Graal and Truffle could radically accelerate innovation in programming languages

There’s one final catch worth knowing about. I said at the start I wanted everything I listed to be open source. Graal & Truffle are huge and very expensive endeavours written by skilled people who don’t come cheap. As a result, only some parts of what I’ve described are fully open source.

These bits are open and can be found on github or other repositories:

    Graal & Truffle themselves.
    The pluggable version of HotSpot they rely on.
    RubyTruffle
    Sulong (LLVM bitcode support)
    The R, Python 3 and Lua implementations (some of these are hobby/research projects).

And these things are not open source:

    TruffleC/ManagedC
    TruffleJS/NodeJS API support
    SubstrateVM
    AOT support

TruffleJS can be downloaded for free as part of the GraalVM preview releases. I don’t know how to play with TruffleC or ManagedC, although as Sulong implements some of their functionality, it may not matter much.

This looks very interesting, but the lack of comments here makes me wonder if it's being oversold a bit in the article? It sound like the Borg of languages, resistance is futile and future languages will be assimilated - at least languages that can bear the memory overhead of the system?