Synergy 3

v3.7.0-beta (June 22, 2026)

Features

• Clipboard sharing now works between computers on Wayland sessions, for both text and images, provided the latest Wayland libraries are installed.
• Serial key activation now requires an internet connection, with offline activation still available through a challenge-and-response for offline keys.
• Pausing now stays in effect across computer restarts, with a dimmed tray icon showing at a glance when sharing is paused.
• Introduced a choice between the stable and beta update tracks, so you only receive notifications in the GUI for the kind of release you want.

Enhancements

• This release is built on a major update to the Core (1.21.1-beta) which underpins the clipboard, input handling, and stability improvements throughout.
• Connection status for each computer is now accurate and updates live, and manually adding a computer reports success or failure correctly instead of always failing.
• The About page now shows the application version and build date, your licence details, and the number of seats your licence covers.
• Flatpak builds now include the components needed for clipboard sharing, bringing that feature to Flatpak users on Wayland.

Bug fixes

• Resolved an issue where the application launched to a blank, unusable screen instead of opening normally.
• Repaired clipboard transfer between computers, which had regressed: copied content hit a "corrupted clipboard data" size mismatch on the receiving side and did not transfer.
• Addressed installing, upgrading, or removing the package failing on Ubuntu 26.04 with "prerm/postinst maintainer script subprocess failed with exit status 1".
• Corrected pressing start doing nothing, with no explanation, when a background sharing process was already running.
• Restored the back and forward mouse buttons on all platforms, where they had stopped responding.
• Stopped a held key from registering as separate press and release events, so key repeat now behaves as expected.
• Eliminated a crash that struck when a hotkey could not be delivered to every connected computer.
• Prevented a crash that could occur the first time the background service started on Windows.
• Cleared a macOS error reading "failed to get permission status from os" that left the app unable to recover, by showing the permission steps again.
• Ended the repeated input-permission prompt that appeared on almost every start on Wayland, and kept the chosen language from being reset.
• Repaired the window opening too small on Wayland, which clipped menus and collapsed parts of the layout.
• Halted a retry from showing "ip or hostname is required when connecting a peer" and then doing nothing when a computer's address was unknown.
• Removed a packaging clash that blocked installation on Fedora when another installed application shipped the same identifier file.
• Ensured correct character output on macOS when using the RIME input method, which previously produced the wrong characters.
• Made changing the encryption key length take effect, where the security certificate had kept its previous length until cleared by hand.