- Turbo Pascal

- Object Pascal

- Delphi

- Modula-2

- Modula-3

- Oberon

- Active Oberon

- Component Pascal

- OCaml

- Haskell

- D

- Ada

- Eiffel

- ...

All languages with native code compiler available, where the header files can bot the manually or automatically generated from the implementation.

Many of them have, or used to have, code browsers and auto complete by reading the metadata stored in the binaries.

C based toolchains are still at stone age, in terms of modular programming support.