Free & Open Source

SELECT signal FROM noise

OpenObserve,
as a Native App.

A fast, native desktop client for OpenObserve. Query logs, explore metrics, and manage connections from a purpose-built app — no browser tab, no context switching.

Download for Mac 13.0 MB View on GitHub

Apple Silicon · Intel · Windows · Linux — v0.1.0

Purpose-Built

Everything the Web UI Does — Faster

Native Performance

A Go core via Wails. Opens instantly, sips memory, and stays responsive over millions of events. No Electron bloat.

SQL Query Editor

Full syntax highlighting, field autocomplete, and history. Hit ⌘↵ to run against any stream.

Live Log Explorer

Virtualized rows, level filters, and a JSON inspector drawer for every event. Scroll 400k+ results without a hitch.

Interactive Histogram

See event volume at a glance and drag across the bars to narrow the time range — the query re-runs instantly.

Multiple Connections

Save every OpenObserve instance and org. Switch context from the titlebar — credentials stay on your machine.

Streams & Fields

Browse streams with sizes, filter fields inline, and one-click any field into your query. Metrics, Traces & Dashboards coming soon.

Why a Desktop App?

The same OpenObserve backend, without living in a browser tab.

o3 The o3 App

Launches instantly and restores your last session

Native query tabs that never get lost in browser chrome

Global keyboard shortcuts & multi-window support

Connections stored locally & encrypted by the OS

The Browser UI

Cold page loads and lost sessions on refresh

One more tab buried among fifty others

Shortcuts fight with the browser's own

Credentials re-entered in every new session

Running in Under a Minute

01

Download & Open

Grab the build for your platform below. Open source and lightweight.

02

Connect

Paste your OpenObserve URL and API token. o3 tests reachability and lists your streams.

03

Query

Write SQL, hit run, and explore. Your tabs and history persist across launches.

Download o3

Free, open source, and available for every desktop.

macOS Universal · .dmg 13.0 MB Windows Installer · x64 7.9 MB Linux .AppImage · x86_64 79.3 MB

First launch on macOS

Read this first

o3 isn't signed with a paid Apple Developer certificate, so on first open macOS Gatekeeper will say "o3 can't be opened because Apple cannot check it for malicious software." That's expected — the app is open source and unmodified. Here's how to open it anyway.

A Via System Settings recommended

1 Drag o3.app into your Applications folder, then double-click it. macOS blocks the launch — click Done.

2 Open System Settings → Privacy & Security and scroll to the Security section.

3 You'll see "o3 was blocked to protect your Mac." Click Open Anyway, then confirm with Touch ID or your password.

4 o3 opens. macOS remembers your choice — every launch after this is normal.

B One Terminal command fastest

Prefer the terminal? After moving o3 to Applications, strip the quarantine flag and open it directly:

Terminal · zsh

$ xattr -dr com.apple.quarantine /Applications/o3.app
$ open /Applications/o3.app

This removes only the download-quarantine attribute macOS adds to files from the internet. It doesn't change the app itself.

Every release is built in public from the source on GitHub — you can verify or build it yourself. Once notarization is in place, these steps go away.