Many! These tools are (also) available on Termux.

aria2
axel
wget

Install on Termux:

pkg update  
pkg upgrade  
  
pkg install wget axel aria2  
  
# curl is also useful, to use with https://transfer.sh  
pkg install curl

1. aria2

aria2 is one of the most powerful downloaders now. It also has web UI, Android app Google Play store APK files are also available on https://f‐droid.org

The command-line version aria2c is sometimes too powerful to be simple. To simplify, we can use the command with Web UI or Android app mentioned above.

Manual is here

We can also use a configuration file to set preferred arguments for aria2c to use by default. Thus, we can simply pass the download URL alone, no need to type the option arguments every time.

2. axel

It is less feature-rich than aria2. To set the maximum number of connections:

-n x Specify the maximum number of connections  

To view full help: axel -h

Axel 2.17.10 (linux-android)  
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
  1. wget

It is a long time friend. You know it well already. However, it does not support multi connections.

wget ‐c -O new_name.zip https://example.com/file.zip

Conclusion

On Termux, I make a config file and an alias (command in ~/.zshrc) to start aria2c and web-UI.

The configuration file is something like:

max-concurrent-downloads=10  
max-connection-per-server=3
min-split-size=5M  
split=10