Systems &
Low-Level
Programming
Get closer to the metal than any other category. Systems languages give you direct control over memory, hardware and performance — the skills that power every OS, game engine and compiler on the planet.
4 Languages
Explore the languages
C
since 1972 · OS & embeddedThe foundational systems language. Powers Linux, Windows kernels, embedded hardware and virtually every operating system ever written.
C++
since 1985 · Games & enginesHigh-performance extension of C with object-oriented and generic programming. The language of game engines, browsers, databases and real-time systems.
Rust
since 2015 · Safe systemsMemory-safe systems language with zero-cost abstractions and no garbage collector. The most loved language 8 years running on Stack Overflow.
Assembly
since 1947 · Hardware controlLow-level language with direct correspondence to machine instructions. Essential knowledge for understanding how CPUs, compilers and operating systems really work.
Heads up — these are advanced languages
Systems languages require comfort with programming fundamentals. If you are new to coding, we recommend starting with Python or JavaScript first. Once you understand variables, loops and functions, come back here.
The foundation
What systems programming powers
Common questions
FAQ — Systems Programming
Should I learn C before C++ or Rust?
Learning C first gives you the strongest foundation — manual memory management, pointers and how the operating system works. Once you understand C, both C++ and Rust will make far more sense. That said, many developers jump straight to Rust today if their goal is modern systems programming.
Is Rust worth learning in 2026?
Yes. Rust has been the most loved language on Stack Overflow for 8 consecutive years. It's now used in the Linux kernel, Windows, Google's Android codebase, Meta and Mozilla. It offers C-level performance with memory safety guarantees that C and C++ can't provide.
Do I need to learn Assembly to be a good programmer?
You don't need to write Assembly daily, but understanding it makes you a significantly better developer. It explains why certain code patterns are faster, how function calls work at the CPU level, and how compilers optimise your code. One week of Assembly study is worth months of guessing.
What can systems programming languages do that others cannot?
Systems languages give you direct control over memory layout, CPU registers, and hardware interfaces. They produce native binaries with no runtime overhead, can run without an operating system (embedded), and are used anywhere performance, real-time response or hardware proximity is critical.
What jobs use C, C++ or Rust?
Embedded systems engineer, firmware developer, game engine developer, operating systems engineer, compiler engineer, high-frequency trading developer, systems software engineer, and security researcher. These roles are among the highest-paid in software engineering.
Go low-level today
Start with C to understand the fundamentals, or jump into Rust for modern systems programming.
Beyond the basics
Making sense of Systems
How these languages relate
C, C++, Rust and Assembly form a rough hierarchy of abstraction rather than four unrelated options. Assembly gives you literally the CPU's own instructions; C adds just enough abstraction to be portable across CPUs while staying close to the hardware; C++ adds object-oriented structure on top of C; and Rust is the newest entrant, aiming to match C and C++'s performance while eliminating the memory bugs both are historically prone to.
How to choose
If your goal is understanding how computers work at the deepest level, start with C — it's simpler than C++ and more practical day-to-day than Assembly. If you're building something performance-critical today, like a new systems tool or a game engine component, Rust is increasingly the recommended starting point specifically because its compiler catches memory bugs that would otherwise only surface in production.
What's changing right now
Large, security-conscious codebases have begun adding Rust alongside existing C and C++ code rather than fully rewriting — both the Linux kernel and Android now accept Rust contributions for new components, specifically to reduce the memory-safety vulnerabilities that have historically been the largest source of serious security bugs in C-based operating systems.