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This page describes  additional software and infrastructure you'll need to run WebSpellChecker Server. We recommend familiarizing with it before installing WebSpellChecker Server.


The information on this page applies to WebSpellChecker Server 5.17.0 and higher.

  • Use WebSpellChecker Server only with a supported platform. Any platforms and versions not listed on this page are unsupported, which means we don't test, fix bugs or provide assistance on any issues that may occur. 
  • We recommend visiting our blog to see if there are any End of Support Announcements for upcoming changes to supported platforms.

Software prerequisites

WebSpellChecker Server package requires the following software:

  1. One of the supported operating systems installed on a dedicated server or virtual machine;
  2. Web server to serve static files (web content);
  3. JRE or JDK with JVM installed to enable the grammar engine;
  4. One of the supported browsers for correct display of product functionality integrated in your web application.

Supported platforms and environments

Supported platform(s)Supported version(s)Notes
Operating systemsWindows Server
  • Windows Server 2012
  • Windows Server 2012 R2
  • Windows Server 2016
  • Windows Server 2019
  • Windows Server 2022

Supported OS with a 64-bit architecture only and the ones supported by their respective providers.

Linux Distributives
  • Ubuntu Server 20.04 LTS
  • CentOS 7.0
  • Red Hat Enterprise Linux (RHEL) 7.0
Web serversInternet Information Services (IIS)8.0+
Apache HTTP Server2.4.x
Java Runtime Environment (JRE) or Java Development Kit (JDK) with Java Virtual Machine (JVM)Windows, Linux111.8+

64-bit version of Java 11 8 or higher is required. Recommended to use LTS versions only.

WebSpellChecker AppServer will try to automatically detect Java Virtual Machine (JVM). If you prefer to set up or change a path to JVM manually, refer to the Enabling Grammar Engine guide.

Default Docker image with WebSpellChecker uses OpenJDK offered by Ubuntu (default-jre package). You can also download and install OpenJDK from their official web page.

Supported browsers

Excerpt Include


For hardware requirements of the self-hosted version of WebSpellChecker Server, please refer to DRAFT Hardware requirements for v5.17.0+.