The 2.0 version of Bit-Twist for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is Ayeowch. Bit-Twist for Mac relates to Internet & Network Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
Bit-Twist is a simple, yet powerful libpcap-based Ethernet II (IEEE 802.3) packet generator that comes complete with a comprehensive pcap capture file editor. The tool can send multiple trace files at a time. In addition, it can send packets at a specific speed or line rate in Mbps.
You may want to check out more software for Mac, such as IPNetShareX, PPPoE Connector or tn3270, which might be similar to Bit-Twist.
Puzzle
Puzzle