wasmer-vs-wasmtime

Wasmtime did the basics. Wasmer added your language and skyrocketed speed.

Developers and enterprises prefer Wasmer for its incredible performance and flexibility.

Startup speed

Wasmer1000x

Wasmtime

Stunning speed

Wasmer is designed from the ground up to match the speed of native executables thanks to our LLVM integration. Experience startup performance unlike any other.

Execution speed

Wasmer2x

Wasmtime

“Wasmer is really flexible and easy to integrate, with incredible documentation”

Quentin Adam, Clever Cloud CEO

Lightweight headless mode

Wasmer ships with a headless mode that allows running precompiled Wasm files in the most lightweight way.

0.8mb

Wasmer

13.8mb

Wasmtime

Bundle size

Flexible compiler support

No matter if you are focusing on development speed or runtime performance – Wasmer supports the right runtime for the right application.

Wasmer

Cranelift

Singlepass

LLVM

Wasmtime

Cranelift

Compilers

Favorite language integration

Wasmer aims to enable all devs to use Wasm. It supports a wide range of languages that enables you to use Wasm, no matter what language you are coding in.

Wasmer

Wasmtime

Supported languages