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Nim

Free

A statically-typed programming language inspired by Python, Ada and Modula that compiles to C, C++, and Javascript.

FreeFree tier
Type
Open Source

About Nim

Nim is a statically typed compiled systems programming language that combines successful concepts from mature languages like Python, Ada, and Modula. It compiles to native, dependency-free executables (no virtual machine required) and supports all major platforms including Windows, Linux, BSD, and macOS. Nim's memory management is deterministic and customizable with destructors and move semantics, inspired by C++ and Rust, making it well-suited for embedded and hard-realtime systems. The language features zero-overhead iterators, compile-time evaluation of user-defined functions, and value-based datatypes allocated on the stack for high performance. It can compile to C, C++, or JavaScript, serving both backend and frontend needs. Nim is self-contained (compiler and standard library written in Nim) and offers a powerful macro system for direct AST manipulation. Its modern type system includes local type inference, tuples, generics, and sum types, and statements are grouped by indentation. Nim is efficient, expressive, and elegant.

Key Features

Native dependency-free executables without a virtual machine
Deterministic memory management with destructors and move semantics
Supports multiple backends: compiles to C, C++, and JavaScript
Zero-overhead iterators and compile-time evaluation of user-defined functions
Powerful macro system for direct AST manipulation
Modern type system with local type inference, tuples, generics, and sum types
Indentation-based syntax with multi-line statements
Self-contained compiler and standard library written in Nim
Cross-platform support: Windows, Linux, BSD, macOS

Pros & Cons

Pros
  • Efficient: generates small, native, dependency-free executables
  • Expressive: powerful macro system and self-contained toolchain
  • Elegant: modern type system with flexible syntax
  • Deterministic memory management gives control without a garbage collector
  • Multi-backend support enables reuse across platforms and runtimes

Best For

Systems programmingEmbedded systems and hard real-time applicationsBackend developmentFrontend development (via JavaScript compilation)Performance-critical applications where native executables are needed

FAQ

What backends does Nim support?
Nim compiles to C, C++, and JavaScript, allowing it to be used for both backend and frontend development.
What is Nim's memory management model?
Nim uses deterministic memory management with destructors and move semantics, inspired by C++ and Rust. It is customizable and well-suited for embedded and hard-realtime systems.
Is Nim free and open source?
Yes, Nim is open source and free to use. The compiler and standard library are implemented in Nim.