xget
xget is a forked codebase of zyedidia/eget focusing on some additional features and improvements. The original project does not seem to be actively maintained. The version of xget is starting at v2.0.0 to avoid confusion with the original project.
xget is the best way to easily get pre-built binaries for your favorite tools. It downloads and extracts pre-built binaries from releases on GitHub or GitLab. To use it, provide a repository and xget will search through the assets from the latest release in an attempt to find a suitable prebuilt binary for your system. If one is found, the asset will be downloaded and xget will extract the binary to the current directory. xget should only be used for installing simple, static prebuilt binaries, where the extracted binary is all that is needed for installation. For more complex installation, you may use the --download-only option, and perform extraction manually.

For software maintainers, if you provide prebuilt binaries on GitHub or GitLab, you can list xget as a one-line method for users to install your software.
xget has a number of detection mechanisms and should work out-of-the-box with most software that is distributed via single binaries on GitHub or GitLab releases. First try using xget on your software, it may already just work. Otherwise, see the FAQ for a clear set of rules to make your software compatible with xget.