Download of AVSender 3.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Internet & Network Tools, more precisely Network tools. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X was originally produced by MacFanr.
From the developer:
AVSender allows you to send and play music and movies wirelessly. If you are having a UPnP/DLNA enabled system, such as Xbox, Chromecast, smart TV, XBMC, or Kodi, AVSender can stream your video wireless to it. You just need to drag or open any movie by AVSender and the video will appear instantly on the big screen.
You may want to check out more software for Mac, such as FoxTrot, CVS Set-Up or AbleFtp7, which might be related to AVSender.