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Top 14 TypeScript Tracing Projects
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signoz
SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool
This topic describes how you can enforce observability in a simple application using OpenTelemetry and SigNoz.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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highlight
highlight.io: The open source, full-stack monitoring platform. Error monitoring, session replay, logging, distributed tracing, and more.
Project mention: Highlight: Open-source, full-stack monitoring platform | news.ycombinator.com | 2025-01-03 -
flashlight
📱⚡️ Lighthouse for Mobile - audits your app and gives a performance score to your Android apps (native, React Native, Flutter..). Measure performance on CLI, E2E tests, CI... (by bamlab)
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langtrace
Langtrace 🔍 is an open-source, Open Telemetry based end-to-end observability tool for LLM applications, providing real-time tracing, evaluations and metrics for popular LLMs, LLM frameworks, vectorDBs and more.. Integrate using Typescript, Python. 🚀💻📊
Project mention: RAG Logger: An Open-Source Alternative to LangSmith | news.ycombinator.com | 2024-12-22Congrats on the launch. Cool to see a RAG specific tracing tool. Excited to try it out. Full disclosure, I am the cofounder and core-maintainer of Langtrace(https://github.com/Scale3-Labs/langtrace) which is also an open source tool for tracing and observing your LLM stack and our SDKs are OTEL based. Based on my experience, I think the biggest challenge right now specifically for RAG pipelines is the lack of flexibility in the current crop of tracing tools to not just visualize the entire retrieval flow across all the components of the stack - the framework calls, vectorDB retrievals, re-ranker i/o if any and the final LLM inference. But, also being able to do experiments by freezing a setup, iterate on it and measuring the performance and improving it to clearly know how the changes map to the performance end to end. This is what we think about mostly while we are building Langtrace as well.
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interruptor
Human-friendly cross-platform system call tracing and hooking library based on Frida's Stalker
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react-hook-tracer
See the order of hook-function calls in an interactive log, and inspect a function-component's props, state & refs inside its rendering.
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Project mention: AgentTrace – Open-Source Tracing and Evaluation for AI Agents by TensorStax | news.ycombinator.com | 2025-04-02
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data-guardian
Tiny, zero-dependencies, package which tries to mask sensitive data in arbitrary collections (map, set), errors, objects and strings.
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sentry-traced
A package that provides a decorator to annotate class methods with Sentry tracing information.
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To achieve this, I created a reusable library called tapable-tracer. It captures hook activity effortlessly and can export the data as UML diagram code, making complex hook interactions easier to visualize and understand.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
TypeScript Tracing discussion
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A note from our sponsor - Sevalla
sevalla.com | 1 Sep 2025
Index
What are some of the best open-source Tracing projects in TypeScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | signoz | 23,326 |
| 2 | highlight | 8,631 |
| 3 | flashlight | 1,417 |
| 4 | langtrace | 1,016 |
| 5 | otelbin | 435 |
| 6 | Nestjs-OpenTelemetry | 381 |
| 7 | interruptor | 352 |
| 8 | observe-sdk | 178 |
| 9 | react-hook-tracer | 99 |
| 10 | opentelemetry-angular-interceptor | 42 |
| 11 | agenttrace | 32 |
| 12 | data-guardian | 18 |
| 13 | sentry-traced | 6 |
| 14 | tapable-tracer | 2 |
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