| OS | 2 Stable |
| Path | 2 Stable |
| Performance measurement APIs | 2 Stable |
| Punycode | 0 Deprecated |
| Query string | 2 Stable |
| QUIC | 1.0 Early development |
| Readline | 2 Stable |
| REPL | 2 Stable |
| Iterable Compression | 1 Experimental |
| Iterable Streams | 1 Experimental |
| Modules: CommonJS modules | 2 Stable |
| Modules: ECMAScript modules | 2 Stable |
| Modules: TypeScript | 2 Stable |
| Net | 2 Stable |
| Node-API | 2 Stable |
| Assert | 2 Stable |
| Async hooks | 1 Experimental |
| Asynchronous context tracking | 2 Stable |
| Buffer | 2 Stable |
| Child process | 2 Stable |
| Cluster | 2 Stable |
| Console | 2 Stable |
| Crypto | 2 Stable |
| Debugger | 2 Stable |
| Diagnostic report | 2 Stable |
| Diagnostics Channel | 2 Stable |
| DNS | 2 Stable |
| Domain | 0 Deprecated |
| Events | 2 Stable |
| FFI | 1 Experimental |
| File system | 2 Stable |
| Global objects | 2 Stable |
| HTTP | 2 Stable |
| HTTP/2 | 2 Stable |
| HTTPS | 2 Stable |
| Inspector | 2 Stable |
| Single executable applications | 1.1 Active development |
| SQLite | 1.2 Release candidate. |
| Stream | 2 Stable |
| String decoder | 2 Stable |
| Test runner | 2 Stable |
| Timers | 2 Stable |
| TLS (SSL) | 2 Stable |
| Trace events | 1 Experimental |
| TTY | 2 Stable |
| UDP/datagram sockets | 2 Stable |
| URL | 2 Stable |
| Util | 2 Stable |
| VM (executing JavaScript) | 2 Stable |
| Web Crypto API | 2 Stable |
| Web Streams API | 2 Stable |
| WebAssembly System Interface (WASI) | 1 Experimental |
| Worker threads | 2 Stable |
| Zlib | 2 Stable |