The search results clearly show that many links for a "free download" of the Server Edition come from unsafe or dubious websites. Downloading from these sites is a gamble with your server's security. Dozens of sites make dubious claims about offering free downloads, including some that mention version 10.2.3. Do not trust them. If you encounter a "free" download for the Server Edition that is not an official trial, assume it is a trap.
The free download is typically a "Demo" or "Trial" version. While it allows you to simulate all features (like resizing), you will need a valid license key to "Apply" changes to the partition table on a Server OS.
If you cannot find a trusted or need newer features, consider these:
While these free features are powerful, a version like 10.2.3 or later would require a license for the advanced server-specific features. The software has a well-designed, intuitive interface that makes complex operations accessible, and it supports multiple languages.