debugcharts 
Go memory debug charts.
This package uses Plotly chart library. It is open source and free for use.
Installation
go get -v -u github.com/mkevac/debugcharts
Usage
Just install package and start http server. There is an example program here.
Then go to http://localhost:8080/debug/charts. You should see something like this:
Data is updated every second. We keep data for last day.
User https://github.com/dgryski/ proposed interesing way for turning debugcharts on/off for your project:
You can add tagged file like this in your code
// +build debugcharts
package main
import _ "github.com/mkevac/debugcharts"
If you want to use debugcharts, then build your project with -tags debugcharts
Development
I use bindata to pack binary files into executable. Run make to rebuild.