diff --git a/packages/map2tree/.babelrc b/packages/map2tree/.babelrc
new file mode 100755
index 00000000..9d06ebbb
--- /dev/null
+++ b/packages/map2tree/.babelrc
@@ -0,0 +1,3 @@
+{
+  "presets": ["es2015-loose", "stage-0"]
+}
diff --git a/packages/map2tree/.eslintignore b/packages/map2tree/.eslintignore
new file mode 100755
index 00000000..0d38857e
--- /dev/null
+++ b/packages/map2tree/.eslintignore
@@ -0,0 +1,4 @@
+lib
+**/node_modules
+**/webpack.config.js
+examples/**/server.js
\ No newline at end of file
diff --git a/packages/map2tree/.eslintrc b/packages/map2tree/.eslintrc
new file mode 100755
index 00000000..90cecc39
--- /dev/null
+++ b/packages/map2tree/.eslintrc
@@ -0,0 +1,10 @@
+{
+  "extends": "eslint:recommended",
+  "env": {
+    "browser": true,
+    "node": true,
+    "es6": true
+  },
+
+  "parser": "babel-eslint"
+}
diff --git a/packages/map2tree/.npmignore b/packages/map2tree/.npmignore
new file mode 100755
index 00000000..2929ccfd
--- /dev/null
+++ b/packages/map2tree/.npmignore
@@ -0,0 +1,4 @@
+.DS_Store
+*.log
+test
+.idea
diff --git a/packages/map2tree/LICENSE.md b/packages/map2tree/LICENSE.md
new file mode 100755
index 00000000..bff65e7d
--- /dev/null
+++ b/packages/map2tree/LICENSE.md
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Romain Séguy
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/packages/map2tree/README.md b/packages/map2tree/README.md
new file mode 100755
index 00000000..e36c21b9
--- /dev/null
+++ b/packages/map2tree/README.md
@@ -0,0 +1,88 @@
+A pure function to convert a map into a tree structure.
+
+The following opinions must be taken into account since the primary use case of this library is [redux-devtools-chart-monitor](https://github.com/romseguy/redux-devtools-chart-monitor):
+
+- Objects and arrays deeply nested within collections are not converted into a tree structure. See `someNestedObject` and `someNestedArray` in the [output](https://github.com/romseguy/map2tree#output) below, or the [corresponding test](https://github.com/romseguy/map2tree/blob/master/test/map2tree.js#L140).
+- Provides support for [Immutable.js](https://github.com/facebook/immutable-js) data structures (only List and Map though).
+
+
+# Usage
+
+
+```javascript
+map2tree(someMap, options = {
+  key: 'state',      // the name you want for as the root node of the output tree
+  pushMethod: 'push' // use 'unshift' to change the order children nodes are added
+})
+```
+
+# Input
+
+```javascript
+const someMap = {
+  someReducer: {
+    todos: [
+     {title: 'map', someNestedObject: {foo: 'bar'}},
+     {title: 'to', someNestedArray: ['foo', 'bar']},
+     {title: 'tree'},
+     {title: 'map2tree'}
+    ],
+    completedCount: 1
+  },
+  otherReducer: {
+    foo: 0,
+    bar:{key: 'value'}
+  }
+};
+```
+
+# Output
+
+```javascript
+{
+  name: `${options.key}`,
+  children: [
+    {
+      name: 'someReducer',
+      children: [
+        {
+          name: 'todos',
+          children: [
+            {
+              name: 'todo[0]',
+              object: {
+                title: 'map',
+                someNestedObject: {foo: 'bar'}
+              }
+            },
+            {
+              name: 'todo[1]',
+              object: {
+                title: 'to',
+                someNestedArray: ['foo', 'bar']
+              }
+            },
+            // ...
+          ]
+        },
+        // ...
+      ]
+    },
+    {
+      name: 'otherReducer',
+      children: [
+        {
+          name: 'foo',
+          value: 0
+        },
+        {
+          name: 'bar',
+          object: {
+            key: 'value'
+          }
+        }
+      ]
+    }
+  ]
+}
+```
diff --git a/packages/map2tree/package.json b/packages/map2tree/package.json
new file mode 100755
index 00000000..28edb23e
--- /dev/null
+++ b/packages/map2tree/package.json
@@ -0,0 +1,60 @@
+{
+  "name": "map2tree",
+  "version": "1.4.0",
+  "description": "Utility for mapping maps to trees",
+  "main": "lib/index.js",
+  "scripts": {
+    "clean": "rimraf lib dist",
+    "build": "babel src --out-dir lib",
+    "build:umd": "webpack src/index.js dist/map2tree.js && NODE_ENV=production webpack src/index.js dist/map2tree.min.js",
+    "lint": "eslint src test",
+    "test": "babel-node test/map2tree.js | tap-diff",
+    "check": "npm run lint && npm run test",
+    "prepublish": "npm run check && npm run clean && npm run build && npm run build:umd"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/romseguy/map2tree.git"
+  },
+  "keywords": [
+    "map2tree",
+    "map-to-tree",
+    "mapToTree",
+    "map",
+    "tree"
+  ],
+  "author": "romseguy",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/romseguy/map2tree/issues"
+  },
+  "homepage": "https://github.com/romseguy/map2tree",
+  "devDependencies": {
+    "babel-cli": "^6.3.15",
+    "babel-core": "^6.1.20",
+    "babel-eslint": "4.1.8",
+    "babel-loader": "^6.2.0",
+    "babel-preset-es2015-loose": "^6.1.3",
+    "babel-preset-react": "^6.3.13",
+    "babel-preset-stage-0": "^6.3.13",
+    "eslint": "1.10.3",
+    "immutable": "3.7.6",
+    "rimraf": "^2.3.4",
+    "tap-diff": "0.1.1",
+    "tap-spec": "4.1.1",
+    "tape": "4.4.0",
+    "webpack": "1.12.13"
+  },
+  "dependencies": {
+    "lodash": "^4.2.1"
+  },
+  "npmName": "map2tree",
+  "npmFileMap": [
+    {
+      "basePath": "/dist/",
+      "files": [
+        "*.js"
+      ]
+    }
+  ]
+}
diff --git a/packages/map2tree/src/index.js b/packages/map2tree/src/index.js
new file mode 100755
index 00000000..83b8b1a6
--- /dev/null
+++ b/packages/map2tree/src/index.js
@@ -0,0 +1,68 @@
+import isArray from 'lodash/isArray';
+import isPlainObject from 'lodash/isPlainObject';
+import mapValues from 'lodash/mapValues';
+
+function visit(parent, visitFn, childrenFn) {
+  if (!parent) return;
+
+  visitFn(parent);
+
+  const children = childrenFn(parent);
+  if (children) {
+    const count = children.length;
+    for (let i = 0; i < count; i++) {
+      visit(children[i], visitFn, childrenFn);
+    }
+  }
+}
+
+function getNode(tree, key) {
+  let node = null;
+
+  visit(tree, d => {
+    if (d.name === key) {
+      node = d;
+    }
+  }, d => d.children);
+
+  return node;
+}
+
+export default function map2tree(root, options = {}, tree = {name: options.key || 'state', children: []}) {
+  if (!isPlainObject(root) && root && !root.toJS) {
+    return {};
+  }
+
+  const { key: rootNodeKey = 'state', pushMethod = 'push' } = options;
+  const currentNode = getNode(tree, rootNodeKey);
+
+  if (currentNode === null) {
+    return {};
+  }
+
+  mapValues(root && root.toJS ? root.toJS() : root, (maybeImmutable, key) => {
+    const value = maybeImmutable && maybeImmutable.toJS ? maybeImmutable.toJS() : maybeImmutable;
+    let newNode = {name: key};
+
+    if (isArray(value)) {
+      newNode.children = [];
+
+      for (let i = 0; i < value.length; i++) {
+        newNode.children[pushMethod]({
+          name: `${key}[${i}]`,
+          [isPlainObject(value[i]) ? 'object' : 'value']: value[i]
+        });
+      }
+    } else if (isPlainObject(value)) {
+      newNode.children = [];
+    } else {
+      newNode.value = value;
+    }
+
+    currentNode.children[pushMethod](newNode);
+
+    map2tree(value, {key, pushMethod}, tree);
+  });
+
+  return tree;
+}
diff --git a/packages/map2tree/test/map2tree.js b/packages/map2tree/test/map2tree.js
new file mode 100755
index 00000000..aecd86ab
--- /dev/null
+++ b/packages/map2tree/test/map2tree.js
@@ -0,0 +1,253 @@
+import test from 'tape';
+import map2tree from '../src';
+import immutable from 'immutable';
+
+test('# rootNodeKey', assert => {
+  const map = {};
+  const options = {key: 'foo'};
+
+  assert.equal(map2tree(map, options).name, 'foo');
+  assert.end();
+});
+
+test('# shallow map', nest => {
+  nest.test('## null', assert => {
+    const map = {
+      a: null
+    };
+
+    const expected = {
+      name: 'state',
+      children: [
+        {name: 'a', value: null}
+      ]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  });
+
+  nest.test('## value', assert => {
+    const map = {
+      a: 'foo',
+      b: 'bar'
+    };
+
+    const expected = {
+      name: 'state',
+      children: [
+        {name: 'a', value: 'foo'},
+        {name: 'b', value: 'bar'}
+      ]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  });
+
+  nest.test('## object', assert => {
+    const map = {
+      a: {aa: 'foo'}
+    };
+
+    const expected = {
+      name: 'state',
+      children: [
+        {name: 'a', children: [{name: 'aa', value: 'foo'}]}
+      ]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  });
+
+  nest.test('## immutable Map', assert => {
+    const map = {
+      a: immutable.fromJS({aa: 'foo', ab: 'bar'})
+    };
+
+    const expected = {
+      name: 'state',
+      children: [
+        {name: 'a', children: [{name: 'aa', value: 'foo'}, {name: 'ab', value: 'bar'}]}
+      ]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.end();
+  })
+});
+
+test('# deep map', nest => {
+  nest.test('## null', assert => {
+    const map = {
+      a: {aa: null}
+    };
+
+    const expected = {
+      name: 'state',
+      children: [
+        {
+          name: 'a',
+          children: [
+            {
+              name: 'aa',
+              value: null
+            }
+          ]
+        }
+      ]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  });
+
+  nest.test('## object', assert => {
+    const map = {
+      a: {aa: {aaa: 'foo'}}
+    };
+
+    const expected = {
+      name: 'state',
+      children: [
+        {
+          name: 'a',
+          children: [
+            {
+              name: 'aa',
+              children: [
+                {name: 'aaa', value: 'foo'}
+              ]
+            }
+          ]
+        }
+      ]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  });
+});
+
+test('# array map', nest => {
+  const map = {
+    a: [
+      1,
+      2
+    ]
+  };
+
+  nest.test('## push', assert => {
+    const expected = {
+      name: 'state',
+      children: [{
+        name: 'a',
+        children: [
+          {name: 'a[0]', value: 1},
+          {name: 'a[1]', value: 2}]
+      }]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  });
+
+  nest.test('## unshift', assert => {
+    const options = {pushMethod: 'unshift'};
+    const expected = {
+      name: 'state',
+      children: [{
+        name: 'a',
+        children: [
+          {name: 'a[1]', value: 2},
+          {name: 'a[0]', value: 1}
+        ]
+      }]
+    };
+
+    assert.deepEqual(map2tree(map, options), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map), options), expected, 'immutable');
+    assert.end();
+  });
+
+  nest.test('## null', assert => {
+    const map = {
+      a: [
+        null
+      ]
+    };
+
+    const expected = {
+      name: 'state',
+      children: [{
+        name: 'a',
+        children: [
+          {name: 'a[0]', value: null}
+        ]
+      }]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  })
+});
+
+test('# collection map', nest => {
+  nest.test('## value', assert => {
+    const map = {
+      a: [
+        {aa: 1},
+        {aa: 2}
+      ]
+    };
+
+    const expected = {
+      name: 'state',
+      children: [
+        {
+          name: 'a',
+          children: [
+            {name: 'a[0]', object: {aa: 1}},
+            {name: 'a[1]', object: {aa: 2}}
+          ]
+        }
+      ]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  });
+
+  nest.test('## object', assert => {
+    const map = {
+      a: [
+        {aa: {aaa: 'foo'}}
+      ]
+    };
+
+    const expected = {
+      name: 'state',
+      children: [
+        {
+          name: 'a',
+          children: [
+            {name: 'a[0]', object: {aa: {aaa: 'foo'}}}
+          ]
+        }
+      ]
+    };
+
+    assert.deepEqual(map2tree(map), expected);
+    assert.deepEqual(map2tree(immutable.fromJS(map)), expected, 'immutable');
+    assert.end();
+  })
+});
diff --git a/packages/map2tree/webpack.config.js b/packages/map2tree/webpack.config.js
new file mode 100755
index 00000000..dda00392
--- /dev/null
+++ b/packages/map2tree/webpack.config.js
@@ -0,0 +1,39 @@
+'use strict';
+
+var webpack = require('webpack');
+
+var plugins = [
+  new webpack.optimize.OccurenceOrderPlugin(),
+  new webpack.DefinePlugin({
+    'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
+  })
+];
+
+if (process.env.NODE_ENV === 'production') {
+  plugins.push(
+    new webpack.optimize.UglifyJsPlugin({
+      compressor: {
+        screw_ie8: true,
+        warnings: false
+      }
+    })
+  );
+}
+
+module.exports = {
+  module: {
+    loaders: [{
+      test: /\.js$/,
+      loaders: ['babel-loader'],
+      exclude: /node_modules/
+    }]
+  },
+  output: {
+    library: 'map2tree',
+    libraryTarget: 'umd'
+  },
+  plugins: plugins,
+  resolve: {
+    extensions: ['', '.js']
+  }
+};