This is the most reliable source for specific JAR files. You can find version 3.5.3 directly at the Maven Central Selenium-Server archive.
Guide to Downloading Selenium Server Standalone 3.5.3 The is a specific, legacy version of the Selenium Server used primarily for executing Selenium WebDriver tests on remote machines or within a Selenium Grid architecture. While modern Selenium projects have moved toward version 4.x, many legacy environments still require this exact build for compatibility. Where to Download Selenium Server Standalone 3.5.3 download selenium-server-standalone-3.5.3.jar
The Selenium project maintains a storage bucket where older binaries are hosted. Navigate to the 3.5/ directory to find the selenium-server-standalone-3.5.3.jar . Key Features of Version 3.5.3 This is the most reliable source for specific JAR files
Older versions of Selenium may contain unpatched security vulnerabilities. Only use 3.5.3 in isolated or internal testing environments. While modern Selenium projects have moved toward version 4
Because Selenium 3.x is no longer the "current" release, you won't find it on the main Selenium downloads page. Instead, you must access the official historical archives:
Selenium 3.5.3 typically requires Java 8. It may encounter issues if run on significantly newer versions like Java 17 or 21 without specific flags. Should You Upgrade?
Better compatibility with older versions of Internet Explorer and Firefox (before the full transition to Geckodriver). How to Run the JAR File
