diff --git a/docs/packaging.md b/docs/packaging.md
new file mode 100644
index 0000000..03a095c
--- /dev/null
+++ b/docs/packaging.md
@@ -0,0 +1,38 @@
+# Packaging SeedPass
+
+This guide describes how to build platform-native packages for SeedPass using [BeeWare Briefcase](https://briefcase.readthedocs.io/).
+
+## Prerequisites
+
+* Python 3.12 with development headers (`python3-dev` on Debian/Ubuntu).
+* Briefcase installed in your virtual environment:
+
+```bash
+pip install briefcase
+```
+
+## Linux
+
+The helper script in `packaging/build-linux.sh` performs `briefcase create`, `build`, and `package` for the current project.
+
+```bash
+./packaging/build-linux.sh
+```
+
+Briefcase outputs its build artifacts in `build/seedpass-gui/ubuntu/noble/`. These files can be bundled in container formats such as Flatpak or Snap. Example manifests are included:
+
+* `packaging/flatpak/seedpass.yml` targets the `org.gnome.Platform` runtime and copies the Briefcase build into the Flatpak bundle.
+* `packaging/snapcraft.yaml` stages the Briefcase build and lists GTK libraries in `stage-packages` so the Snap includes its GUI dependencies.
+
+## macOS and Windows
+
+Scripts are provided to document the commands expected on each platform. They must be run on their respective operating systems:
+
+* `packaging/build-macos.sh`
+* `packaging/build-windows.ps1`
+
+Each script runs Briefcase's `create`, `build`, and `package` steps with `--no-input`.
+
+## Reproducible Releases
+
+The `packaging/` directory contains the scripts and manifests needed to regenerate desktop packages. Invoke the appropriate script on the target OS, then use the supplied Flatpak or Snap manifest to bundle additional dependencies for Linux.
diff --git a/packaging/build-linux.sh b/packaging/build-linux.sh
new file mode 100755
index 0000000..e496261
--- /dev/null
+++ b/packaging/build-linux.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+set -e
+briefcase create linux --no-input
+briefcase build linux --no-input
+briefcase package linux --no-input
diff --git a/packaging/build-macos.sh b/packaging/build-macos.sh
new file mode 100755
index 0000000..df2bbc0
--- /dev/null
+++ b/packaging/build-macos.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+set -e
+briefcase create macos --no-input
+briefcase build macos --no-input
+briefcase package macos --no-input
diff --git a/packaging/build-windows.ps1 b/packaging/build-windows.ps1
new file mode 100644
index 0000000..3defff0
--- /dev/null
+++ b/packaging/build-windows.ps1
@@ -0,0 +1,3 @@
+briefcase create windows --no-input
+briefcase build windows --no-input
+briefcase package windows --no-input
diff --git a/packaging/flatpak/seedpass.yml b/packaging/flatpak/seedpass.yml
new file mode 100644
index 0000000..b49d3ec
--- /dev/null
+++ b/packaging/flatpak/seedpass.yml
@@ -0,0 +1,18 @@
+app-id: io.seedpass.SeedPass
+runtime: org.gnome.Platform
+runtime-version: '46'
+sdk: org.gnome.Sdk
+command: seedpass-gui
+modules:
+  - name: seedpass
+    buildsystem: simple
+    build-commands:
+      - mkdir -p /app/bin
+      - cp -r ../../build/seedpass-gui/ubuntu/noble/* /app/bin/
+    sources:
+      - type: dir
+        path: ../../
+finish-args:
+  - --share=network
+  - --socket=fallback-x11
+  - --socket=wayland
diff --git a/packaging/snapcraft.yaml b/packaging/snapcraft.yaml
new file mode 100644
index 0000000..a965aae
--- /dev/null
+++ b/packaging/snapcraft.yaml
@@ -0,0 +1,22 @@
+name: seedpass
+base: core22
+version: '0.1.0'
+summary: Deterministic password manager
+description: |
+  SeedPass deterministically generates passwords using BIP-39 seeds.
+grade: devel
+confinement: strict
+apps:
+  seedpass-gui:
+    command: bin/seedpass-gui
+    plugs:
+      - network
+      - x11
+parts:
+  seedpass:
+    plugin: dump
+    source: build/seedpass-gui/ubuntu/noble/app
+    stage-packages:
+      - libgtk-3-0
+      - libglib2.0-0
+      - libgdk-pixbuf2.0-0
diff --git a/pyproject.toml b/pyproject.toml
index 6c5841a..6379d99 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,10 +60,15 @@ python_version = "3.11"
 strict = true
 mypy_path = "src"
 
+[tool.briefcase]
+project_name = "SeedPass"
+bundle = "io.seedpass"
+version = "0.1.0"
+
 [tool.briefcase.app.seedpass-gui]
 formal-name = "SeedPass"
 description = "Deterministic password manager with a BeeWare GUI"
-sources = ["src"]
+sources = ["src/seedpass_gui"]
 requires = [
     "toga-core>=0.5.2",
     "colorama>=0.4.6",
@@ -94,6 +99,7 @@ requires = [
     "argon2-cffi",
 ]
 icon = "logo/png/SeedPass-Logo-24.png"
+license = { file = "LICENSE" }
 
 [build-system]
 requires = ["poetry-core"]