diff --git a/Library/Homebrew/utils/update.rb b/Library/Homebrew/utils/update.rb
index 84defcf33b..9f84ee7e58 100644
--- a/Library/Homebrew/utils/update.rb
+++ b/Library/Homebrew/utils/update.rb
@@ -2,5 +2,130 @@ require 'net/http'
 require 'json'
 
 module Utils
-  
+  class ApiParser
+    def call_api(url)
+      puts "- Calling API #{url}"
+      uri = URI(url)
+      response = Net::HTTP.get(uri)
+
+      puts "- Parsing response"
+      JSON.parse(response)
+    end
+
+    def query_repology_api(last_package_in_response = '')
+      url = 'https://repology.org/api/v1/projects/' + last_package_in_response + '?inrepo=homebrew&outdated=1'
+
+      self.call_api(url)
+    end
+
+    def parse_repology_api()
+      puts "\n-------- Query outdated packages from Repology --------"
+      page_no = 1
+      puts "\n- Paginating repology api page: #{page_no}"
+
+      outdated_packages = self.query_repology_api('')
+      last_pacakge_index = outdated_packages.size - 1
+      response_size = outdated_packages.size
+
+      while response_size > 1  do
+        page_no += 1
+        puts "\n- Paginating repology api page: #{page_no}"
+
+        last_package_in_response = outdated_packages.keys[last_pacakge_index]
+        response = self.query_repology_api("#{last_package_in_response}/")
+
+        response_size = response.size
+        outdated_packages.merge!(response)
+        last_pacakge_index = outdated_packages.size - 1
+      end
+
+      puts "\n- #{outdated_packages.size} outdated pacakges identified by repology"
+      outdated_packages
+    end
+  end
+
+  def query_homebrew
+    puts "\n-------- Get Homebrew Formulas --------"
+    self.call_api('https://formulae.brew.sh/api/formula.json')
+  end
+
+  def parse_homebrew_formulas()
+    formulas = self.query_homebrew()
+    parsed_homebrew_formulas = {}
+
+    formulas.each do |formula|
+      parsed_homebrew_formulas[formula['name']] = {
+        "fullname" => formula["full_name"],
+        "oldname" => formula["oldname"],
+        "version" => formula["versions"]['stable'],
+        "download_url" => formula["urls"]['stable']['url'],
+      }
+    end
+
+    parsed_homebrew_formulas
+  end
+
+  def validate_packages(outdated_repology_packages, brew_formulas)
+    puts "\n-------- Verify Outdated Repology packages as Homebrew Formulas --------"
+    packages = {}
+
+    outdated_repology_packages.each do |package_name, repo_using_package|
+      # Identify homebrew repo
+      repology_homebrew_repo = repo_using_package.select { |repo| repo['repo'] == 'homebrew' }[0]
+      next if repology_homebrew_repo.empty?
+
+      latest_version = nil
+
+      # Identify latest version amongst repos
+      repo_using_package.each do |repo|
+        latest_version = repo['version'] if repo['status'] == 'newest'
+      end
+
+      repology_homebrew_repo['latest_version'] = latest_version if latest_version
+      homebrew_package_details = brew_formulas[repology_homebrew_repo['srcname']]
+
+      # Format package
+      packages[repology_homebrew_repo['srcname']] = format_package(homebrew_package_details, repology_homebrew_repo)
+    end
+
+    packages
+  end
+
+
+  def format_package(homebrew_details, repology_details)
+    puts "- Formatting package: #{repology_details['srcname']}"
+
+    homebrew_formula = HomebrewFormula.new
+    new_download_url = homebrew_formula.generate_new_download_url(homebrew_details['download_url'], homebrew_details['version'], repology_details['latest_version'])
+
+    brew_commands = BrewCommands.new
+    livecheck_response = brew_commands.livecheck_check_formula(repology_details['srcname'])
+    has_open_pr = brew_commands.check_for_open_pr(repology_details['srcname'], new_download_url)
+
+    formatted_package = {
+      'fullname'=> homebrew_details['fullname'],
+      'repology_version' => repology_details['latest_version'],
+      'homebrew_version' => homebrew_details['version'],
+      'livecheck_latest_version' => livecheck_response['livecheck_latest_version'],
+      'current_download_url' => homebrew_details['download_url'],
+      'latest_download_url' => new_download_url,
+      'repology_latest_version' => repology_details['latest_version'],
+      'has_open_pr' => has_open_pr
+    }
+
+    formatted_package
+  end
+
+  def display_version_data(outdated_packages)
+    puts "==============Formatted outdated packages============\n"
+
+    outdated_packages.each do |package_name, package_details|
+      puts ""
+      puts "Package: #{package_name}"
+      puts "Brew current: #{package_details['homebrew_version']}"
+      puts "Repology latest: #{package_details['repology_version']}"
+      puts "Livecheck latest: #{package_details['livecheck_latest_version']}"
+      puts "Has Open PR?: #{package_details['has_open_pr']}"
+    end
+  end
 end