PatchDownloader 6.2.0.5 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. PatchDownloader lies within Internet & Network Tools, more precisely Network Tools.
The actual developer of the free software is PHD Virtual Technologies. 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.
From the developer:
It's easy to miss a patch, and painfully slow to find and select the ones you want. These downloaded patches go on an HTTP or FTP repository, or are copied direct to each host over SSH, and the esxupdate utility is used to patch the ESX host.
With Patch Downloader, you just open the app, select the version of ESX from the drop down, and select a file repository (folder, drive map, SMB share, etc.) where you want to download the patches.
You may want to check out more software, such as Friendly Network Inventory, which might be related to PatchDownloader.