diff --git a/app/js/services/projects.js b/app/js/services/projects.js
new file mode 100644
index 00000000..4252c690
--- /dev/null
+++ b/app/js/services/projects.js
@@ -0,0 +1,60 @@
+'use strict';
+
+var angular = require('angular');
+var servicesModule = require('./_index.js');
+
+/**
+ * @ngInject
+ */
+var projectService = function(projectFactory, metricsService) {
+  var service = {};
+
+  var findOrCreate = function(index, storage, key, createFunction) {
+    var obj = index[key] || createFunction(key);
+    if (!index[key]) {
+      index[key] = obj;
+      storage.push(obj);
+    }
+    return obj;
+  };
+
+  var byDate = function(stats1, stats2) {
+    return stats1.date - stats2.date;
+  };
+
+  var createDateStats = function(date) {
+    return { date: date, metrics: metricsService.getNewMetrics() };
+  };
+
+  service.createProjects = function(runsJson) {
+    var projects = [];
+    var index = {};
+
+    angular.forEach(runsJson, function(projectsJson, dateString) {
+      angular.forEach(projectsJson, function(runEntries, name) {
+        var project = findOrCreate(index, projects, name, projectFactory.create);
+        project.addRuns(dateString, runEntries);
+      });
+    });
+
+    return projects;
+  };
+
+  service.getStatsByDate = function(projects) {
+    var index = {};
+    var dateStats = [];
+
+    angular.forEach(projects, function(project) {
+      angular.forEach(project.runs, function(run) {
+        var stats = findOrCreate(index, dateStats, run.date, createDateStats);
+        stats.metrics = metricsService.addMetrics(stats.metrics, run.metrics);
+      });
+    });
+
+    return dateStats.sort(byDate);
+  };
+
+  return service;
+};
+
+servicesModule.service('projectService', projectService);
diff --git a/test/unit/services/projects_spec.js b/test/unit/services/projects_spec.js
new file mode 100644
index 00000000..74437319
--- /dev/null
+++ b/test/unit/services/projects_spec.js
@@ -0,0 +1,84 @@
+describe('ProjectService', function() {
+  var projectService;
+
+  beforeEach(function() {
+    module('app.services');
+
+    var mockProjectFactory = {
+      create: function(name) {
+        return {addRuns: function() {}};
+      }
+    };
+    var mockMetricsService = {
+      getFailRate: function() { return 0.5; },
+      getNewMetrics: function() { return {}; },
+      addMetrics: function() { return 'updated'; }
+    };
+
+    module(function($provide) {
+      $provide.value('projectFactory', mockProjectFactory);
+      $provide.value('metricsService', mockMetricsService);
+    });
+
+    inject(function($injector) {
+      projectService = $injector.get('projectService');
+    });
+  });
+
+  it('should create projects from runs per datetime', function() {
+    var runs = {
+      '2015-10-10T20:00:00': {
+        'openstack/heat': [{ fail: 1, pass: 0, skip: 0 }],
+        'openstack/keystone': [{ fail: 0, pass: 1, skip: 0 }],
+        'openstack/tempest': [{ fail: 0, pass: 0, skip: 1 }]
+      }
+    };
+
+    var projects = projectService.createProjects(runs);
+
+    expect(projects.length).toEqual(3);
+  });
+
+  it('should update projects from different datetimes', function() {
+    var runs = {
+      '2015-10-10t20:00:00': {
+        'openstack/tempest': [{ fail: 0, pass: 0, skip: 1 }]
+      },
+      '2015-11-11t20:00:00': {
+        'openstack/heat': [{ fail: 1, pass: 0, skip: 0 }],
+        'openstack/tempest': [{ fail: 0, pass: 0, skip: 1 }]
+      }
+    };
+
+    var projects = projectService.createProjects(runs);
+
+    expect(projects.length).toEqual(2);
+  });
+
+  it('should aggregate project stats by date', function() {
+    var generateProject = function(name, date, passes, failures, skips) {
+      return {
+        name: name,
+        runs: [{ date: date, passes: passes, failures: failures, skips: skips }]
+      };
+    };
+    var date1 = new Date('2015-10-10T20:00:00');
+    var date2 = new Date('2015-11-11T20:00:00');
+    var projects = [
+      generateProject('p1', date1, 1, 2, 3),
+      generateProject('p2', date1, 4, 5, 6),
+      generateProject('p3', date2, 7, 8, 9),
+      generateProject('p4', date2, 0, 1, 2)
+    ];
+
+    var stats = projectService.getStatsByDate(projects);
+
+    expect(stats.length).toEqual(2);
+
+    expect(stats[0].date).toEqual(date1);
+    expect(stats[0].metrics).toEqual('updated');
+
+    expect(stats[1].date).toEqual(date2);
+    expect(stats[1].metrics).toEqual('updated');
+  });
+});