diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 1b7aa658..7f443954 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
-        operating-system: [ubuntu-latest, windows-latest]
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
     - name: Checkout
       uses: actions/checkout@v2
@@ -24,7 +24,7 @@ jobs:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
-        operating-system: [ubuntu-latest, windows-latest]
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
     - name: Checkout
       uses: actions/checkout@v2
diff --git a/README.md b/README.md
index 2cd5af64..e466d8b4 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,8 @@ steps:
 - uses: actions/checkout@v2
 - uses: actions/setup-java@v1
   with:
-    java-version: '9.0.4' # The JDK version to make available on the path.
+    java-version: '11' # The JDK version to make available on the path.
+    vendor: adoptopenjdk # (adoptopenjdk or zulu) - defaults to adoptopenjdk
     java-package: jdk # (jre, jdk, or jdk+fx) - defaults to jdk
     architecture: x64 # (x64 or x86) - defaults to x64
 - run: java -cp java HelloWorldApp
@@ -30,13 +31,13 @@ Examples of version specifications that the java-version parameter will accept:
 
   e.g. ```6, 7, 8, 9, 10, 11, 12, 13, ...```
 
-- A semver Java version specification
+- A semver Java version specification (Zulu only)
 
   e.g. ```8.0.232, 7.0.181, 11.0.4```
 
   e.g. ```8.0.x, >11.0.3, >=13.0.1, <8.0.212```
-
-- An early access (EA) Java version
+  
+- An early access (EA) Java version (Zulu only)
 
   e.g. ```14-ea, 15-ea```
 
@@ -46,7 +47,7 @@ Examples of version specifications that the java-version parameter will accept:
 
   Note that, per semver rules, EA builds will be matched by explicit EA version specifications.
 
-- 1.x syntax
+- 1.x syntax (Zulu only)
 
     e.g. ```1.8``` (same as ```8```)
 
diff --git a/__tests__/installer.test.ts b/__tests__/installer.test.ts
index ff2d61b5..ea970567 100644
--- a/__tests__/installer.test.ts
+++ b/__tests__/installer.test.ts
@@ -13,12 +13,15 @@ import * as installer from '../src/installer';
 
 let javaFilePath = '';
 let javaUrl = '';
+let additionalPath = '';
 if (process.platform === 'win32') {
   javaFilePath = path.join(javaDir, 'java_win.zip');
   javaUrl =
     'https://download.java.net/java/GA/jdk12/33/GPL/openjdk-12_windows-x64_bin.zip';
 } else if (process.platform === 'darwin') {
   javaFilePath = path.join(javaDir, 'java_mac.tar.gz');
+  // macOS tarballs are in bundle format
+  additionalPath = '/Contents/Home';
   javaUrl =
     'https://download.java.net/java/GA/jdk12/33/GPL/openjdk-12_osx-x64_bin.tar.gz';
 } else {
@@ -51,34 +54,57 @@ describe('installer tests', () => {
     }
   }, 100000);
 
-  it('Installs version of Java from jdkFile if no matching version is installed', async () => {
-    await installer.getJava('12', 'x64', javaFilePath, 'jdk');
+  it('Installs version of Java from jdkFile if no matching version is installed AdoptOpenJDK', async () => {
+    await installer.getJava('12', 'adoptopenjdk', 'x64', javaFilePath, 'jdk');
     const JavaDir = path.join(toolDir, 'jdk', '12.0.0', 'x64');
-
     expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
-    expect(fs.existsSync(path.join(JavaDir, 'bin'))).toBe(true);
+    expect(fs.existsSync(path.join(JavaDir, additionalPath, 'bin'))).toBe(true);
   }, 100000);
 
-  it('Throws if invalid directory to jdk', async () => {
+  it('Installs version of Java from jdkFile if no matching version is installed Zulu', async () => {
+    await installer.getJava('12', 'zulu', 'x64', javaFilePath, 'jdk');
+    const JavaDir = path.join(toolDir, 'jdk', '12.0.0', 'x64');
+    expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
+    expect(fs.existsSync(path.join(JavaDir, additionalPath, 'bin'))).toBe(true);
+  }, 100000);
+
+  it('Throws if invalid directory to jdk AdoptOpenJDK', async () => {
     let thrown = false;
     try {
-      await installer.getJava('1000', 'x64', 'bad path', 'jdk');
+      await installer.getJava('1000', 'adoptopenjdk', 'x64', 'bad path', 'jdk');
     } catch {
       thrown = true;
     }
     expect(thrown).toBe(true);
   });
 
-  it('Downloads java if no file given', async () => {
-    await installer.getJava('8.0.102', 'x64', '', 'jdk');
-    const JavaDir = path.join(toolDir, 'jdk', '8.0.102', 'x64');
+  it('Throws if invalid directory to jdk Zulu', async () => {
+    let thrown = false;
+    try {
+      await installer.getJava('1000', 'zulu', 'x64', 'bad path', 'jdk');
+    } catch {
+      thrown = true;
+    }
+    expect(thrown).toBe(true);
+  });
 
+  it('Downloads java if no file given AdoptOpenJDK', async () => {
+    await installer.getJava('8', 'adoptopenjdk', 'x64', '', 'jdk');
+    const JavaDir = path.join(toolDir, 'jdk', '8.0.0', 'x64');
+
+    expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
+    expect(fs.existsSync(path.join(JavaDir, additionalPath, 'bin'))).toBe(true);
+  }, 100000);
+
+  it('Downloads java if no file given Zulu', async () => {
+    await installer.getJava('8.0.102', 'zulu', 'x64', '', 'jdk');
+    const JavaDir = path.join(toolDir, 'jdk', '8.0.102', 'x64');
     expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
     expect(fs.existsSync(path.join(JavaDir, 'bin'))).toBe(true);
   }, 100000);
 
   it('Downloads java with 1.x syntax', async () => {
-    await installer.getJava('1.10', 'x64', '', 'jdk');
+    await installer.getJava('1.10', 'zulu', 'x64', '', 'jdk');
     const JavaDir = path.join(toolDir, 'jdk', '10.0.2', 'x64');
 
     expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
@@ -86,15 +112,23 @@ describe('installer tests', () => {
   }, 100000);
 
   it('Downloads java with normal semver syntax', async () => {
-    await installer.getJava('9.0.x', 'x64', '', 'jdk');
+    await installer.getJava('9.0.x', 'zulu', 'x64', '', 'jdk');
     const JavaDir = path.join(toolDir, 'jdk', '9.0.7', 'x64');
 
     expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
     expect(fs.existsSync(path.join(JavaDir, 'bin'))).toBe(true);
   }, 100000);
 
-  it('Downloads java if package is jre', async () => {
-    await installer.getJava('8.0.222', 'x64', '', 'jre');
+  it('Downloads java if package is jre AdoptOpenJDK', async () => {
+    await installer.getJava('11', 'adoptopenjdk', 'x64', '', 'jre');
+    const JavaDir = path.join(toolDir, 'jre', '11.0.0', 'x64');
+
+    expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
+    expect(fs.existsSync(path.join(JavaDir, additionalPath, 'bin'))).toBe(true);
+  }, 100000);
+
+  it('Downloads java if package is jre Zulu', async () => {
+    await installer.getJava('8.0.222', 'zulu', 'x64', '', 'jre');
     const JavaDir = path.join(toolDir, 'jre', '8.0.222', 'x64');
 
     expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
@@ -102,17 +136,27 @@ describe('installer tests', () => {
   }, 100000);
 
   it('Downloads java if package is jdk+fx', async () => {
-    await installer.getJava('8.0.222', 'x64', '', 'jdk+fx');
+    await installer.getJava('8.0.222', 'zulu', 'x64', '', 'jdk+fx');
     const JavaDir = path.join(toolDir, 'jdk+fx', '8.0.222', 'x64');
 
     expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
     expect(fs.existsSync(path.join(JavaDir, 'bin'))).toBe(true);
   }, 100000);
 
-  it('Throws if invalid java package is specified', async () => {
+  it('Throws if invalid java package is specified AdoptOpenJDK', async () => {
     let thrown = false;
     try {
-      await installer.getJava('8.0.222', 'x64', '', 'bad jdk');
+      await installer.getJava('8', 'adoptopenjdk', 'x64', '', 'bad jdk');
+    } catch {
+      thrown = true;
+    }
+    expect(thrown).toBe(true);
+  });
+
+  it('Throws if invalid java package is specified Zulu', async () => {
+    let thrown = false;
+    try {
+      await installer.getJava('8.0.222', 'zulu', 'x64', '', 'bad jdk');
     } catch {
       thrown = true;
     }
@@ -122,7 +166,7 @@ describe('installer tests', () => {
   it('Throws if invalid directory to jdk', async () => {
     let thrown = false;
     try {
-      await installer.getJava('1000', 'x64', 'bad path', 'jdk');
+      await installer.getJava('1000', 'zulu', 'x64', 'bad path', 'jdk');
     } catch {
       thrown = true;
     }
@@ -136,6 +180,7 @@ describe('installer tests', () => {
     // This will throw if it doesn't find it in the cache (because no such version exists)
     await installer.getJava(
       '250',
+      'zulu',
       'x64',
       'path shouldnt matter, found in cache',
       'jdk'
@@ -149,7 +194,7 @@ describe('installer tests', () => {
     let thrown = false;
     try {
       // This will throw if it doesn't find it in the cache (because no such version exists)
-      await installer.getJava('251', 'x64', 'bad path', 'jdk');
+      await installer.getJava('251', 'zulu', 'x64', 'bad path', 'jdk');
     } catch {
       thrown = true;
     }
diff --git a/action.yml b/action.yml
index 74572687..c11bab7d 100644
--- a/action.yml
+++ b/action.yml
@@ -9,6 +9,11 @@ inputs:
        Early access versions can be specified in the form of e.g. 14-ea,
        14.0.0-ea, or 14.0.0-ea.28'
     required: true
+  vendor:
+    description: 'The vendor to fetch the binary from (adoptopenjdk, zulu).
+    Defaults to adoptopenjdk'
+    required: false
+    default: 'adoptopenjdk'
   java-package:
     description: 'The package type (jre, jdk, jdk+fx)'
     required: false
diff --git a/src/installer.ts b/src/installer.ts
index 88a8ff18..75ec8c11 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -13,6 +13,7 @@ const IS_WINDOWS = util.isWindows();
 
 export async function getJava(
   version: string,
+  vendor: string,
   arch: string,
   jdkFile: string,
   javaPackage: string
@@ -23,31 +24,26 @@ export async function getJava(
     core.debug(`Tool found in cache ${toolPath}`);
   } else {
     let compressedFileExtension = '';
+
     if (!jdkFile) {
-      core.debug('Downloading JDK from Azul');
-      const http = new httpm.HttpClient('setup-java', undefined, {
-        allowRetries: true,
-        maxRetries: 3
-      });
-      const url = 'https://static.azul.com/zulu/bin/';
-      const response = await http.get(url);
-      const statusCode = response.message.statusCode || 0;
-      if (statusCode < 200 || statusCode > 299) {
-        let body = '';
-        try {
-          body = await response.readBody();
-        } catch (err) {
-          core.debug(`Unable to read body: ${err.message}`);
+      async function setupVendor(vendor: string) {
+        switch (vendor) {
+          case 'adoptopenjdk':
+            [jdkFile, version] = await getJavaAdoptOpenJDK(
+              version,
+              javaPackage,
+              arch
+            );
+            break;
+          case 'zulu':
+            [jdkFile, version] = await getJavaZulu(version, javaPackage);
+            break;
         }
-        const message = `Unexpected HTTP status code '${response.message.statusCode}' when retrieving versions from '${url}'. ${body}`.trim();
-        throw new Error(message);
+        return [jdkFile, version];
       }
 
-      const contents = await response.readBody();
-      const refs = contents.match(/<a href.*\">/gi) || [];
-      const downloadInfo = getDownloadInfo(refs, version, javaPackage);
-      jdkFile = await tc.downloadTool(downloadInfo.url);
-      version = downloadInfo.version;
+      [jdkFile, version] = await setupVendor(vendor);
+
       compressedFileExtension = IS_WINDOWS ? '.zip' : '.tar.gz';
     } else {
       core.debug('Retrieving Jdk from local path');
@@ -71,6 +67,8 @@ export async function getJava(
     );
   }
 
+  if (process.platform === 'darwin') toolPath += '/Contents/Home';
+
   let extendedJavaHome = 'JAVA_HOME_' + version + '_' + arch;
   core.exportVariable(extendedJavaHome, toolPath); //TODO: remove for v2
   // For portability reasons environment variables should only consist of
@@ -85,6 +83,52 @@ export async function getJava(
   core.setOutput('version', version);
 }
 
+async function getJavaZulu(version: string, javaPackage: string) {
+  core.debug('Downloading JDK from Azul');
+  const http = new httpm.HttpClient('setup-java', undefined, {
+    allowRetries: true,
+    maxRetries: 3
+  });
+
+  const url = 'https://static.azul.com/zulu/bin/';
+
+  const response = await http.get(url);
+  const statusCode = response.message.statusCode || 0;
+  if (statusCode < 200 || statusCode > 299) {
+    let body = '';
+    try {
+      body = await response.readBody();
+    } catch (err) {
+      core.debug(`Unable to read body: ${err.message}`);
+    }
+    const message = `Unexpected HTTP status code '${response.message.statusCode}' when retrieving versions from '${url}'. ${body}`.trim();
+    throw new Error(message);
+  }
+
+  const contents = await response.readBody();
+  const refs = contents.match(/<a href.*\">/gi) || [];
+  const downloadInfo = getDownloadInfo(refs, version, javaPackage);
+  const jdkFile = await tc.downloadTool(downloadInfo.url);
+
+  version = downloadInfo.version;
+  return [jdkFile, version];
+}
+
+async function getJavaAdoptOpenJDK(
+  version: string,
+  javaPackage: string,
+  arch: string
+) {
+  core.debug('Downloading JDK from AdoptOpenJDK');
+
+  const jdkFile = await tc.downloadTool(
+    `https://api.adoptopenjdk.net/v3/binary/latest/${normalizeAdoptOpenJDK(
+      version
+    )}/ga/${OS}/${arch}/${javaPackage}/hotspot/normal/adoptopenjdk`
+  );
+  return [jdkFile, version];
+}
+
 function getCacheVersionString(version: string) {
   const versionArray = version.split('.');
   const major = versionArray[0];
@@ -290,3 +334,8 @@ function normalizeVersion(version: string): string {
 
   return version;
 }
+
+function normalizeAdoptOpenJDK(version: string): string {
+  if (version == '1.8') return '8';
+  return version;
+}
diff --git a/src/setup-java.ts b/src/setup-java.ts
index db169f29..49fea11a 100644
--- a/src/setup-java.ts
+++ b/src/setup-java.ts
@@ -11,13 +11,14 @@ async function run() {
     if (!version) {
       version = core.getInput(constants.INPUT_JAVA_VERSION, {required: true});
     }
+    const vendor = core.getInput('vendor', {required: true});
     const arch = core.getInput(constants.INPUT_ARCHITECTURE, {required: true});
     const javaPackage = core.getInput(constants.INPUT_JAVA_PACKAGE, {
       required: true
     });
     const jdkFile = core.getInput(constants.INPUT_JDK_FILE, {required: false});
 
-    await installer.getJava(version, arch, jdkFile, javaPackage);
+    await installer.getJava(version, vendor, arch, jdkFile, javaPackage);
 
     const matchersPath = path.join(__dirname, '..', '..', '.github');
     core.info(`##[add-matcher]${path.join(matchersPath, 'java.json')}`);
diff --git a/src/util.ts b/src/util.ts
index 671727c4..b16a111f 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -12,6 +12,7 @@ export function getTempDir() {
     } else {
       if (process.platform === 'darwin') {
         baseLocation = '/Users';
+        toolPath += '/Contents/Home';
       } else {
         baseLocation = '/home';
       }