IsoKey: The Hardware-Agnostic
Command Engine.
Intelligent hardware signal isolation built in C#. Use any secondary keyboard, numpad, or custom controller as a dedicated macro deck without duplicating primary keypresses.
What Makes IsoKey Unique?
Traditional remappers duplicate keypresses across all connected keyboards. IsoKey operates below standard user-mode hooks, isolating hardware device IDs at the driver layer so your 2nd keyboard acts as an independent, fully-customizable command surface.
Engine Pillars
Four foundational technologies built for uncompromising speed, safety, and workspace control.
IsoKFilter Driver
Selective Input Guard kernel driver. Intercepts and blocks mapped key codes dynamically on secondary devices while leaving primary typing 100% untouched.
Zero Latency
Pure C# multi-threaded execution engine. Sub-millisecond stroke processing ensures instantaneous macro execution for high-speed workflows.
Smart Clutch
Toggle hardware input isolation dynamically with a single hotkey. Shift between standard typing mode and macro control mode in real time.
Workspace Snap
Save multi-folder Explorer window positions, developer tools, and window arrangements. Restore your exact workspace layout with one key.
Engine Modes Comparison
IsoKey supports 3 distinct driver hook architectures to fit any operating environment.
| Remapping Engine | Driver Layer | Gamer Safe | Key Blocking | Hardware Isolation |
|---|---|---|---|---|
| IsoKFilter (Kernel Driver) | Isocent Kernel Driver | 100% Safe | Selective Guard | Hardware Device ID |
| High-Level (Standard Hook) | Windows SendInput API | Standard | User Mode Hook | WMI Instance Match |
| Interception Driver (Legacy) | Interception API | Legacy | Full Filter Driver | Hardware Index |
IsoKey Ecosystem Modules
Explore the deep capabilities of IsoKey through its dedicated sub-section modules.
24+ Built-in Actions
Execute REST API webhooks, launch apps, run PowerShell/Python scripts, control OBS scenes, and route audio playback devices.
Extensible C# SDK
Download community-built plugins or code your own dynamic C# action extensions using the official IsoKey SDK.
Documentation & Manual
Step-by-step driver installation guides, engine architecture breakdowns, troubleshooting, and API reference manual.
Isocent Software Ecosystem
IsoFlow
Coming SoonAutomated file & asset management bridge designed to sync project assets seamlessly across tools.
IsoRender
In ResearchBackground process priority & GPU resource management utility for 3D engine render queues.
IsoScript
Coming SoonLightweight, highly extensible C# automation scripting engine for power-user desktop macros.
Join the IsoKey Founder Community
Help fund the Microsoft Code Signing Certificate and official driver signing release. Gain early access to builds, pro features, and direct creator updates.