Webpack - https://webpack.github.io/ Gulp - http://gulpjs.com/ Grunt - https://gruntjs.com/ NPM scripts - https://docs.npmjs.com/misc/scripts

Travis - https://travis-ci.org/ Jenkins- https://jenkins.io/

I finally made sense of front end build tools. You can, too. https://medium.freecodecamp.com/making-sense-of-front-end-build-tools-3a1b3a87043b#.l5ih5cl83