getgo checks https://golang.org/dl/?mode=json to download the latest stable version of Go and verify its checksum.
The tool won't download the binary if a verified one already exists locally.

It is command line utility with an experimental GUI mode that is only half-baked.

Install

Pre-built Binaries

Pre-built binaries are available in the Releases section or be built from source if you already have Go installed:

go get lazyhacker.dev/getgo

Compile From Source

If you've downloaded the source then the standard Go tool for building can be used:

go build .

Usage

Just run getgo to download the most recent stable archive for the platform it is running from. To also extract the archive run it with the '-x' flag:

getgo -x <dir to extract to>

On Windows, getgo can be told to download the installer with:

getgo -kind installer

To download to a specific directory:

getgo -dir ~/Downloads

To download another OS and/or arch version, use the '-os' and the '-arch' flags:

getgo -os windows -arch amd64

To get help info:

getgo -help

Full Example

I use getgo make it easier for me to download Go when a new release comes out.

Instead of:

1. Download Go from golang.org.
2. Verify the checksum.
3. Delete the installed version of Go.
4. Untar the downloaded .tar.gz.

It becomes:

sudo rm /usr/local/go
sudo getgo -x /usr/local

Experimental GUI version

I'm experimenting with building GUI apps with Go. Fyne is a cross-platform Go GUI toolkit that I started testing.

To try the Fyne version (require installing Fyne and its dependencies):

go get lazyhacker.dev/getgo
go run -tags gui lazyhacker.dev/getgo