Chapel is a programming language designed for productive parallel computing at scale.

Rust is described as 'Multi-paradigm, general-purpose programming language that emphasizes performance, type safety, and concurrency. It enforces memory safety—meaning that all references point to valid memory—without a garbage collector' and is a very popular programming language in the development category. There are more than 50 alternatives to Rust for a variety of platforms, including Linux, Mac, Windows, BSD and Self-Hosted apps. The best Rust alternative is Python, which is both free and Open Source. Other great apps like Rust are C++, C (programming language), Go (Programming Language) and C#.
Chapel is a programming language designed for productive parallel computing at scale.

Nelua is a systems programming language for performance sensitive applications, like real-time applications and game engines. Its syntax and semantics are similar to Lua, but its garbage collection is optional, it provides optional type notations, and it is free from an...

Clojure is a dynamic programming language that targets the Java Virtual Machine (and the CLR ). It is designed to be a general-purpose language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for...

The Odin programming language is fast, concise, readable, pragmatic and open sourced. It is designed with the intent of replacing C with the following goals:
Temper is a programming language and toolchain for making libraries that can be used natively from any other language.
Unison is a statically-typed functional language with type inference, an effect system, and advanced tooling. It is based around a big idea of content-addressed code, in which function are identified by a hash of their implementation rather than by name, and code is stored as...


The Objective-C language is a simple computer language designed to enable sophisticated object-oriented programming. Objective-C is defined as a small but powerful set of extensions to the standard ANSI C language.

I want a language for writing applications that is more expressive than Go but less complex than Rust.

HolyC is very similar to regular C, so it's a very simple but powerful language. It was used to make all of TempleOS, so it definitely works to make programs.

P is a programming language for asynchronous event-driven programming and the IoT that was developed by Microsoft and University of California, Berkeley.
Object Pascal is a multi-paradigm, object-oriented, component-based general purpose programming language.