Comment by pjmlp

Vita Nuova is still up, so some people are using it somehow and keep the infrastructure running.

Also even though it started as an anti-Sun/Java project from Bell Labs, it was also taken as an opportunity to fix Plan 9 design errors.

Rob Pike for example, has some quotes on how he thinks it was a mistake not to add automatic memory managemet to Alef, and going back to C replacing Alef.

Inferno's approach to a fully managed userspace with a JIT, something that in modern times ChromeOS and Android is what we have closest to in mainstream computing, is also why there are some Limbo features not yet available in Go, like proper plugins (the current package isn't really it), although maybe one could argue net/rpc is the answer there.