Here you can download an unregistered, slightly limited, freely distributable version of synapsen. For registration and removal of the limitation please consider these license information.
Update from older versions already installed: If you want to upgrade from an older version of synapsen to the current version, please follow these instructions.
Important: synapsen can be used with all popular operating systems. Only the so-called Java Virtual Machine (JVM), at least at version 26 (Java 26) must be installed on your system in order to install the card-catalog. You can load the JVM directly from Oracle or from adoptopenjdk.
Also important: Currently, synapsen requires Java 26 and newer. Java 21 and older versions are not supported anymore.
- Download the installation package of synapsen (file size ca. 370 MB)
macOS: the disk image installSynapsen5.dmg is signed and notarized by Apple, so it opens without a security warning.
Windows and Linux: the file installSynapsen5.jar.
Download Synapsen for Windows and Linux
- On macOS, open the downloaded disk image with a double click and launch
installSynapsen5.appfrom inside it. On Windows and Linux, execute the downloaded file directly. Then follow the instructions given by the installer.
Attention: Users who already run an older version of synapsen and want to update their version should not use this installer. In order to update from an older version, please use the update installer instead —
updateSynapsen5.dmgon macOS,updateSynapsen5.jarotherwise.
- After successful installation start the program either via the icon on your desktop or by double clicking the “Synapsen” icon in the working directory of synapsen.
You will find further information in the Synapsen-FAQ.