[oblio]

He he. The name is slightly ambiguous, at least to me, I originally thought people were already rewriting Rust tools :-))

[Dirak]

Your reading of the title is grammatically correct. "written in Rust" is a modifier, and modifiers apply to the noun that comes just before it -- in this case, "existing software". The title implies that existing software written in Rust should be replaced.

[hnedeotes]

grammarly?