| Flix | imperative programming, logic programming, functional programming | — |
| Gleam | concurrent computing, functional programming, multi-paradigm programming | — |
| Odin | — | — |
| Reason | functional programming | Meta Platforms |
| Ring | object-oriented programming, procedural programming, functional programming, imperative programming, declarative programming | Mahmoud Samir Fayed |
| Svelte | — | Alan Faubert, Rich Harris, Simon Holthausen, Dominic Gannaway, Tan Li Hau, Ben McCann, Paolo Ricciuti |
| XOD | declarative programming, functional reactive programming, visual programming language, dataflow programming | — |