diff --git a/package.json b/package.json
index d96e10b4e..6510f3e0c 100644
--- a/package.json
+++ b/package.json
@@ -7,15 +7,15 @@
     "ctags": "0.3.0",
     "oniguruma": "0.8.0",
     "mkdirp": "0.3.5",
-    "git-utils": "0.12.0",
+    "git-utils": "0.13.0",
     "underscore": "1.4.4",
     "d3": "3.0.8",
     "coffee-cache": "0.1.0",
     "pegjs": "0.7.0",
     "async": "0.2.6",
     "nak": "0.2.12",
-    "spellchecker": "0.2.0",
-    "pathwatcher": "0.1.5",
+    "spellchecker": "0.3.0",
+    "pathwatcher": "0.2.0",
     "plist": "git://github.com/nathansobo/node-plist.git",
     "space-pen": "git://github.com/nathansobo/space-pen.git"
   },
diff --git a/spec/app/editor-spec.coffee b/spec/app/editor-spec.coffee
index c7d21989e..868226f5f 100644
--- a/spec/app/editor-spec.coffee
+++ b/spec/app/editor-spec.coffee
@@ -2552,3 +2552,14 @@ describe "Editor", ->
 
         runs ->
           expect(editor.renderedLines.find('.line').text()).toBe 'hidden changes'
+
+  describe "editor:scroll-to-cursor", ->
+    it "scrolls to and centers the editor on the cursor's position", ->
+      editor.attachToDom(heightInLines: 3)
+      editor.setCursorBufferPosition([1, 2])
+      editor.scrollToBottom()
+      expect(editor.getFirstVisibleScreenRow()).not.toBe 0
+      expect(editor.getLastVisibleScreenRow()).not.toBe 2
+      editor.trigger('editor:scroll-to-cursor')
+      expect(editor.getFirstVisibleScreenRow()).toBe 0
+      expect(editor.getLastVisibleScreenRow()).toBe 2
diff --git a/src/app/editor.coffee b/src/app/editor.coffee
index dff8f920e..7b4c9fb55 100644
--- a/src/app/editor.coffee
+++ b/src/app/editor.coffee
@@ -177,6 +177,7 @@ class Editor extends View
         'editor:toggle-indent-guide': => config.set('editor.showIndentGuide', !config.get('editor.showIndentGuide'))
         'editor:save-debug-snapshot': @saveDebugSnapshot
         'editor:toggle-line-numbers': =>  config.set('editor.showLineNumbers', !config.get('editor.showLineNumbers'))
+        'editor:scroll-to-cursor': @scrollToCursorPosition
 
     documentation = {}
     for name, method of editorBindings
@@ -768,6 +769,9 @@ class Editor extends View
   scrollToBottom: ->
     @scrollBottom(@screenLineCount() * @lineHeight)
 
+  scrollToCursorPosition: ->
+    @scrollToBufferPosition(@getCursorBufferPosition(), center: true)
+
   # Public: Scrolls the editor to the given buffer position.
   #
   # bufferPosition - An object that represents a buffer position. It can be either
diff --git a/src/app/git.coffee b/src/app/git.coffee
index 175746237..02cafde74 100644
--- a/src/app/git.coffee
+++ b/src/app/git.coffee
@@ -60,7 +60,7 @@ class Git
 
   # Public: Reread the index to update any values that have changed since the last time the index was read.
   refreshIndex: -> @getRepo().refreshIndex()
-  
+
   # Public: Retrieves the path of the repository.
   #
   # Returns a {String}.
@@ -219,7 +219,7 @@ class Git
   # path - The {String} path to check
   #
   # Returns a {Number} representing the status.
-  getDirectoryStatus: (directoryPath) ->
+  getDirectoryStatus: (directoryPath)  ->
     directoryPath = "#{directoryPath}/"
     directoryStatus = 0
     for path, status of @statuses
@@ -234,5 +234,8 @@ class Git
   getAheadBehindCounts: ->
     @getRepo().getAheadBehindCount()
 
+  getLineDiffs: (path, text) ->
+    @getRepo().getLineDiffs(@relativize(path), text)
+
 _.extend Git.prototype, Subscriber
 _.extend Git.prototype, EventEmitter
diff --git a/src/app/gutter.coffee b/src/app/gutter.coffee
index da97e6e89..76bf22cad 100644
--- a/src/app/gutter.coffee
+++ b/src/app/gutter.coffee
@@ -76,7 +76,7 @@ class Gutter extends View
           rowValue = (row + 1).toString()
         classes = ['line-number']
         classes.push('fold') if editor.isFoldedAtBufferRow(row)
-        @div class: classes.join(' '), =>
+        @div lineNumber: row, class: classes.join(' '), =>
           rowValuePadding = _.multiplyString(' ', maxDigits - rowValue.length)
           @raw("#{rowValuePadding}#{rowValue}")
 
diff --git a/src/app/keymaps/editor.cson b/src/app/keymaps/editor.cson
index 07568fc0b..f1af1b842 100644
--- a/src/app/keymaps/editor.cson
+++ b/src/app/keymaps/editor.cson
@@ -27,6 +27,7 @@
   'ctrl-meta-down': 'editor:move-line-down'
   'meta-D': 'editor:duplicate-line'
   'ctrl-J': 'editor:join-line'
+  'meta-<': 'editor:scroll-to-cursor'
 
 '.editor.mini':
   'enter': 'core:confirm',
diff --git a/src/packages/git-diff/lib/git-diff-view.coffee b/src/packages/git-diff/lib/git-diff-view.coffee
new file mode 100644
index 000000000..bff48f146
--- /dev/null
+++ b/src/packages/git-diff/lib/git-diff-view.coffee
@@ -0,0 +1,66 @@
+_ = require 'underscore'
+
+module.exports =
+class GitDiffView
+  diffs: null
+  editor: null
+
+  constructor: (@editor) ->
+    @gutter = @editor.gutter
+    @diffs = {}
+
+    @editor.on 'editor:path-changed', => @subscribeToBuffer()
+    @editor.on 'editor:display-updated', => @renderDiffs()
+    git.on 'statuses-changed', =>
+      @diffs = {}
+      @scheduleDiffs()
+    git.on 'status-changed', (path) =>
+      delete @diffs[path]
+      @scheduleDiffs() if path is @editor.getPath()
+
+    @subscribeToBuffer()
+
+  subscribeToBuffer: ->
+    if @buffer?
+      @removeDiffs()
+      delete @diffs[@buffer.getPath()] if @buffer.destroyed
+      @buffer.off '.git-diff'
+      @buffer = null
+
+    if @buffer = @editor.getBuffer()
+      @scheduleDiffs() unless @diffs[@buffer.getPath()]?
+      @buffer.on 'contents-modified.git-diff', =>
+        @generateDiffs()
+        @renderDiffs()
+
+  scheduleDiffs: ->
+    _.nextTick =>
+      @generateDiffs()
+      @renderDiffs()
+
+  generateDiffs: ->
+    if path = @buffer.getPath()
+      @diffs[path] = git?.getLineDiffs(path, @buffer.getText())
+
+  removeDiffs: ->
+    if @gutter.hasGitLineDiffs
+      @gutter.find('.line-number').removeClass('git-line-added git-line-modified git-line-removed')
+      @gutter.hasGitLineDiffs = false
+
+  renderDiffs: ->
+    return unless @gutter.isVisible()
+
+    @removeDiffs()
+
+    hunks = @diffs[@editor.getPath()] ? []
+    linesHighlighted = 0
+    for hunk in hunks
+      if hunk.oldLines is 0 and hunk.newLines > 0
+        for row in [hunk.newStart...hunk.newStart + hunk.newLines]
+          linesHighlighted += @gutter.find(".line-number[lineNumber=#{row - 1}]").addClass('git-line-added').length
+      else if hunk.newLines is 0 and hunk.oldLines > 0
+        linesHighlighted += @gutter.find(".line-number[lineNumber=#{hunk.newStart - 1}]").addClass('git-line-removed').length
+      else
+        for row in [hunk.newStart...hunk.newStart + hunk.newLines]
+          linesHighlighted += @gutter.find(".line-number[lineNumber=#{row - 1}]").addClass('git-line-modified').length
+    @gutter.hasGitLineDiffs = linesHighlighted > 0
diff --git a/src/packages/git-diff/lib/git-diff.coffee b/src/packages/git-diff/lib/git-diff.coffee
new file mode 100644
index 000000000..127eb4b81
--- /dev/null
+++ b/src/packages/git-diff/lib/git-diff.coffee
@@ -0,0 +1,12 @@
+GitDiffView = require './git-diff-view'
+
+module.exports =
+  configDefaults:
+    enabled: false
+
+  activate: ->
+    return unless git?
+    return unless config.get('git-diff.enabled')
+
+    rootView.eachEditor (editor) =>
+      new GitDiffView(editor) if git? and editor.getPane()?
diff --git a/src/packages/git-diff/package.cson b/src/packages/git-diff/package.cson
new file mode 100644
index 000000000..8fe8b9080
--- /dev/null
+++ b/src/packages/git-diff/package.cson
@@ -0,0 +1 @@
+'main': 'lib/git-diff'
diff --git a/src/packages/git-diff/spec/git-diff-spec.coffee b/src/packages/git-diff/spec/git-diff-spec.coffee
new file mode 100644
index 000000000..a800ac37a
--- /dev/null
+++ b/src/packages/git-diff/spec/git-diff-spec.coffee
@@ -0,0 +1,63 @@
+RootView = require 'root-view'
+_ = require 'underscore'
+
+describe "GitDiff package", ->
+  editor = null
+
+  beforeEach ->
+    config.set('git-diff.enabled', true)
+    window.rootView = new RootView
+    rootView.attachToDom()
+    rootView.open('sample.js')
+    atom.activatePackage('git-diff')
+    editor = rootView.getActiveView()
+
+  describe "when the editor has modified lines", ->
+    it "highlights the modified lines", ->
+      expect(editor.find('.git-line-modified').length).toBe 0
+      editor.insertText('a')
+      advanceClock(editor.getBuffer().stoppedChangingDelay)
+      expect(editor.find('.git-line-modified').length).toBe 1
+      expect(editor.find('.git-line-modified').attr('lineNumber')).toBe '0'
+
+  describe "when the editor has added lines", ->
+    it "highlights the added lines", ->
+      expect(editor.find('.git-line-added').length).toBe 0
+      editor.moveCursorToEndOfLine()
+      editor.insertNewline()
+      editor.insertText('a')
+      advanceClock(editor.getBuffer().stoppedChangingDelay)
+      expect(editor.find('.git-line-added').length).toBe 1
+      expect(editor.find('.git-line-added').attr('lineNumber')).toBe '1'
+
+  describe "when the editor has removed lines", ->
+    it "highlights the line preceeding the deleted lines", ->
+      expect(editor.find('.git-line-added').length).toBe 0
+      editor.setCursorBufferPosition([5])
+      editor.deleteLine()
+      advanceClock(editor.getBuffer().stoppedChangingDelay)
+      expect(editor.find('.git-line-removed').length).toBe 1
+      expect(editor.find('.git-line-removed').attr('lineNumber')).toBe '4'
+
+  describe "when a modified line is restored to the HEAD version contents", ->
+    it "removes the diff highlight", ->
+      expect(editor.find('.git-line-modified').length).toBe 0
+      editor.insertText('a')
+      advanceClock(editor.getBuffer().stoppedChangingDelay)
+      expect(editor.find('.git-line-modified').length).toBe 1
+      editor.backspace()
+      advanceClock(editor.getBuffer().stoppedChangingDelay)
+      expect(editor.find('.git-line-modified').length).toBe 0
+
+  describe "when a modified file is opened", ->
+    it "highlights the changed lines", ->
+      path = project.resolve('sample.txt')
+      buffer = project.buildBuffer(path)
+      buffer.setText("Some different text.")
+      rootView.open('sample.txt')
+      nextTick = false
+      _.nextTick -> nextTick = true
+      waitsFor -> nextTick
+      runs ->
+        expect(editor.find('.git-line-modified').length).toBe 1
+        expect(editor.find('.git-line-modified').attr('lineNumber')).toBe '0'
diff --git a/src/packages/git-diff/stylesheets/git-diff.less b/src/packages/git-diff/stylesheets/git-diff.less
new file mode 100644
index 000000000..a04bed75d
--- /dev/null
+++ b/src/packages/git-diff/stylesheets/git-diff.less
@@ -0,0 +1,11 @@
+.git-line-modified {
+  color: #f78a46;
+}
+
+.git-line-added {
+  color: #5293d8;
+}
+
+.git-line-removed {
+  color: #c41e3a;
+}