diff --git a/src/parser-browsers.js b/src/parser-browsers.js
index 8d1b55b..1a3ca28 100644
--- a/src/parser-browsers.js
+++ b/src/parser-browsers.js
@@ -79,6 +79,51 @@ const browsersList = [
       return browser;
     },
   },
+  {
+    test: [/Whale/i],
+    describe(ua) {
+      const browser = {
+        name: 'NAVER Whale Browser',
+      };
+      const version = getFirstMatch(commonVersionIdentifier, ua) || getFirstMatch(/(?:whale)[\s/](\d+(?:\.\d+)+)/i, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+  {
+    test: [/MZBrowser/i],
+    describe(ua) {
+      const browser = {
+        name: 'MZ Browser',
+      };
+      const version = getFirstMatch(/(?:MZBrowser)[\s/](\d+(?:\.\d+)+)/i, ua) || getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+  {
+    test: [/focus/i],
+    describe(ua) {
+      const browser = {
+        name: 'Focus',
+      };
+      const version = getFirstMatch(/(?:focus)[\s/](\d+(?:\.\d+)+)/i, ua) || getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
   {
     test: [/coast/i],
     describe(ua) {
@@ -337,12 +382,12 @@ const browsersList = [
     },
   },
   {
-    test: [/(web|hpw)os/i],
+    test: [/(web|hpw)[o0]s/i],
     describe(ua) {
       const browser = {
         name: 'WebOS Browser',
       };
-      const version = getFirstMatch(commonVersionIdentifier, ua) || getFirstMatch(/w(?:eb)?osbrowser\/(\d+(\.?_?\d+)+)/i, ua);
+      const version = getFirstMatch(commonVersionIdentifier, ua) || getFirstMatch(/w(?:eb)?[o0]sbrowser\/(\d+(\.?_?\d+)+)/i, ua);
 
       if (version) {
         browser.version = version;
diff --git a/src/parser-os.js b/src/parser-os.js
index 8ca6446..ad94a42 100644
--- a/src/parser-os.js
+++ b/src/parser-os.js
@@ -74,13 +74,17 @@ export default [
 
   /* WebOS */
   {
-    test: [/(web|hpw)os/i],
+    test: [/(web|hpw)[o0]s/i],
     describe(ua) {
-      const version = getFirstMatch(/(?:web|hpw)os\/(\d+(\.\d+)*)/i, ua);
-      return {
+      const version = getFirstMatch(/(?:web|hpw)[o0]s\/(\d+(\.\d+)*)/i, ua);
+      const os = {
         name: 'WebOS',
-        version,
       };
+
+      if (version && version.length) {
+        os.version = version;
+      }
+      return os;
     },
   },
 
diff --git a/test/acceptance/useragentstrings.yml b/test/acceptance/useragentstrings.yml
index 66b8c81..bd58f3f 100644
--- a/test/acceptance/useragentstrings.yml
+++ b/test/acceptance/useragentstrings.yml
@@ -1848,6 +1848,16 @@
         engine: 
           name: "WebKit"
           version: "525.27.1"
+    -
+      ua: "Mozilla/5.0 (Web0S; Linux/SmartTV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36 WebAppManager"
+      spec:
+        browser:
+          name: "WebOS Browser"
+        os:
+          name: "WebOS"
+        platform: {}
+        engine:
+          name: "Blink"
   Android Browser:
     - 
       ua: "Mozilla/5.0 (Linux; U; Android 4.4.2; de-de; Nexus 7 Build/KOT49H) AppleWebKit/537.16 (KHTML, like Gecko) Version/4.0 Mobile Safari/537.16"
@@ -2348,3 +2358,46 @@
           type: "mobile"
         engine: 
           name: "Blink"
+  NAVER Whale Browser:
+    -
+      ua: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Whale/1.0.40.10 Safari/537.36"
+      spec:
+        browser:
+          name: "NAVER Whale Browser"
+          version: "1.0.40.10"
+        os:
+          name: "macOS"
+          version: "10.12.6"
+        platform:
+          type: "desktop"
+          vendor: "Apple"
+        engine:
+          name: "Blink"
+  MZ Browser:
+    -
+      ua: "Mozilla/5.0 (Linux; U; Android 6.0; zh-CN; MZ-PRO 6 Build/MRA58K) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/40.0.2214.89 MZBrowser/6.9.511-2018012510 UWS/2.11.0.33 Mobile Safari/537.36"
+      spec:
+        browser:
+          name: "MZ Browser"
+          version: "6.9.511"
+        os:
+          name: "Android"
+          version: "6.0"
+        platform:
+          type: "mobile"
+        engine:
+          name: "Blink"
+  Focus:
+    -
+      ua: "Mozilla/5.0 (Linux; Android 7.1.1) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Focus/1.2.1 Chrome/59.0.3071.125"
+      spec:
+        browser:
+          name: "Focus"
+          version: "1.2.1"
+        os:
+          name: "Android"
+          version: "7.1.1"
+        platform:
+          type: "tablet"
+        engine:
+          name: "Blink"