration must be done very carefully — we'd rather have excellent support for one framework and capture its entire audience before going horizontally, than ten mediocre integrations that give our users a headache on setup. We went for Next.js first because a) it's the most popular JS framework for new projects right now, and b) existing Next.js auth is pretty shit.
We will definitely support those frameworks too, eventually. Though, we think that each integration must be done very carefully — we'd rather have excellent support for one framework and capture its entire audience before going horizontally, than ten mediocre integrations that give our users a headache on setup. We went for Next.js first because a) it's the most popular JS framework for new projects right now, and b) existing Next.js auth is pretty shit.