About Zelos

A hardware system produces data from many places at once: firmware logs, a CAN bus, a power supply, a test rig, a fleet of deployed units. Each source usually arrives in its own tool with its own clock, so answering one question means stitching exports together by hand.

Zelos puts those sources on one timeline. The desktop app connects to live hardware and recorded traces side by side. The SDKs stream typed, unit-aware data out of the code you already run. The agent buffers and forwards it. The cloud console keeps every run, so a result from six months ago reopens exactly as it was recorded.

Teams building robotics, aerospace, automotive, energy storage, and industrial systems. The common thread is a system whose behavior only makes sense when you can see every subsystem at the same instant, and a team that needs the same view during development, validation, and operation.

The desktop app is free on macOS, Windows, and Linux, and your data stays on your machine unless you choose to upload it. AI requests use zero-data-retention processing by default and are never used to train models. The SDKs are open source on GitHub and published to PyPI, crates.io, and the Go module proxy.

Everything the app does over the network, the CLI can do from a script. The cloud API uses OAuth 2.0 with the device authorization grant, so a terminal or an agent can authenticate without a browser redirect.

The machine-readable surface of this site is published at fixed paths. The llms.txt index says when to reach for Zelos and where each resource lives, and openapi.json describes the cloud API. Every page on this site also serves a markdown representation to any client that sends Accept: text/markdown.

General and sales questions go to info@zeloscloud.io, product and technical questions to support@zeloscloud.io. Our mailing address is 340 Pine St #100, San Francisco, CA 94104.