## Installation
Official Fastify OpenTelemetry Instrumentation
Core functions and utilities for Langfuse packages
OpenTelemetry integration for the LaunchDarkly Server-Side SDK for Node.js
NestJS OpenTelemetry Library
SDK for integrating Braintrust with OpenTelemetry
Node.js Streams, a user-land copy of the stream library from Node.js
A standalone speech rule engine for XML structures, based on the original engine from ChromeVox.
Langfuse OpenTelemetry export helpers
Vercel wrapper around OpenTelemetry APIs
[](https://github.com/netlify/primitives/actions) [](https://www.npmjs.com/package/@netlify/otel)
Elastic Distribution of OpenTelemetry Node.js (EDOT Node.js)
Phoenix OpenTelemetry tracing SDK for Node.js — register tracing, manual span helpers, and context attributes for LLM observability
Smyth Runtime Environment
Core libraries that every NodeJS toolchain project should use
An OpenTelemetry compatible library for instrumenting and exporting traces from Cloudflare Workers.
Microsoft Application Insights module for Node.js
The string_decoder module from Node core
The core of the humanfs library.
OpenTelemetry observability bridge for Mastra
OpenTelemetry instrumentation for Drizzle ORM
Bootstrap opentelemetry on web.
Langfuse API client for universal JavaScript environments
Splunk distribution of Open Telemetry for browser environment.