I've been kicking the tires on webpack recently. Works very well! In spite of its popularity, it seems to have a single maintainer though.
miniblog.
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Kicking the tires on https://mastodon.social/: https://mastodon.social/@wilfredh (so far, I'm impressed.)
I've been kicking the tires on GitLab. It's not quite a snappy as GitHub, but the feature set is excellent.