Maintenance status:

TileMill has shifted to an open open source contributor model and moved to its own organization, tilemill-project.

Mapbox

• Mapbox Studio: the official, supported successor to TileMill

Community

• Kosmtik: alternative to TileMill
• TileOven: fork of TileMill with Node 4 support

To install from source just do:

git clone https://github.com/tilemill-project/tilemill.git cd tilemill npm install 

Then to start TileMill do:

./index.js # and then view http://localhost:20009 in your web browser 

For more extended details follow:

• Install packages
• Build from source