sea is a package manager written in POSIX shell script for POSIX shell scripts.
The package manager is actually in heavy stage of development, it is highly recommended to not download it.
To install sea, just use the install script.
$ git clone https://github.com/h34ting4ppliance/sea.git
$ cd sea
# ./install.sh
From the repos
sea i package
sea r package
Query all packages
sea q
Query one package
sea q package
Query packages based on a tag
sea q -t "util"
sea s package.tar.gz