Subtrace
Subtrace is a YC Winter 2025 (W25) company. Based in San Francisco, CA, USA. Team of 2.
About Subtrace
Summary
Subtrace builds a zero-code network tracing tool for engineering teams running distributed infrastructure. It captures every inbound and outbound HTTP request in real time by attaching to any process at startup, using BPF under the hood, with no root privileges and no code changes required. It replaces the manual work of instrumenting services or piecing together logs to understand network-level behavior across an entire stack.
Go-to-market
Engineering teams at B2B software companies adopt it by wrapping an existing process with the Subtrace binary, making the initial try self-serve and requiring no integration effort.
From the Y Combinator listing
Zero code network tracer
Subtrace is a zero-code network tracer. It's like having an inspect element button for your whole infra: when you start a process with Subtrace, you'll see every HTTP request coming in and going out in realtime. Under the hood, it uses BPF to make this possible without any root privileges or code changes. We have ~2.5k stars on Github.
Facts
- B2B / B2B -> Engineering, Product and Design
- San Francisco, CA, USA
- 2
- Active
- Early
Founders (2)
- Sachin Sridhar
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