How it works
Rust offers the speed and low-level control of C and C++, but its compiler enforces rules about ownership: every value has one owner, and the 'borrow checker' makes sure memory is freed exactly once and never used after it is gone. Data races between threads are ruled out the same way, so mistakes that would be security holes in C become compile errors.
It began at Mozilla and reached 1.0 in 2015. Cargo, its build tool and package manager, handles dependencies, builds, tests and documentation, and packages (crates) come from crates.io. Rust now runs inside the Linux kernel, Windows, Android, Firefox and Cloudflare's network, and tools such as Tauri, ripgrep and uv are written in it.
The price is a steep learning curve and slow compiles: the compiler rejects code until it can prove it safe, which frustrates newcomers, even though its error messages are unusually helpful.
Rust pros and cons
Pros
- Speed on a par with C and C++
- Memory and thread safety checked at compile time
- Cargo makes building, testing and sharing code simple
- Helpful compiler errors and an expressive type system
- Compiles to WebAssembly and to small embedded chips
Cons
- Steep learning curve: ownership, lifetimes and traits
- Slow compile times on large projects
- Fewer developers to hire, and some libraries still maturing
When to use Rust
Pick it when
- Performance-critical code: engines, parsers, databases, game servers
- Security-sensitive software where memory bugs are not acceptable
- Command-line tools, desktop apps with Tauri, and WebAssembly modules
Skip it when
- Quick prototypes or ordinary form-and-database web apps that need to ship fast
- A team with no time to climb the learning curve
Rust pricing
Open source
Free and open source (MIT or Apache 2.0).
Approximate, checked September 2026.What the other tools cost
Rust vs the alternatives
Related terms
More in Programming languages
Systems