CPUs, GPUs, operating systems, programming languages toolchains. Even if you consider open source, the majority of contributions are from US companies. There

CPUs, GPUs, operating systems, programming languages toolchains. Even if you consider open source, the majority of contributions are from US companies. There are some companies contributing to GCC and clang from UK, GraalVM and V8 are partially in European sites but from American companies nonetheless. There is OCaml in France, more no idea.