diff --git a/.gitignore b/.gitignore
index 5eb00dd..b21c98f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 .coverage
-changedifferently.egg-info
 coverage.xml
 dist
 htmlcov
+stackdiff.egg-info
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 8fc84f7..0c6e0be 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,5 +1,6 @@
 {
   "cSpell.words": [
-    "changedifferently"
+    "epilog",
+    "stackdiff"
   ]
 }
diff --git a/MANIFEST.in b/MANIFEST.in
index 5bf729f..23946b8 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +1 @@
-include changedifferently/version/VERSION
+include stackdiff/version/VERSION
diff --git a/Pipfile b/Pipfile
index 737059e..294ebc2 100644
--- a/Pipfile
+++ b/Pipfile
@@ -4,15 +4,21 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
+ansiscape = "~=1.0"
+boto3 = "~=1.18"
+differently = "==1.0.0a6"
+tabulate = "~=0.8"
 
 [dev-packages]
 black = "==21.9b0"
+boto3-stubs = {extras = ["cloudformation"], version = "*"}
 flake8 = "*"
 isort = "*"
 mypy = "*"
 pytest = "*"
 pytest-cov = "*"
 twine = "*"
+types-tabulate = "~=0.8"
 shellcheck-py = "*"
 yamllint = "*"
 
diff --git a/Pipfile.lock b/Pipfile.lock
index d0af2f4..5321c57 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "637d4933ebcc63d46659f21e5ae090491cd9f36c049f2e388816825cbbfdbaf4"
+            "sha256": "7836fb966c6d18e11f7ccc9cd557240779b9a0073920dd8e3f03b2ebbb3a1d1d"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -15,7 +15,125 @@
             }
         ]
     },
-    "default": {},
+    "default": {
+        "ansiscape": {
+            "hashes": [
+                "sha256:c3602a832cc4e56782c988e415c2436dee64cb1f34b2eb08c73abf71f2cc3eda"
+            ],
+            "index": "pypi",
+            "version": "==1.1.0"
+        },
+        "boto3": {
+            "hashes": [
+                "sha256:11a6035060230e92327d4f10fef6bc44188b2cd68504012bc25ed62ac31d670b",
+                "sha256:1b8fac5f11ee1d185770d7619f2212e67e636ce190512770d0d36fd162739628"
+            ],
+            "index": "pypi",
+            "version": "==1.19.2"
+        },
+        "botocore": {
+            "hashes": [
+                "sha256:011360e79a4b843aa6591573cfa61e8eddc99b91adab1dfdb9a2b7f2c8511193",
+                "sha256:681d0d854d08beb9a5727152e95a884439b76cf19fb38d69ca2f17f1404d48ae"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==1.22.2"
+        },
+        "differently": {
+            "hashes": [
+                "sha256:28692ffdb36af07a00d4e462093c1634818ad3b612121f92068e5e03a2f6e8f0"
+            ],
+            "index": "pypi",
+            "version": "==1.0.0a6"
+        },
+        "jmespath": {
+            "hashes": [
+                "sha256:b85d0567b8666149a93172712e68920734333c0ce7e89b78b3e987f71e5ed4f9",
+                "sha256:cdf6525904cc597730141d61b36f2e4b8ecc257c420fa2f4549bac2c2d0cb72f"
+            ],
+            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==0.10.0"
+        },
+        "python-dateutil": {
+            "hashes": [
+                "sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86",
+                "sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==2.8.2"
+        },
+        "pyyaml": {
+            "hashes": [
+                "sha256:0283c35a6a9fbf047493e3a0ce8d79ef5030852c51e9d911a27badfde0605293",
+                "sha256:055d937d65826939cb044fc8c9b08889e8c743fdc6a32b33e2390f66013e449b",
+                "sha256:07751360502caac1c067a8132d150cf3d61339af5691fe9e87803040dbc5db57",
+                "sha256:0b4624f379dab24d3725ffde76559cff63d9ec94e1736b556dacdfebe5ab6d4b",
+                "sha256:0ce82d761c532fe4ec3f87fc45688bdd3a4c1dc5e0b4a19814b9009a29baefd4",
+                "sha256:1e4747bc279b4f613a09eb64bba2ba602d8a6664c6ce6396a4d0cd413a50ce07",
+                "sha256:213c60cd50106436cc818accf5baa1aba61c0189ff610f64f4a3e8c6726218ba",
+                "sha256:231710d57adfd809ef5d34183b8ed1eeae3f76459c18fb4a0b373ad56bedcdd9",
+                "sha256:277a0ef2981ca40581a47093e9e2d13b3f1fbbeffae064c1d21bfceba2030287",
+                "sha256:2cd5df3de48857ed0544b34e2d40e9fac445930039f3cfe4bcc592a1f836d513",
+                "sha256:40527857252b61eacd1d9af500c3337ba8deb8fc298940291486c465c8b46ec0",
+                "sha256:473f9edb243cb1935ab5a084eb238d842fb8f404ed2193a915d1784b5a6b5fc0",
+                "sha256:48c346915c114f5fdb3ead70312bd042a953a8ce5c7106d5bfb1a5254e47da92",
+                "sha256:50602afada6d6cbfad699b0c7bb50d5ccffa7e46a3d738092afddc1f9758427f",
+                "sha256:68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2",
+                "sha256:77f396e6ef4c73fdc33a9157446466f1cff553d979bd00ecb64385760c6babdc",
+                "sha256:819b3830a1543db06c4d4b865e70ded25be52a2e0631ccd2f6a47a2822f2fd7c",
+                "sha256:897b80890765f037df3403d22bab41627ca8811ae55e9a722fd0392850ec4d86",
+                "sha256:98c4d36e99714e55cfbaaee6dd5badbc9a1ec339ebfc3b1f52e293aee6bb71a4",
+                "sha256:9df7ed3b3d2e0ecfe09e14741b857df43adb5a3ddadc919a2d94fbdf78fea53c",
+                "sha256:9fa600030013c4de8165339db93d182b9431076eb98eb40ee068700c9c813e34",
+                "sha256:a80a78046a72361de73f8f395f1f1e49f956c6be882eed58505a15f3e430962b",
+                "sha256:b3d267842bf12586ba6c734f89d1f5b871df0273157918b0ccefa29deb05c21c",
+                "sha256:b5b9eccad747aabaaffbc6064800670f0c297e52c12754eb1d976c57e4f74dcb",
+                "sha256:c5687b8d43cf58545ade1fe3e055f70eac7a5a1a0bf42824308d868289a95737",
+                "sha256:cba8c411ef271aa037d7357a2bc8f9ee8b58b9965831d9e51baf703280dc73d3",
+                "sha256:d15a181d1ecd0d4270dc32edb46f7cb7733c7c508857278d3d378d14d606db2d",
+                "sha256:d4db7c7aef085872ef65a8fd7d6d09a14ae91f691dec3e87ee5ee0539d516f53",
+                "sha256:d4eccecf9adf6fbcc6861a38015c2a64f38b9d94838ac1810a9023a0609e1b78",
+                "sha256:d67d839ede4ed1b28a4e8909735fc992a923cdb84e618544973d7dfc71540803",
+                "sha256:daf496c58a8c52083df09b80c860005194014c3698698d1a57cbcfa182142a3a",
+                "sha256:e61ceaab6f49fb8bdfaa0f92c4b57bcfbea54c09277b1b4f7ac376bfb7a7c174",
+                "sha256:f84fbc98b019fef2ee9a1cb3ce93e3187a6df0b2538a651bfb890254ba9f90b5"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==6.0"
+        },
+        "s3transfer": {
+            "hashes": [
+                "sha256:50ed823e1dc5868ad40c8dc92072f757aa0e653a192845c94a3b676f4a62da4c",
+                "sha256:9c1dc369814391a6bda20ebbf4b70a0f34630592c9aa520856bf384916af2803"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==0.5.0"
+        },
+        "six": {
+            "hashes": [
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.16.0"
+        },
+        "tabulate": {
+            "hashes": [
+                "sha256:d7c013fe7abbc5e491394e10fa845f8f32fe54f8dc60c6622c6cf482d25d47e4",
+                "sha256:eb1d13f25760052e8931f2ef80aaf6045a6cceb47514db8beab24cded16f13a7"
+            ],
+            "index": "pypi",
+            "version": "==0.8.9"
+        },
+        "urllib3": {
+            "hashes": [
+                "sha256:4987c65554f7a2dbf30c18fd48778ef124af6fab771a377103da0585e2336ece",
+                "sha256:c4fdf4019605b6e5423637e01bc9fe4daef873709a7973e195ceba0a62bbc844"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
+            "version": "==1.26.7"
+        }
+    },
     "develop": {
         "attrs": {
             "hashes": [
@@ -41,6 +159,25 @@
             "markers": "python_version >= '3.6'",
             "version": "==4.1.0"
         },
+        "boto3-stubs": {
+            "extras": [
+                "cloudformation"
+            ],
+            "hashes": [
+                "sha256:64cdcbd3fdfa673486cf7320dc0f7981ccd3ff296d942eecd650998b8cfc9147",
+                "sha256:85fae109fd96613e2c393f43790d5c2c89487c5139f9b3de839c5c1395ef7007"
+            ],
+            "index": "pypi",
+            "version": "==1.19.2"
+        },
+        "botocore-stubs": {
+            "hashes": [
+                "sha256:2f5b3bd462883b31edf05084c58817e1f712ba36c26db1ca0a1678a369bd171c",
+                "sha256:e9b3b9c9681d05d7d5430549d793920a30f20e44691ef928cc4551b4e3edc693"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==1.22.2"
+        },
         "certifi": {
             "hashes": [
                 "sha256:78884e7c1d4b00ce3cea67b44566851c4343c120abd683433ce934a68ea58872",
@@ -294,6 +431,13 @@
             "index": "pypi",
             "version": "==0.910"
         },
+        "mypy-boto3-cloudformation": {
+            "hashes": [
+                "sha256:5c5de7db3f6032026bdee88dc241c3cd73fadf03336486f25ef6d5c06735e773",
+                "sha256:e9e6e51cfe12e618ec27d29f620720edef60f3541bf46e3259c6e31b00b890f5"
+            ],
+            "version": "==1.19.2"
+        },
         "mypy-extensions": {
             "hashes": [
                 "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d",
@@ -384,7 +528,7 @@
                 "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",
                 "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"
             ],
-            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2'",
+            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.4.7"
         },
         "pytest": {
@@ -535,7 +679,7 @@
                 "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
                 "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2'",
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==1.16.0"
         },
         "toml": {
@@ -543,7 +687,7 @@
                 "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b",
                 "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"
             ],
-            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2'",
+            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==0.10.2"
         },
         "tomli": {
@@ -569,6 +713,14 @@
             "index": "pypi",
             "version": "==3.4.2"
         },
+        "types-tabulate": {
+            "hashes": [
+                "sha256:7c28ca3b35f13eedefdc2cddc0b73e4b3e67b353174d9294a0687c558d1d1d85",
+                "sha256:f815bdcaa227777517edea91dcac85effe03f58dd350c7e19b8019f4fb14dacc"
+            ],
+            "index": "pypi",
+            "version": "==0.8.3"
+        },
         "typing-extensions": {
             "hashes": [
                 "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e",
@@ -582,7 +734,7 @@
                 "sha256:4987c65554f7a2dbf30c18fd48778ef124af6fab771a377103da0585e2336ece",
                 "sha256:c4fdf4019605b6e5423637e01bc9fe4daef873709a7973e195ceba0a62bbc844"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4.0'",
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
             "version": "==1.26.7"
         },
         "webencodings": {
diff --git a/README.md b/README.md
index aa5e985..cded4c5 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,3 @@
-# changedifferently
-Visualises the changes described by an Amazon Web Services CloudFormation change set
+# stackdiff
+
+Visualises the changes described by an Amazon Web Services CloudFormation stack change set
diff --git a/build.sh b/build.sh
index a8d20bf..7499fd7 100755
--- a/build.sh
+++ b/build.sh
@@ -10,7 +10,7 @@ else
   version="-1.-1.-1"
 fi
 
-echo "${version}" > changedifferently/version/VERSION
+echo "${version}" > stackdiff/version/VERSION
 rm -rf dist
 python setup.py bdist_wheel
 rm -rf build
diff --git a/lint.sh b/lint.sh
index 2551550..f7dc21a 100755
--- a/lint.sh
+++ b/lint.sh
@@ -18,5 +18,5 @@ else
 fi
 
 flake8 .
-mypy changedifferently
+mypy stackdiff
 mypy tests
diff --git a/pyproject.toml b/pyproject.toml
index 1e4a455..f2a698e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,6 +6,6 @@ profile = 'black'
 skip = '.venv'
 
 [tool.pytest.ini_options]
-addopts = '--cov=changedifferently --cov-branch --cov-report=html --cov-report=term-missing:skip-covered --cov-report=xml --no-cov-on-fail'
+addopts = '--cov=stackdiff --cov-branch --cov-report=html --cov-report=term-missing:skip-covered --cov-report=xml --no-cov-on-fail'
 log_cli = 1
 testpaths = 'tests'
diff --git a/setup.py b/setup.py
index 068b9c3..b92761c 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 from setuptools import setup  # pyright: reportMissingTypeStubs=false
 
-from changedifferently.version import get_version
+from stackdiff.version import get_version
 
 readme_path = Path(__file__).parent / "README.md"
 
@@ -36,21 +36,26 @@
     author="Cariad Eccleston",
     author_email="cariad@cariad.earth",
     classifiers=classifiers,
-    description="Visualises the changes described by an Amazon Web Services CloudFormation change set",
+    description="Visualises the changes described by an Amazon Web Services CloudFormation stack change set",
+    entry_points={
+        "console_scripts": [
+            "stackdiff=stackdiff.__main__:cli_entry",
+        ],
+    },
     include_package_data=True,
     license="MIT",
     long_description=long_description,
     long_description_content_type="text/markdown",
-    name="changedifferently",
+    name="stackdiff",
     packages=[
-        "changedifferently",
-        "changedifferently.version",
+        "stackdiff",
+        "stackdiff.version",
     ],
     package_data={
-        "changedifferently": ["py.typed"],
-        "changedifferently.version": ["py.typed"],
+        "stackdiff": ["py.typed"],
+        "stackdiff.version": ["py.typed"],
     },
     python_requires=">=3.8",
-    url="https://github.com/cariad/changedifferently",
+    url="https://github.com/cariad/stackdiff",
     version=version,
 )
diff --git a/changedifferently/__init__.py b/stackdiff/__init__.py
similarity index 100%
rename from changedifferently/__init__.py
rename to stackdiff/__init__.py
diff --git a/stackdiff/__main__.py b/stackdiff/__main__.py
new file mode 100644
index 0000000..60ab218
--- /dev/null
+++ b/stackdiff/__main__.py
@@ -0,0 +1,32 @@
+from argparse import ArgumentParser
+from sys import stdout
+
+from boto3.session import Session
+
+from stackdiff.stack_diff import StackDiff
+from stackdiff.version import get_version
+
+
+def cli_entry() -> None:
+    parser = ArgumentParser(
+        description="Visualises the changes described by an Amazon Web Services CloudFormation stack change set.",
+        epilog="Made with love by Cariad Eccleston: https://github.com/cariad/stackdiff",
+    )
+
+    parser.add_argument("--change", help="change set ARN, ID or name")
+    parser.add_argument("--stack", help="stack ARN, ID or name")
+    parser.add_argument("--version", action="store_true", help="print the version")
+
+    args = parser.parse_args()
+
+    if args.version:
+        print(get_version())
+        exit(0)
+
+    cs = StackDiff(change=args.change, session=Session(), stack=args.stack)
+    cs.render_differences(stdout)
+    cs.render_changes(stdout)
+
+
+if __name__ == "__main__":
+    cli_entry()
diff --git a/changedifferently/py.typed b/stackdiff/py.typed
similarity index 100%
rename from changedifferently/py.typed
rename to stackdiff/py.typed
diff --git a/stackdiff/stack_diff.py b/stackdiff/stack_diff.py
new file mode 100644
index 0000000..ce2f1e5
--- /dev/null
+++ b/stackdiff/stack_diff.py
@@ -0,0 +1,104 @@
+from functools import cached_property
+from typing import IO, Optional
+
+from ansiscape import green, heavy, yellow
+from boto3.session import Session
+from differently import render
+from tabulate import tabulate
+
+
+class StackDiff:
+    """
+    Visualises the changes described by an Amazon Web Services CloudFormation
+    change set.
+
+    Arguments:
+        change:  ARN, ID or name of the CloudFormation change set to visualise
+        session: boto3 session (defaults to a new session)
+        stack:   ARN, ID or name of the change set's CloudFormation stack
+    """
+
+    def __init__(
+        self,
+        change: str,
+        stack: str,
+        session: Optional[Session] = None,
+    ) -> None:
+
+        session = session or Session()
+
+        self.change = change
+        self.client = session.client(
+            "cloudformation"
+        )  # pyright: reportUnknownMemberType=false
+        self.stack = stack
+
+    @cached_property
+    def change_template(self) -> str:
+        response = self.client.get_template(
+            ChangeSetName=self.change,
+            StackName=self.stack,
+            TemplateStage="Original",
+        )
+        return response.get("TemplateBody", "")
+
+    def render_changes(self, writer: IO[str]) -> None:
+        """Renders a visualisation of the changes to `writer`."""
+
+        response = self.client.describe_change_set(
+            ChangeSetName=self.change,
+            StackName=self.stack,
+        )
+
+        rows = [
+            [
+                heavy("Logical ID").encoded,
+                heavy("Physical ID").encoded,
+                heavy("Resource Type").encoded,
+                heavy("Action").encoded,
+            ]
+        ]
+
+        for change in response["Changes"]:
+            rc = change.get("ResourceChange", None)
+            if not rc:
+                continue
+
+            if rc["Action"] == "Add":
+                color = green
+            else:
+                color = yellow
+
+            replacement = rc.get("Replacement", "False").lower()
+            will_replace = replacement == "true"
+
+            action: str = rc["Action"]
+
+            if action == "Modify":
+                action = "Replace ⚠️" if will_replace else "Update"
+
+            rows.append(
+                [
+                    color(rc["LogicalResourceId"]).encoded,
+                    color(rc["PhysicalResourceId"]).encoded,
+                    color(rc["ResourceType"]).encoded,
+                    color(action).encoded,
+                ]
+            )
+
+        t = tabulate(rows, headers="firstrow", tablefmt="plain")
+
+        writer.write("\n" + t + "\n\n")
+
+    def render_differences(self, writer: IO[str]) -> None:
+        """Renders a visualisation of the differences to `writer`."""
+
+        render(self.stack_template, self.change_template, writer)
+
+    @cached_property
+    def stack_template(self) -> str:
+        response = self.client.get_template(
+            StackName=self.stack,
+            TemplateStage="Original",
+        )
+        return response.get("TemplateBody", "")
diff --git a/changedifferently/version/VERSION b/stackdiff/version/VERSION
similarity index 100%
rename from changedifferently/version/VERSION
rename to stackdiff/version/VERSION
diff --git a/changedifferently/version/__init__.py b/stackdiff/version/__init__.py
similarity index 100%
rename from changedifferently/version/__init__.py
rename to stackdiff/version/__init__.py
diff --git a/changedifferently/version/py.typed b/stackdiff/version/py.typed
similarity index 100%
rename from changedifferently/version/py.typed
rename to stackdiff/version/py.typed
diff --git a/tests/test_version.py b/tests/test_version.py
index 12b804e..c6b160b 100644
--- a/tests/test_version.py
+++ b/tests/test_version.py
@@ -1,4 +1,4 @@
-from changedifferently.version import get_version
+from stackdiff.version import get_version
 
 
 def test_get_version() -> None: