There was a download of SBuilderX 3.13 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The default filenames for the program's installer are SBuilderX.exe, SBuilderX313.exe or _518332D1408AA947F95214.exe etc.
We recommend checking the downloaded files with any free antivirus. You can set up SBuilderX on Windows XP/Vista/7/8/10/11 32-bit. The software is categorized as Games. The most popular versions of the program are 3.1 and 1.0. This free software was originally produced by Luis Sá.
From the developer:
SSBuilderX is a scenery creation tool for FSX. SBuilderX produces the following types of scenery: land and water class Scenery, photo Scenery, vector Scenery, exclusion rectangles, objects placement, ground textured polygons and lines, generic buildings and extrusion bridges.
You may want to check out more software, such as KLAX - LA Intl Airport Photoreal FSX, which might be related to SBuilderX.