Julia v0.7/v1.0 comes with an interpreter which doesn't have any JIT startup time (because it's an actual interpreter). It's slow because it cannot use precompiled code yet, which is why it's not documented, but it's on the "more to come" list.
a compilation-free version of Julia. At the same people there is discussion about how to cache native compilation results after precompilation, so that way packages can store all of their compiled code and users can directly use it without compilation through the interpreter. This second part isn't done yet, but it'll be interesting to see what happens when it has a truly dynamic + precompiled form.
