brew install axel

axel -h
Axel 2.17.9 (darwin19.4.0)
Usage: axel [options] url1 [url2] [url...]

--max-speed=x		-s x	Specify maximum speed (bytes per second)
--num-connections=x	-n x	Specify maximum number of connections
--max-redirect=x		Specify maximum number of redirections
--output=f		-o f	Specify local output file
--search[=n]		-S[n]	Search for mirrors and download from n servers
--ipv4			-4	Use the IPv4 protocol
--ipv6			-6	Use the IPv6 protocol
--header=x		-H x	Add HTTP header string
--user-agent=x		-U x	Set user agent
--no-proxy		-N	Just don't use any proxy server
--insecure		-k	Don't verify the SSL certificate
--no-clobber		-c	Skip download if file already exists
--quiet			-q	Leave stdout alone
--verbose		-v	More status information
--alternate		-a	Alternate progress indicator
--help			-h	This information
--timeout=x		-T x	Set I/O and connection timeout
--version		-V	Version information

Visit https://github.com/axel-download-accelerator/axel/issues to report bugs