diff --git a/.github/workflows/zstd.yml b/.github/workflows/zstd.yml
new file mode 100644
index 000000000..5d606052f
--- /dev/null
+++ b/.github/workflows/zstd.yml
@@ -0,0 +1,63 @@
+name: zstd
+
+on: [pull_request, workflow_dispatch]
+
+jobs:
+  alpine-musl:
+    if: ${{ vars.CURRENT_TOOL == github.workflow }}
+    uses: ./.github/workflows/build-alpine.yml
+    with:
+      workflow: ${{ github.workflow }}
+      version: 3.18.4
+
+  test-alpine:
+    needs: alpine-musl
+    uses: ./.github/workflows/test-alpine.yml
+    with:
+      workflow: ${{ github.workflow }}
+      artifact: build-musl
+
+  test-ubuntu:
+    needs: alpine-musl
+    uses: ./.github/workflows/test-ubuntu.yml
+    with:
+      workflow: ${{ github.workflow }}
+      artifact: build-musl
+
+  windows-mingw:
+    if: ${{ vars.CURRENT_TOOL == github.workflow }}
+    uses: ./.github/workflows/build-windows-msys2.yml
+    with:
+      workflow: ${{ github.workflow }}
+      msys2_install: make mingw-w64-x86_64-gcc
+      toolset: mingw
+
+  test-windows:
+    needs: windows-mingw
+    uses: ./.github/workflows/test-windows.yml
+    with:
+      workflow: ${{ github.workflow }}
+      artifact: build-mingw
+
+  test-nanoserver:
+    needs: windows-mingw
+    uses: ./.github/workflows/test-nanoserver.yml
+    with:
+      workflow: ${{ github.workflow }}
+      artifact: build-mingw
+
+  release:
+    needs: [test-alpine,
+            test-ubuntu,
+            test-windows,
+            test-nanoserver]
+    uses: ./.github/workflows/release.yml
+    with:
+      workflow: ${{ github.workflow }}
+      tool_version: '1.5.5'
+      prepare_body: |
+        bsdtar -Oxf ./build-musl/build-musl.tar.gz build-musl.md >> body.md
+        bsdtar -Oxf ./build-mingw/build-mingw.tar.gz build-mingw.md >> body.md
+      artifacts: ./build-musl/build-musl.tar.gz,./build-mingw/build-mingw.tar.gz
+    secrets:
+      token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/README.md b/README.md
index 1ca51fdf2..ea5d4902e 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@
 | [![GitHub release (by tag)](https://img.shields.io/github/downloads/hemnstill/StandaloneTools/ansible-8.3.0/total?label=⭳%20ansible-8.3.0-core-2.15.3)](https://github.com/hemnstill/StandaloneTools/releases/tag/ansible-8.3.0)                   | [![GitHub Repo stars](https://img.shields.io/github/stars/ansible/ansible?style=social&label=ansible)](https://github.com/ansible/ansible) [![PyPI](https://img.shields.io/pypi/v/ansible)](https://pypi.org/project/ansible/) [![GitHub tag (latest SemVer)](https://img.shields.io/github/v/tag/ansible/ansible)](https://docs.ansible.com/ansible/devel/reference_appendices/release_and_maintenance.html)                                                                                                                                                                                                              |
 | [![GitHub release (by tag)](https://img.shields.io/github/downloads/hemnstill/StandaloneTools/bsdtar-3.7.1/total?label=⭳%20bsdtar-3.7.1)](https://github.com/hemnstill/StandaloneTools/releases/tag/bsdtar-3.7.1)                                  | [![GitHub Repo stars](https://img.shields.io/github/stars/libarchive/libarchive?style=social&label=libarchive)](https://github.com/libarchive/libarchive) [![GitHub release (latest by date including pre-releases)](https://img.shields.io/github/v/release/libarchive/libarchive)](https://github.com/libarchive/libarchive/releases/latest)                                                                                                                                                                                                                                                                             |
 | [![GitHub release (by tag)](https://img.shields.io/github/downloads/hemnstill/StandaloneTools/7-Zip-23.01/total?label=⭳%207-Zip-23.01)](https://github.com/hemnstill/StandaloneTools/releases/tag/7-Zip-23.01)                                     | [![SourceForge Downloads](https://img.shields.io/sourceforge/dm/sevenzip?style=social&label=7-Zip)](https://sourceforge.net/projects/sevenzip/)                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
+| [![GitHub release (by tag)](https://img.shields.io/github/downloads/hemnstill/StandaloneTools/zstd-1.5.5/total?label=⭳%20zstd-1.5.5)](https://github.com/hemnstill/StandaloneTools/releases/tag/zstd-1.5.5)                                  | [![GitHub Repo stars](https://img.shields.io/github/stars/facebook/zstd?style=social&label=zstd)](https://github.com/facebook/zstd) [![GitHub release (latest by date including pre-releases)](https://img.shields.io/github/v/release/facebook/zstd)](https://github.com/facebook/zstd/releases/latest)                                                                                                                                                                                                                                                                                                                   |
 | [![GitHub release (by tag)](https://img.shields.io/github/downloads/hemnstill/StandaloneTools/pg_dump-15.1/total?label=⭳%20pg_dump-15.1)](https://github.com/hemnstill/StandaloneTools/releases/tag/pg_dump-15.1)                                  | [![GitHub Repo stars](https://img.shields.io/github/stars/postgres/postgres?style=social&label=postgres)](https://github.com/postgres/postgres) [![GitHub tag (latest SemVer)](https://img.shields.io/github/v/tag/postgres/postgres)](https://www.postgresql.org/docs/current/index.html)                                                                                                                                                                                                                                                                                                                                 |
 | [![GitHub release (by tag)](https://img.shields.io/github/downloads/hemnstill/StandaloneTools/mysql-8.0.33/total?label=⭳%20mysql-8.0.33)](https://github.com/hemnstill/StandaloneTools/releases/tag/mysql-8.0.33)                                  | [![GitHub Repo stars](https://img.shields.io/github/stars/mysql/mysql-server?style=social&label=mysql-server)](https://github.com/mysql/mysql-server) [![GitHub tag (latest SemVer)](https://img.shields.io/github/v/tag/mysql/mysql-server)](https://dev.mysql.com/doc/relnotes/mysql/en/)                                                                                                                                                                                                                                                                                                                                |
 | [![GitHub release (by tag)](https://img.shields.io/github/downloads/hemnstill/StandaloneTools/redis-7.0.13/total?label=⭳%20redis-7.0.13)](https://github.com/hemnstill/StandaloneTools/releases/tag/redis-7.0.13)                                  | [![GitHub Repo stars](https://img.shields.io/github/stars/redis/redis?style=social&label=redis)](https://github.com/redis/redis) [![GitHub tag (latest SemVer)](https://img.shields.io/github/v/tag/redis/redis)](https://redis.io/download/)                                                                                                                                                                                                                                                                                                                                                                              |
diff --git a/zstd/build_mingw.sh b/zstd/build_mingw.sh
new file mode 100755
index 000000000..786b5f2e0
--- /dev/null
+++ b/zstd/build_mingw.sh
@@ -0,0 +1,53 @@
+#!/bin/bash
+dp0="$(realpath "$(dirname "$0")")"
+set -e
+
+tool_name="zstd"
+tool_version="1.5.5"
+tool_zlib_version="1.3"
+self_toolset_name="build-mingw"
+
+download_url="https://github.com/facebook/zstd/archive/refs/tags/v$tool_version.tar.gz"
+echo "::group::prepare sources $download_url"
+
+mkdir -p "$dp0/release/build" && cd "$dp0/release"
+
+"$dp0/../.tools/download_bsdtar.sh"
+bsdtar="$dp0/release/bsdtar"
+
+wget "$download_url" -O "tool-$tool_version.tar.gz"
+"$bsdtar" -xf "tool-$tool_version.tar.gz"
+
+echo "::endgroup::"
+
+echo "::group::build"
+
+download_url_zlib="https://github.com/madler/zlib/archive/refs/tags/v$tool_zlib_version.tar.gz"
+wget "$download_url_zlib" -O "zlib_tool-$tool_zlib_version.tar.gz"
+"$bsdtar" -xf "zlib_tool-$tool_zlib_version.tar.gz"
+
+make -C "zlib-$tool_zlib_version" -f win32/Makefile.gcc libz.a
+
+cd "$dp0/release/$tool_name-$tool_version"
+export CPPFLAGS=-I"$dp0/release/zlib-$tool_zlib_version"
+export LDFLAGS="$dp0/release/zlib-$tool_zlib_version/libz.a"
+make -j allzstd MOREFLAGS=-static V=1
+
+echo "::endgroup::"
+
+cp -f "./programs/$tool_name.exe" "$dp0/release/build/"
+
+cd "$dp0/release/build"
+
+{ printf '### %s
+SHA-256: %s
+%s
+
+
+%s
+' "$self_toolset_name.tar.gz" "$(sha256sum $tool_name)" "$download_url_zlib" "$download_url"
+} > "$self_toolset_name.md"
+
+cat "$self_toolset_name.md"
+
+tar -czvf "../$self_toolset_name.tar.gz" .
diff --git a/zstd/build_musl.sh b/zstd/build_musl.sh
new file mode 100755
index 000000000..dc8545abd
--- /dev/null
+++ b/zstd/build_musl.sh
@@ -0,0 +1,49 @@
+#!/bin/bash
+dp0="$(realpath "$(dirname "$0")")"
+set -e
+
+echo "::group::install deps"
+
+apk update
+apk add --no-cache alpine-sdk cmake zlib-dev zlib-static
+
+echo "::endgroup::"
+
+tool_name="zstd"
+tool_version="1.5.5"
+self_toolset_name="build-musl"
+
+download_url="https://github.com/facebook/zstd/archive/refs/tags/v$tool_version.tar.gz"
+echo "::group::prepare sources $download_url"
+
+mkdir -p "$dp0/release/build" && cd "$dp0/release"
+wget "$download_url" -O "tool-$tool_version.tar.gz"
+tar -xf "tool-$tool_version.tar.gz" && cd "$tool_name-$tool_version"
+
+echo "::endgroup::"
+
+echo "::group::build"
+
+cmake build/cmake -DZSTD_BUILD_STATIC=ON -DZSTD_USE_STATIC_RUNTIME=ON -DZSTD_BUILD_TESTS=OFF -DCMAKE_EXE_LINKER_FLAGS="-static"
+cmake --build .
+
+echo "::endgroup::"
+
+cp -f "./programs/$tool_name" "$dp0/release/build/"
+
+cd "$dp0/release/build"
+
+strip "$tool_name"
+
+{ printf '%s
+
+### %s
+SHA-256: %s
+
+%s
+' "$("./$tool_name" --version)" "$self_toolset_name.tar.gz" "$(sha256sum $tool_name)" "$(apk info zlib-static --webpage)"
+} > "$self_toolset_name.md"
+
+cat "$self_toolset_name.md"
+
+tar -czvf "../$self_toolset_name.tar.gz" .
diff --git a/zstd/test_linux.sh b/zstd/test_linux.sh
new file mode 100755
index 000000000..560a0d1ee
--- /dev/null
+++ b/zstd/test_linux.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+testVersion() {
+  assertEquals "*** Zstandard CLI (64-bit) v1.5.5, by Yann Collet ***" "$(../bin/zstd --version)"
+}
+
+# Load and run shUnit2.
+source "../.tests/shunit2/shunit2"
diff --git a/zstd/test_windows.sh b/zstd/test_windows.sh
new file mode 100755
index 000000000..40b06c5b8
--- /dev/null
+++ b/zstd/test_windows.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+testVersion() {
+  assertEquals "*** Zstandard CLI (64-bit) v1.5.5, by Yann Collet ***" "$(../bin/zstd.exe --version)"
+}
+
+# Load and run shUnit2.
+source "../.tests/shunit2/shunit2"