Download Key Remapper
for Windows (2026)

Key Remapper offers a free trial that includes every feature with no restrictions during the evaluation period. You can download and test the full program without entering payment details or creating an account.

Here is how the licensing works:

• Free trial – Full access to all features (key remapping, mouse remapping, profiles, per-app rules) for a limited evaluation period
• Personal license – A one-time purchase from ATNSOFT that removes the trial limitation and covers use on a single computer
• No subscription – You pay once and own the license permanently, including all minor version updates

During the trial, you will see a reminder dialog when the program starts, but all functionality works exactly the same as the paid version. There are no feature-locked tiers or premium-only options. If the trial expires and you decide not to purchase, you can simply uninstall the program – no leftover files or services remain on your system.

Yes, Key Remapper v1.13 is safe to use on Windows 11 (including 22H2, 23H2, and 24H2 updates). The program has been tested across multiple Windows 11 builds and works without compatibility issues.

Here is why it is safe:

• No registry changes – Key Remapper does not modify the Windows registry, system files, or boot configuration. It works entirely in memory while running.
• No drivers installed – The program uses standard Windows input hooks (SetWindowsHookEx API) rather than installing custom kernel drivers, which means it cannot cause blue screens or system instability.
• Clean uninstall – You can remove it through Windows Settings > Apps or Control Panel. No traces are left behind.
• No network access required – Key Remapper does not phone home, collect telemetry, or require an internet connection to function.

Some antivirus programs may flag Key Remapper because it hooks into keyboard input – this is expected behavior for any remapping tool and is a false positive. If flagged, add keyremapper.exe to your antivirus exclusion list.

Key Remapper is lightweight and runs on almost any Windows PC. Here are the full requirements:

• Operating System: Windows 11, 10, 8.1, 8, 7, Vista, or XP (both 32-bit and 64-bit editions). Also works on Windows Server 2003 through 2025.
• Processor: Any x86 or x64 CPU. No minimum clock speed – even decade-old processors handle it without issue.
• RAM: 2 GB minimum (4 GB recommended). Key Remapper itself uses less than 10 MB of memory while running.
• Disk Space: 200 MB free for installation. The actual installed size is much smaller, but Windows needs buffer space for the installer to run.
• Display: 800 x 600 minimum resolution. 1024 x 768 or higher recommended for comfortable use of the interface.
• Permissions: Administrator rights are recommended. Without admin rights, Key Remapper still works but cannot intercept key presses inside elevated (Run as Administrator) programs.

There is no GPU requirement, no .NET framework dependency, and no need for special hardware. If your computer can run Windows, it can run Key Remapper.

Download the latest installer from our download section and run it directly. The new version installs over the existing one automatically.

Step-by-step update process:

• Step 1: Download the latest keyremapper_setup.exe from this page
• Step 2: Close Key Remapper if it is currently running (right-click the system tray icon and select Exit)
• Step 3: Run the new installer and follow the wizard
• Step 4: Launch Key Remapper again

Your saved profiles, remapping rules, and settings are preserved during the update. You do not need to uninstall the old version first – the installer handles the upgrade in place.

Key Remapper does not have a built-in auto-update feature, so you need to check for new versions manually. The current version (1.13 build 480) was released on February 18, 2022. You can check the version history on the ATNSOFT website to see if a newer build is available.

Yes, mouse remapping is one of Key Remapper’s strongest features and a major reason people choose it over simpler tools like SharpKeys or PowerToys.

Here is exactly what you can do with mouse input:

• Mouse buttons: Remap any of the five standard mouse buttons (left, right, middle, X1/back, X2/forward) to keyboard keys, key combinations, or other mouse buttons
• Scroll wheel: Remap scroll-up and scroll-down to any keyboard key or key combination. For example, you can turn the scroll wheel into a volume knob by mapping scroll-up to Volume Up and scroll-down to Volume Down.
• Mouse-to-mouse: Remap one mouse button to another (e.g., swap left and right click, or make X1 act as middle-click)
• Block mouse buttons: Disable specific mouse buttons entirely if they trigger by accident

A popular use case: gamers often remap X1 and X2 (the side buttons on most gaming mice) to keyboard shortcuts like Alt+Tab or Ctrl+C. Another common setup is mapping scroll-up/down to Page Up/Page Down for faster document navigation.

All mouse remapping rules support per-application restrictions, so you can have different mouse behaviors in different programs.

No, Key Remapper is a Windows-only application. It relies on the Windows SetWindowsHookEx API to intercept keyboard and mouse input at the OS level. This API does not exist on macOS or Linux, so Key Remapper cannot be ported or run through compatibility layers like Wine.

Here are the recommended alternatives for other operating systems:

• macOS: Karabiner-Elements is the standard choice. It is free, open-source, and supports complex key remapping with per-application rules. It is widely used by Mac developers and power users.
• Linux: Several options exist depending on your setup. xmodmap handles simple key swaps. xremap is a newer tool with per-application support. keyd works at a lower level and does not depend on X11/Wayland. For scripting-level control, AutoKey provides text expansion and macros.
• Chrome OS: Built-in keyboard settings allow basic remapping of modifier keys. For anything more advanced, you need to enable the Linux subsystem (Crostini) and use a Linux tool.

None of these alternatives are made by ATNSOFT – they are separate projects with their own learning curves.

Key Remapper is better for quick, visual key remapping. AutoHotkey is better for complex automation and scripting. They solve different problems, and the right choice depends on what you need.

Choose Key Remapper if:

• You want a point-and-click interface with no scripting required
• You need to remap mouse buttons and scroll wheel (AutoHotkey supports this but requires more work)
• You want to be up and running in under a minute
• You need per-application rules without writing conditional logic
• You prefer a traditional Windows application with a UI over editing text files

Choose AutoHotkey if:

• You need complex macros (multi-step actions, delays, loops, conditional logic)
• You want text expansion (type an abbreviation and it expands to a full phrase)
• You need to launch programs, open URLs, move windows, or automate any Windows task
• You are comfortable writing simple scripts and want maximum flexibility
• You want a completely free tool with no trial limitations

Many users actually run both: Key Remapper for simple persistent remaps (like CapsLock to Escape), and AutoHotkey for scripted automations that go beyond what a remapper can do.

PowerToys Keyboard Manager is simpler and free. Key Remapper is more capable, especially for mouse input. Both offer visual interfaces for remapping keys without writing code.

Here is a direct comparison:

• Price: PowerToys is completely free (made by Microsoft). Key Remapper requires a license after the trial.
• Keyboard remapping: Both handle single-key and shortcut remapping well. PowerToys also supports remapping shortcuts to text strings and app launches (added in 2024).
• Mouse support: Key Remapper can remap all mouse buttons and scroll wheel actions. PowerToys Keyboard Manager has no mouse remapping at all – this is the single biggest difference.
• Key blocking: Key Remapper lets you disable keys entirely. PowerToys cannot block keys – you can only remap them to something else.
• Per-app rules: Both support application-specific remapping. PowerToys identifies apps by process name. Key Remapper identifies them by executable path or window title.
• Profiles: Key Remapper supports multiple switchable profiles. PowerToys does not have a profile system – all remaps are always active.
• Double-press: Key Remapper can emulate double key presses with custom delays. PowerToys cannot.

Bottom line: If you only need to remap keyboard keys and shortcuts, PowerToys is free and works great. If you need mouse button remapping, key blocking, profiles, or double-press emulation, Key Remapper is the better choice.

SharpKeys and Key Remapper work at completely different levels. SharpKeys writes directly to the Windows registry (the Scancode Map value), while Key Remapper intercepts input through software hooks at runtime.

Here is what that means in practice:

• Permanence: SharpKeys remaps persist even without the program running (they are baked into the registry). Key Remapper remaps are active only while the program runs in the background.
• Restart required: SharpKeys requires you to log out and back in (or reboot) for changes to take effect. Key Remapper applies changes instantly with no restart.
• Scope: SharpKeys only does simple one-to-one key remaps. Key Remapper supports key-to-combination, mouse buttons, scroll wheel, key blocking, per-app rules, profiles, and more.
• Reversal: SharpKeys changes require another registry edit plus restart to undo. Key Remapper changes disappear the moment you close the program or delete a rule.
• Cost: SharpKeys is completely free and open-source. Key Remapper is shareware with a paid license.

Use SharpKeys if you want a permanent, always-on, simple key swap (like remapping CapsLock to Ctrl) that works even in the BIOS/UEFI password screen. Use Key Remapper if you need anything more than basic one-to-one remapping, or if you want the flexibility to change your mappings without restarting.

No, Key Remapper does not modify the Windows registry. This is one of its key design principles and a significant difference from tools like SharpKeys.

Here is how Key Remapper works under the hood:

• It installs a low-level keyboard hook (WH_KEYBOARD_LL) and a low-level mouse hook (WH_MOUSE_LL) through the standard Windows API
• When you press a remapped key, the hook intercepts the input before Windows processes it
• Key Remapper blocks the original keypress and injects the replacement key/combination instead
• This all happens in user-mode memory – nothing is written to disk, the registry, or any system configuration file

The practical advantage: you can experiment freely with remapping rules. If something goes wrong, just close Key Remapper (Ctrl+P pauses it, or right-click the tray icon and Exit) and your keyboard instantly returns to its default behavior. No registry cleanup, no reboot, no risk of locking yourself out of your own computer.

Key Remapper does store your remapping profiles and settings in its own configuration files (in the program’s installation folder), but it never touches the Windows Scancode Map registry key that tools like SharpKeys use.

Open Key Remapper, go to Options, and enable “Start with Windows.” This adds the program to your Windows startup so your remapping rules are active from the moment you log in.

Detailed steps:

• Step 1: Open Key Remapper (from the Start menu, desktop shortcut, or system tray icon)
• Step 2: Click the Options menu in the toolbar (or press Alt+O)
• Step 3: Check the “Start with Windows” or “Run at system startup” option
• Step 4: Close the Options dialog

From now on, Key Remapper will launch automatically every time you log into Windows. It starts minimized to the system tray, so you will not see a window pop up – just the small icon near your clock.

If you want Key Remapper to start completely hidden (no splash screen, no visible window), you can add the /hidden or /autorun command-line switch to the startup shortcut. Right-click the shortcut, go to Properties, and append /hidden to the Target field after the .exe path.

Yes, Key Remapper supports per-application remapping rules. You can make any remap active only inside specific programs, or active everywhere except specific programs.

How to set up per-application rules:

• Step 1: Create or edit a remapping rule
• Step 2: In the rule properties, find the “Apply to” or “Active in” field
• Step 3: Add the target application by browsing to its .exe file or by window title
• Step 4: Save the rule

The rule will now only activate when the specified program has focus. When you switch to a different application, the remap turns off automatically.

Common use cases:

• Remap CapsLock to Escape only in code editors (VS Code, Vim, Sublime Text)
• Remap mouse X1/X2 buttons to specific shortcuts only in Photoshop or Blender
• Block certain keys only in games where they cause accidental actions (like the Windows key)
• Have different scroll wheel behavior in a browser vs. in a spreadsheet application

You can also use folders in Key Remapper to group related per-application rules together, making it easier to manage complex setups. Use Shift+Insert to create a folder, then drag rules into it.

Hook errors and key detection failures are the most common issues with Key Remapper. Here is how to diagnose and fix them:

Problem: “Keyboard Hook Error” or “Mouse Hook Error” on startup

• Update Key Remapper to the latest version (v1.13 build 480) – older versions had hook stability issues that were fixed in v1.12+
• Make sure Windows is fully updated – missing OS patches can cause hook registration failures
• Open Key Remapper Options and disable “Remap internal programmatic key presses” and “Remap internal programmatic mouse button presses” if you do not need them
• Check for conflicts with other software that hooks keyboard input (antivirus, other remappers, macro software)

Problem: Remapping does not work in certain programs

• The target program is likely running as Administrator while Key Remapper is running as a standard user. Fix: run Key Remapper as Administrator (right-click shortcut > Run as administrator)
• Check if Key Remapper is paused – middle-click the system tray icon or press Ctrl+P to toggle pause
• Verify the per-application rule paths are correct if you moved or reinstalled the target program

Problem: Modifier keys (Shift, Ctrl, Alt) get stuck

• This was a known bug fixed in version 1.12. Update to v1.13 if you are on an older version.
• If it still happens, press and release each modifier key individually to unstick them

Key Remapper and Key Manager are both made by ATNSOFT, but they target different levels of complexity. Think of Key Remapper as the focused tool and Key Manager as the full-featured power tool.

Key Remapper handles:

• Remapping keys, mouse buttons, and scroll wheel to other keys or key combinations
• Swapping keys, blocking keys, double-press emulation
• Per-application rules and profile management

Key Manager adds everything above plus:

• Custom actions: Assign keys to launch programs, open files, open URLs, open folders
• Text insertion: Map a key to type out a full text string (like a text expander)
• Media control: Dedicated actions for play/pause, next track, volume, mute
• Window management: Move, resize, minimize, maximize, or close windows with key presses
• Script execution: Run command-line scripts or batch files from a key press
• Key combination remapping: Remap multi-key combos (like Ctrl+Shift+A) to other combos or actions – Key Remapper only remaps single keys

Price difference: Key Manager costs more than Key Remapper. If you only need to remap keys and mouse buttons to other keys, Key Remapper is sufficient and costs less. If you need the action-assignment features listed above, Key Manager is the upgrade path.