diff --git a/src/constants.js b/src/constants.js
index 9ce0c25..1acf63d 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -1,12 +1,16 @@
 // NOTE: this list must be up-to-date with browsers listed in
 // test/acceptance/useragentstrings.yml
 export const BROWSER_ALIASES_MAP = {
+  AmazonBot: 'amazonbot',
   'Amazon Silk': 'amazon_silk',
   'Android Browser': 'android',
+  BaiduSpider: 'baiduspider',
   Bada: 'bada',
+  BingCrawler: 'bingcrawler',
   BlackBerry: 'blackberry',
   Chrome: 'chrome',
   Chromium: 'chromium',
+  DuckDuckBot: 'duckduckbot',
   Electron: 'electron',
   Epiphany: 'epiphany',
   Firefox: 'firefox',
@@ -14,8 +18,10 @@ export const BROWSER_ALIASES_MAP = {
   Generic: 'generic',
   'Google Search': 'google_search',
   Googlebot: 'googlebot',
+  InternetArchiveCrawler: 'internetarchivecrawler',
   'Internet Explorer': 'ie',
   'K-Meleon': 'k_meleon',
+  MetaWebCrawler: 'metawebcrawler',
   Maxthon: 'maxthon',
   'Microsoft Edge': 'edge',
   'MZ Browser': 'mz',
@@ -39,26 +45,35 @@ export const BROWSER_ALIASES_MAP = {
   Vivaldi: 'vivaldi',
   'WebOS Browser': 'webos',
   WeChat: 'wechat',
+  YahooSlurp: 'yahooslurp',
   'Yandex Browser': 'yandex',
+  YandexBot: 'yandexbot',
   Roku: 'roku',
+  PingdomBot: 'pingdombot',
 };
 
 export const BROWSER_MAP = {
+  amazonbot: 'AmazonBot',
   amazon_silk: 'Amazon Silk',
   android: 'Android Browser',
+  baiduspider: 'BaiduSpider',
   bada: 'Bada',
+  bingcrawler: 'BingCrawler',
   blackberry: 'BlackBerry',
   chrome: 'Chrome',
   chromium: 'Chromium',
+  duckduckbot: 'DuckDuckBot',
   electron: 'Electron',
   epiphany: 'Epiphany',
   firefox: 'Firefox',
   focus: 'Focus',
   generic: 'Generic',
   googlebot: 'Googlebot',
+  internetarchivecrawler: 'InternetArchiveCrawler',
   google_search: 'Google Search',
   ie: 'Internet Explorer',
   k_meleon: 'K-Meleon',
+  metawebcrawler: 'MetaWebCrawler',
   maxthon: 'Maxthon',
   edge: 'Microsoft Edge',
   mz: 'MZ Browser',
@@ -83,6 +98,9 @@ export const BROWSER_MAP = {
   webos: 'WebOS Browser',
   wechat: 'WeChat',
   yandex: 'Yandex Browser',
+  yahooslurp: 'YahooSlurp',
+  yandexbot: 'YandexBot',
+  pingdombot: 'PingdomBot',
 };
 
 export const PLATFORMS_MAP = {
diff --git a/src/parser-browsers.js b/src/parser-browsers.js
index 997d724..7edf596 100644
--- a/src/parser-browsers.js
+++ b/src/parser-browsers.js
@@ -45,6 +45,154 @@ const browsersList = [
     },
   },
 
+  /* AmazonBot */
+  {
+    test: [/amazonbot/i],
+    describe(ua) {
+      const browser = {
+        name: 'AmazonBot',
+      };
+      const version = Utils.getFirstMatch(/amazonbot\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* BingCrawler */
+  {
+    test: [/bingbot/i],
+    describe(ua) {
+      const browser = {
+        name: 'BingCrawler',
+      };
+      const version = Utils.getFirstMatch(/bingbot\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* BaiduSpider */
+  {
+    test: [/baiduspider/i],
+    describe(ua) {
+      const browser = {
+        name: 'BaiduSpider',
+      };
+      const version = Utils.getFirstMatch(/baiduspider\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* DuckDuckBot */
+  {
+    test: [/duckduckbot/i],
+    describe(ua) {
+      const browser = {
+        name: 'DuckDuckBot',
+      };
+      const version = Utils.getFirstMatch(/duckduckbot\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* InternetArchiveCrawler */
+  {
+    test: [/ia_archiver/i],
+    describe(ua) {
+      const browser = {
+        name: 'InternetArchiveCrawler',
+      };
+      const version = Utils.getFirstMatch(/ia_archiver\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* MetaWebCrawler */
+  {
+    test: [/facebookexternalhit/i, /facebookcatalog/i],
+    describe(ua) {
+      const browser = {
+        name: 'MetaWebCrawler',
+      };
+      const version = Utils.getFirstMatch(/facebookexternalhit\/(\d+(\.\d+)+)/i, ua)
+        || Utils.getFirstMatch(/facebookcatalog\/(\d+(\.\d+)+)/i, ua)
+        || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* YahooSlurp */
+  {
+    test: [/yahoo!?[\s/]*slurp/i],
+    describe() {
+      return {
+        name: 'YahooSlurp',
+      };
+    },
+  },
+
+  /* YandexBot */
+  {
+    test: [/yandexbot/i, /yandexmobilebot/i],
+    describe(ua) {
+      const browser = {
+        name: 'YandexBot',
+      };
+      const version = Utils.getFirstMatch(/yandex(?:bot|mobilebot)\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* PingdomBot */
+  {
+    test: [/pingdom/i],
+    describe(ua) {
+      const browser = {
+        name: 'PingdomBot',
+      };
+      const version = Utils.getFirstMatch(/version[_/](\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(/pingdom\.com_bot_.*?(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
   /* Opera < 13.0 */
   {
     test: [/opera/i],