cjs-async/parallel

var parallel = require('cjs-async/parallel'), taskList = [ function ( callback ) { setTimeout(function () { callback(null, true); }, 10); }, function ( callback ) { setTimeout(function () { callback(null, 256); }, 20); }, function ( callback ) { setTimeout(function () { callback(null, '512'); }, 0); }, function () { return 32; } ]; parallel(taskList, function ( error, results ) { if ( !error ) { // results contains array of the given tasks execution results // [true, 256, '512', 32] console.log(results); } });