Wasmer
Wasmer is an open WebAssembly runtime supporting WASI, WAPM packages, several compiler backends, and SDKs for multiple languages.
Why use it
It packages extensions, server functions, or portable tools as controlled Wasm modules.
Where it fits
Find engines, frameworks, code libraries, version control, and production automation.
What to check
Some cloud and product layers are commercial; benchmark module capabilities, startup cost, and host APIs.