Downloading eTransmit for Autodesk Revit 13.05.21155 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. LTU.exe or RMCConfigurator.exe are the default file names to indicate the eTransmit for Autodesk Revit installer.
ETransmit for Autodesk Revit is categorized as Photo & Graphics Tools. This free software was originally created by Autodesk. The most popular versions of the software 13.0 and 1.0. The latest version of eTransmit for Autodesk Revit is supported on PCs running Windows XP/7/8/10/Vista/11, both 32 and 64-bit.
From the developer:
eTransmit for Autodesk Revit is a program that allows you to copy and detach a Revit model and the associated files to a single folder for Internet transmission. You can locate dependent files automatically and include them in the transmittal folder, choose to include related dependent files such as linked Revit models, CAD files, DWF markups, decal images and external keynote files.
You may want to check out more software, such as Autodesk Revit Architecture 2011, Autodesk Revit MEP 2012 or Hotfix - Autodesk Revit 2013 - Spot Elevation, which might be similar to eTransmit for Autodesk Revit.