Hacker News — AI on Front Page · August 19, 2026 · 4 min read

OpenLogi

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HID++ over Bolt, Unifying, Bluetooth & wired · macOS · Linux · Windows

Your Logitech mouse, finally local.

A native, local-first alternative to Logitech Options+, written in Rust 🦀. Remap buttons, drive DPI and SmartShift over HID++ — with no account and no telemetry.

Download

$brew install --cask openlogi

Signed & notarized .dmg · Linux .deb/.rpm/.pkg.tar.zst · Windows .msiMIT / Apache-2.0Not affiliated with Logitech

The OpenLogi app remapping an MX Master 4's buttons over HID++

built-in actions

accounts · telemetry · cloud

local TOML config

The configurator

Click a button. Bind an action. Done.

This is the heart of the app — an interactive mouse diagram with clickable hotspots and a per-button action picker. Try it right here: pick a hotspot, then choose any of the built-in actions.

~/.config/openlogi/config.tomllive

schema_version = 2
selected_device = "2b042"
 
[devices.2b042.bindings]
MiddleClick   = "MissionControl"
DpiToggle     = "CycleDpiPresets"
Thumbwheel    = "VolumeUp"
Forward       = "BrowserForward"
Back          = "BrowserBack"
GestureButton = "AppExpose"

MX Master 4Writes straight to config.toml — auto-switches per app.

Features

Everything Options+ does — without the account.

OpenLogi drives your mouse over HID++ directly: buttons, DPI, SmartShift and per-app profiles, from a native app that never phones home.

Remap any button

Bind any of 44 built-in actions to each physical button, per device — plus custom shortcuts, app launchers and scripted actions.

44 ACTIONS

DPI control & presets

Set pointer resolution and cycle your own presets, written straight to the sensor over HID++.

HID++ 0x2201

SmartShift

Flip the wheel between ratchet and free-spin, or let it switch automatically by scroll speed.

HID++ 0x2111

Per-app profiles

Layer per-application overlays that auto-switch the moment your focused app changes.

AUTO-SWITCH

Bolt, Unifying, Lightspeed, Bluetooth or wired

Reach devices over a Logi Bolt, Unifying or Lightspeed receiver, a direct Bluetooth pairing, or a USB cable — no receiver required.

BOLT · UNIFYING · LIGHTSPEED · BLE · USB

Live device view

A carousel of paired devices with battery percentage and charge state for everything online.

BATTERY · CHARGE

Local-first

Your mouse. Your machine. Nothing in between.

No account, no telemetry, no cloud. Bindings live in a plain TOML file you own, and every change is written straight to the device over HID++.

No account, everNothing to sign up for — launch it and it works.
Zero telemetryNo analytics, no usage tracking, no crash phone-home.
Plain-text configEvery binding, preset and profile lives in one readable TOML file.
Open sourceDual-licensed MIT / Apache-2.0 — read or fork every line.

Install

Up and running in a minute.

Signed builds for macOS, Linux and Windows — pick your platform below. Step-by-step setup lives in the docs.

macOS

$brew install --cask openlogi

Download .dmg

Homebrew is recommended — or grab the signed .dmg for Apple silicon or Intel.

Linux

Download .deb

Packages for amd64 and arm64, with .rpm and Arch .pkg.tar.zst builds also available.

Windows

New

Download .msi

Signed x86_64 and arm64 installers, validated on Windows 11 — the newest port.

Quit Logi Options+ before launching — the two fight over HID++ access, and only one app can own a receiver at a time. On Linux, the same applies to Solaar.

Replace Docker Desktop with a 200ms cold-start microVM — containers, sandboxes and VMs in one native macOS app.

Better Infrastructure for AI

arcbox.dev→

FAQ

Questions, answered.

Is OpenLogi made by Logitech?

No. It's an independent, open-source project, not affiliated with or endorsed by Logitech. "Logitech", "MX Master" and "Options+" are their trademarks.

Do I have to quit Logi Options+?

Yes. OpenLogi and Options+ both speak HID++ to the same device, and only one can own a receiver at a time — quit Options+ (including its menu-bar agent) first.

Which mice are supported?

MX Master 4, 3S and 3, MX Anywhere 3, Signature M650 and Ergo M575 — over a Logi Bolt, Unifying or Lightspeed receiver, direct Bluetooth, or USB. Keyboards get F-row remapping, Fn-lock and RGB or backlight control; Litra lights and Logitech webcams are supported too.

Does it run on Linux or Windows?

All three are supported. Linux ships .deb, .rpm and Arch packages with udev rules and a systemd user unit. Windows is the newest port — validated end-to-end on Windows 11 hardware, with signed .msi installers in every release.

Does it need an account or send telemetry?

Neither. The only network calls are device-image downloads and an opt-in update check that's off by default — everything else stays on your machine.

Where are my settings stored?

In a single plain-text TOML file. The GUI writes your bindings, presets and profiles to it directly, the Settings window covers app-wide preferences, and the file stays hand-editable.

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