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What is Zelos?

The Problem

Building mission-critical systems like rockets, robots, vehicles, or medical devices means dealing with complexity that traditional tools can't handle.

Your system has dozens of components, each with its own timing, state, and behavior. When something goes wrong, you need to know exactly what happened, when, and why. But you're stuck with:

  • Fragmented tools that don't talk to each other
  • Manual correlation across different data sources
  • Missing context when failures occur in the field
  • Slow iteration from limited hardware access

The result? You spend more time fighting tools than building. You correlate timestamps across many different tools. You fight sharing access to critical hardware setups just to add a single line of code.

Hardware is hard enough, our tools shouldn't be.

What is Zelos?

Zelos is the data platform for mission‑critical systems. We help teams observe, control, and test their system on a collaborative platform – from prototype to production.

We built Zelos from a fundamental belief: data is the only thing that closes the loop between intention and reality.

Every line of code is a hypothesis. Every deployment is an experiment. Every failure is a lesson, but only if you capture it. As AI accelerates how fast we can write code, the bottleneck shifts from development to understanding. The teams that can instrument and learn continuously will outpace those still figuring this out.

This isn't just about debugging. It's about building systems that teach you how to build better systems.

How It Works

At its core, Zelos is about making data flow effortlessly and closing the loop between intention and reality.

graph LR
  A[Your Code] -->|SDK| B[Zelos Agent]
  B -->|Stream| C[Zelos App]
  B -->|Export| D[.trz Files]
  D -->|Load| C
  1. Instrument your code with minimal SDK calls
  2. Stream data to a local or remote agent
  3. Visualize live data or recorded traces
  4. Collaborate by sharing trace files

Key Benefits

  • See Everything, Instantly

    Stream data from any source at any frequency. No polling, no delays, just real-time visibility with microsecond precision.

  • Record Once, Replay Forever

    Every test run becomes a replayable trace. Debug at your desk what failed in the field.

  • Built for Teams

    Share traces, layouts, and insights. What one engineer discovers, everyone learns.

  • Clean Integration

    Simple SDKs that don't clutter your code. Instrument once, use everywhere.

Who Uses Zelos?

  • Engineers debugging complex hardware-software interactions
  • Test Teams automating validation with precise data assertions
  • DevOps monitoring production systems in real-time
  • Organizations building data-driven development culture