Downloading LinkUp 2.1 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. Linkup.zip is the default file name to indicate the LinkUp installer.
We recommend checking the downloaded files with any free antivirus. This program's bundle is identified as com.alxsoft.linkup. This free software for Mac OS X was originally developed by ALXsoftware. LinkUp for Mac lies within Internet & Network Tools, more precisely Network tools. The following version: 2.1 is the most frequently downloaded one by the program users.
From the developer:
This small application can be used to show the link status of the selected Network interface (en0, fw0, etc...)
or remote server connection by pinging IP address or host name.
Its main system requirements are:
Mac OS X 10.4 and later, PPC or Intel.
You may want to check out more software for Mac, such as AquaEthereal, which might be related to LinkUp.