Gist is described as 'Turn data into stories with data-driven applications'. There are six alternatives to Gist for a variety of platforms, including Online / Web-based, Mac, Windows, Self-Hosted solutions and SaaS. The best alternative is Tableau. It's not free, so if you're looking for a free alternative, you could try RAWGraphs or Plotly. Other great apps like Gist are Google Data Studio (Free), Google Charts (Free) and LightCat (Free).
RAWGraphs is an open source app built with the goal of making the visualization of complex data easy for everyone. Born as tool for designers and vis geeks, RAWGraphs aims at providing a missing link between spreadsheets and vector graphics editors.
The Google Charts is an extremely simple tool that lets you easily create a chart from some data and embed it in a webpage. You embed the data and formatting parameters in an HTTP request, and Google returns a PNG image of the chart.