The Best Free Synergy AlternativesTop Mouse & Keyboard Sharing Utilities like Synergy

The best free alternative to Synergy is Barrier, which is also Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Synergy and 16 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Synergy are Mouse without Borders, Input Director, Input Leap and ShareMouse.

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Synergy alternatives are mainly Mouse Sharing Utilities, but if you're looking for Keyboard Sharing Utilities or Mouse Gestures Tools you can filter on that. Other popular filters include Windows, Open Source, Linux, Mac, Android and Free. These are just examples - use the filter bar below to find more specific alternatives to Synergy.
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Alternatives list

  1. Barrier icon

    Barrier

     128 likes

    Barrier is a cross-platform software utility for sharing your mouse and keyboard between multiple computers on your desk. It was forked from Synergy version 1.9's codebase.

    19 Barrier alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • FreeBSD
    • OpenBSD
    Barrier screenshot 1
     
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    17
    138
    Comments about Barrier as an Alternative to Synergy
    Top Positive Comment
    Iaian7
    7

    This is the only cross-platform solution I've found so far, and it's working a heck of a lot better than Synergy!

    Top Negative Comment
    kylefmohr
    4

    No longer maintained as of Feb 2022, development efforts have continued under the "InputLeap" project on GitHub

    mazee
    Positive
    6

    Last update from November 2021. Main developers moved to Input Leap. For now both Input Leap and Barrier are more or less at the same state, but going forward Input Leap might be the better choice.

    3 of 17 comments
    Barrier icon
    Barrier icon

    • Almost everyone thinks Barrier is a great Synergy alternative.

    • Barrier is Free and Open SourceSynergy is Paid and Proprietary
  2. Mouse without Borders icon

    Mouse without Borders

     132 likes

    Control multiple PCs effortlessly with a single mouse and keyboard, drag-and-drop files between machines, and customize your screens with Bing images, all without extra gear.

    18 Mouse without Borders alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Windows
    Mouse without Borders screenshot 1
     
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    15
    100
    Comments about Mouse without Borders as an Alternative to Synergy
    Top Positive Comment
    Guest
    5

    Fantastically easy to use, although only on windows computers so it's not always an alternative to Synergy (which I'm using right now, because Linux...)

    Review by a new / low-activity user.
    Top Negative Comment
    Guest
    6

    Platform support is lacking significantly.

    Review by a new / low-activity user.
    Slinet6056
    Negative
    0

    Mouse sensitivity is inconsistent across screens with varying resolutions. Adjusting settings for uniform sensitivity leads to discrepancies in mouse acceleration.

    Review by a new / low-activity user.
    3 of 15 comments
    Mouse without Borders icon
    Mouse without Borders icon

    • Most users think Mouse without Borders is a great Synergy alternative.

    • Mouse without Borders is Free and ProprietarySynergy is Paid and Proprietary
  4. Input Director icon

    Input Director

     81 likes

    Input Director is a Windows application that lets you control multiple Windows systems using the keyboard/mouse attached to one computer. It is designed for folks who have two (or more) computers set up at home and find themselves regularly sliding from one system to the other.

    15 Input Director alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Windows
    Input Director screenshot 1
     
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    7
    32
    Comments about Input Director as an Alternative to Synergy
    Top Positive Comment
    Wireball
    0

    It's an extremely reliable keyboard/mouse sharing program for Windows computers, with built-in encryption, a rather intuitive screen configurator for relative positions, and UDP or TCP communications. I've used it for over half a decade with great results. It's a pity that it doesn't work with other operating systems, but there's only so much that one programmer can do.

    Slinet6056
    Positive
    1

    It works great between monitors with different orientations and resolutions, which is not well handled by several other software, and the new version has a nice interface.

    Review by a new / low-activity user.
    misterrobato
    Positive
    0

    Very easy painless setup. It's free.

    3 of 7 comments
    Input Director icon
    Input Director icon

    • Most users think Input Director is a great Synergy alternative.

    • Input Director is Free Personal and ProprietarySynergy is Paid and Proprietary
  5. Ad
    Screenshot
    ShareMouse icon
    ShareMouse

    Seamlessly control multiple computers using one mouse and keyboard, switch between systems by moving the pointer, transmit input securely over LAN, share clipboard, support drag-and-drop files, and work across Windows or macOS wi...

    https://www.sharemouse.com
    Learn More
  6. Input Leap icon

    Input Leap

     31 likes

    Input Leap is software that mimics the functionality of a KVM switch, which historically would allow you to use a single keyboard and mouse to control multiple computers by physically turning a dial on the box to switch the machine you're controlling at any given moment.

    19 Input Leap alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Flathub
    • Flatpak
    Input Leap screenshot 1
     
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    2
    7
    Comments about Input Leap as an Alternative to Synergy
    CountBuggula
    Positive
    1

    It's the currently maintained fork of the original open-source version of Synergy.

    kylefmohr
    Positive
    1

    A fork of Synergy from back when it was open source, that is actively being developed, and works cross-platform.

    Input Leap icon
    Input Leap icon

    • Almost everyone thinks Input Leap is a great Synergy alternative.

    • Input Leap is Free and Open SourceSynergy is Paid and Proprietary
  7. ShareMouse icon

    ShareMouse

     94 likes

    Seamlessly control multiple computers using one mouse and keyboard, switch between systems by moving the pointer, transmit input securely over LAN, share clipboard, support drag-and-drop files, and work across Windows or macOS with no hardware required.

    15 ShareMouse alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    ShareMouse screenshot 1
     
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    6
    38
    Comments about ShareMouse as an Alternative to Synergy
    Top Positive Comment
    Guest
    0

    My firewall was messing with Synergy, but ShareMouse just magically worked - amazing!

    Review by a new / low-activity user.
    Top Negative Comment
    Guest
    4

    As its suppose to be free but its really NOT, only for 2 screens not even 2 computers, so if u have a laptop with second scra and another PC with one ur done and not nicely, works for cca 5 min a than kick out or pay, its not even possible to to use only one of those screens.

    Review by a new / low-activity user.
    meyerisch
    Positive
    0

    More features, easier setup, more reliable functionality.

    3 of 6 comments
    ShareMouse icon
    ShareMouse icon

    • Most users think ShareMouse is a great Synergy alternative.

    • ShareMouse is Freemium and ProprietarySynergy is Paid and Proprietary
  10. Deskflow icon

    Deskflow

     10 likes

    Deskflow is a free and open-source keyboard and mouse sharing app. Use the keyboard, mouse, or trackpad of one computer to control nearby computers, and work seamlessly between them. It's like a software KVM (but without the video). TLS encryption is enabled by default.

    11 Deskflow alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Flathub
    • Flatpak
    Deskflow screenshot 1
     
  11. Cursr icon

    Cursr

     7 likes

    Cross-platform utility tool for seamless mouse, keyboard and clipboard sharing and usage in multi-display, single and multi-device setups.

    16 Cursr alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Cursr running locally to map the edges of disparate monitors. This enables the pointer to move between screens anywhere along the edge - not just where the OS sees the screen edges meeting up.
     
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    1
    Comments about Cursr as an Alternative to Synergy
    Matt
    Positive
    0

    Has all the features I need from Synergy -and- enables me to map the sides of non-matching displays for smooth screen-to-screen pointer movement

    Cursr icon
    Cursr icon
    • Cursr is Freemium and ProprietarySynergy is Paid and Proprietary
    • Cursr is CustomizableSynergy is not according to our users
  12. x2vnc (win2vnc) icon

    x2vnc (win2vnc)

     11 likes

    This program will let you use two screens on two different computers as if they were connected to the same computer.

    14 x2vnc (win2vnc) alternatives

    Cost / License

    • Free
    • Open Source

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Linux
    x2vnc (win2vnc) screenshot 1
     
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    2
    7
    Comments about x2vnc (win2vnc) as an Alternative to Synergy
    Guest
    Negative
    0

    This does not actually replicate the functionality of Synergy

    Review by a new / low-activity user.
    Guest
    Positive
    -5

    While the description is a little vague, they seem to imply that your keyboard/mouse input is sent to another PC when you move your mouse into a tiny window on either PC.

    Review by a new / low-activity user.
    x2vnc (win2vnc) icon
    x2vnc (win2vnc) icon

    • Some users think x2vnc (win2vnc) is a great Synergy alternative, some don't.

    • x2vnc (win2vnc) is Free and Open SourceSynergy is Paid and Proprietary
  13. Apple Universal Control icon

    Apple Universal Control

     3 likes

    The Apple Universal Control allow you to control multiple Apple devices, such as an iMac, MacBook, and iPad, all with the same keyboard and mouse.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
     
  14. Logitech Options icon

    Logitech Options

     11 likes

    Customisation of Logitech mouse or keyboard settings, device information, additional functionality such as sharing input devices over multiple computers.

    12 Logitech Options alternatives

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Mac
    • Windows
    Logitech Options screenshot 1
     
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    4
    Comments about Logitech Options as an Alternative to Synergy
    Guest
    Negative
    6

    Logitech options is a hardware keyboard and mouse switching, requires specialized hardware, paired with both devices. It does nothing over the network, like synergy. All options does is detect when you get to the border, and changes the pairing of your mouse and keyboard to a second machine. If you don't have the mouse and keyboard, it doesn't work.

    Review by a new / low-activity user.
    Guest
    Negative
    0

    Logi Options is not a software-based KVM switch.

    Review by a new / low-activity user.
    Guest
    Negative
    1

    Not even close to providing the same functions as Synergy.

    Review by a new / low-activity user.
    3 of 4 comments
    Logitech Options icon
    Logitech Options icon

    • This alternative is disputed. Logitech Options is a legitimate Synergy alternative, but it might have issues that some users think are important.

    • Logitech Options is Free and ProprietarySynergy is Paid and Proprietary
  15. Win2VNC icon

    Win2VNC

     6 likes

    This program will let you use two screens on two different computers as if they were connected to the same computer. It even works between different operating systems.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    Connectoin Details
     
12 of 16 Synergy alternatives