diff --git a/Applications/IRCClient/IRCAppWindow.cpp b/Applications/IRCClient/IRCAppWindow.cpp
index 00e2cd7784..0fbb1fe213 100644
--- a/Applications/IRCClient/IRCAppWindow.cpp
+++ b/Applications/IRCClient/IRCAppWindow.cpp
@@ -41,7 +41,6 @@
 #include <LibGUI/ToolBar.h>
 #include <LibGUI/ToolBarContainer.h>
 #include <stdio.h>
-#include <stdlib.h>
 
 static IRCAppWindow* s_the;
 
diff --git a/Applications/IRCClient/IRCAppWindow.h b/Applications/IRCClient/IRCAppWindow.h
index 241955af41..10f0f5a4ee 100644
--- a/Applications/IRCClient/IRCAppWindow.h
+++ b/Applications/IRCClient/IRCAppWindow.h
@@ -33,6 +33,7 @@
 
 class IRCAppWindow : public GUI::Window {
     C_OBJECT(IRCAppWindow);
+
 public:
     virtual ~IRCAppWindow() override;
 
diff --git a/Applications/IRCClient/IRCChannel.cpp b/Applications/IRCClient/IRCChannel.cpp
index dee3111eda..4bbec9cb11 100644
--- a/Applications/IRCClient/IRCChannel.cpp
+++ b/Applications/IRCClient/IRCChannel.cpp
@@ -28,7 +28,6 @@
 #include "IRCChannelMemberListModel.h"
 #include "IRCClient.h"
 #include <stdio.h>
-#include <time.h>
 
 IRCChannel::IRCChannel(IRCClient& client, const String& name)
     : m_client(client)
diff --git a/Applications/IRCClient/IRCChannel.h b/Applications/IRCClient/IRCChannel.h
index 8bc8e58c06..d48e5afc5d 100644
--- a/Applications/IRCClient/IRCChannel.h
+++ b/Applications/IRCClient/IRCChannel.h
@@ -27,10 +27,9 @@
 #pragma once
 
 #include "IRCLogBuffer.h"
-#include <AK/String.h>
-#include <AK/CircularQueue.h>
-#include <AK/RefPtr.h>
 #include <AK/RefCounted.h>
+#include <AK/RefPtr.h>
+#include <AK/String.h>
 #include <AK/Vector.h>
 
 class IRCClient;
diff --git a/Applications/IRCClient/IRCClient.cpp b/Applications/IRCClient/IRCClient.cpp
index f6f4837195..947be679f3 100644
--- a/Applications/IRCClient/IRCClient.cpp
+++ b/Applications/IRCClient/IRCClient.cpp
@@ -35,13 +35,8 @@
 #include <AK/StringBuilder.h>
 #include <LibCore/DateTime.h>
 #include <LibCore/Notifier.h>
-#include <arpa/inet.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <sys/socket.h>
 #include <pwd.h>
-#include <time.h>
-#include <unistd.h>
+#include <stdio.h>
 
 #define IRC_DEBUG
 
@@ -305,15 +300,15 @@ void IRCClient::handle(const Message& msg)
             return handle_rpl_namreply(msg);
         case RPL_ENDOFNAMES:
             return handle_rpl_endofnames(msg);
-	case RPL_BANLIST:
+        case RPL_BANLIST:
             return handle_rpl_banlist(msg);
-	case RPL_ENDOFBANLIST:
+        case RPL_ENDOFBANLIST:
             return handle_rpl_endofbanlist(msg);
-	case ERR_NOSUCHNICK:
+        case ERR_NOSUCHNICK:
             return handle_err_nosuchnick(msg);
-	case ERR_UNKNOWNCOMMAND:
+        case ERR_UNKNOWNCOMMAND:
             return handle_err_unknowncommand(msg);
-	case ERR_NICKNAMEINUSE:
+        case ERR_NICKNAMEINUSE:
             return handle_err_nicknameinuse(msg);
         }
     }
@@ -901,7 +896,7 @@ void IRCClient::handle_user_command(const String& input)
             auto channel = parts[1];
             part_channel(channel);
             join_channel(channel);
-	} else {
+        } else {
             auto* window = current_window();
             if (!window || window->type() != IRCWindow::Type::Channel)
                 return;
@@ -915,7 +910,7 @@ void IRCClient::handle_user_command(const String& input)
         if (parts.size() >= 2) {
             auto channel = parts[1];
             send_banlist(channel);
-	} else {
+        } else {
             auto* window = current_window();
             if (!window || window->type() != IRCWindow::Type::Channel)
                 return;
@@ -936,14 +931,14 @@ void IRCClient::handle_user_command(const String& input)
             auto channel = parts[1];
             auto topic = input.view().substring_view_starting_after_substring(channel);
             send_topic(channel, topic);
-	} else {
+        } else {
             auto* window = current_window();
             if (!window || window->type() != IRCWindow::Type::Channel)
                 return;
             auto channel = window->channel().name();
             auto topic = input.view().substring_view_starting_after_substring(parts[0]);
             send_topic(channel, topic);
-	}
+        }
         return;
     }
     if (command == "/KICK") {
@@ -959,7 +954,7 @@ void IRCClient::handle_user_command(const String& input)
             auto nick = parts[2];
             auto reason = input.view().substring_view_starting_after_substring(nick);
             send_kick(channel, nick, reason);
-	} else {
+        } else {
             auto* window = current_window();
             if (!window || window->type() != IRCWindow::Type::Channel)
                 return;
@@ -967,7 +962,7 @@ void IRCClient::handle_user_command(const String& input)
             auto nick = parts[1];
             auto reason = input.view().substring_view_starting_after_substring(nick);
             send_kick(channel, nick, reason);
-	}
+        }
         return;
     }
     if (command == "/LIST") {
diff --git a/Applications/IRCClient/IRCLogBuffer.cpp b/Applications/IRCClient/IRCLogBuffer.cpp
index 0dd2d8fc15..f1c877f16f 100644
--- a/Applications/IRCClient/IRCLogBuffer.cpp
+++ b/Applications/IRCClient/IRCLogBuffer.cpp
@@ -31,9 +31,7 @@
 #include <LibWeb/DOM/ElementFactory.h>
 #include <LibWeb/DOM/HTMLBodyElement.h>
 #include <LibWeb/DOM/Text.h>
-#include <LibWeb/Dump.h>
 #include <LibWeb/Parser/HTMLParser.h>
-#include <stdio.h>
 #include <time.h>
 
 NonnullRefPtr<IRCLogBuffer> IRCLogBuffer::create()
diff --git a/Applications/IRCClient/IRCQuery.cpp b/Applications/IRCClient/IRCQuery.cpp
index abf3df68c2..286e1aba9d 100644
--- a/Applications/IRCClient/IRCQuery.cpp
+++ b/Applications/IRCClient/IRCQuery.cpp
@@ -27,7 +27,6 @@
 #include "IRCQuery.h"
 #include "IRCClient.h"
 #include <stdio.h>
-#include <time.h>
 
 IRCQuery::IRCQuery(IRCClient& client, const String& name)
     : m_client(client)
diff --git a/Applications/IRCClient/IRCQuery.h b/Applications/IRCClient/IRCQuery.h
index 26625e490a..31c622edcc 100644
--- a/Applications/IRCClient/IRCQuery.h
+++ b/Applications/IRCClient/IRCQuery.h
@@ -27,10 +27,10 @@
 #pragma once
 
 #include "IRCLogBuffer.h"
-#include <AK/String.h>
 #include <AK/CircularQueue.h>
-#include <AK/RefPtr.h>
 #include <AK/RefCounted.h>
+#include <AK/RefPtr.h>
+#include <AK/String.h>
 #include <AK/Vector.h>
 
 class IRCClient;
diff --git a/Applications/IRCClient/IRCWindow.cpp b/Applications/IRCClient/IRCWindow.cpp
index b35044efa5..e4f9f6aa21 100644
--- a/Applications/IRCClient/IRCWindow.cpp
+++ b/Applications/IRCClient/IRCWindow.cpp
@@ -31,8 +31,8 @@
 #include <AK/StringBuilder.h>
 #include <LibGUI/Action.h>
 #include <LibGUI/BoxLayout.h>
-#include <LibGUI/Menu.h>
 #include <LibGUI/InputBox.h>
+#include <LibGUI/Menu.h>
 #include <LibGUI/Notification.h>
 #include <LibGUI/Splitter.h>
 #include <LibGUI/TableView.h>
diff --git a/Applications/IRCClient/IRCWindowListModel.cpp b/Applications/IRCClient/IRCWindowListModel.cpp
index 6e024c7878..0a205111b3 100644
--- a/Applications/IRCClient/IRCWindowListModel.cpp
+++ b/Applications/IRCClient/IRCWindowListModel.cpp
@@ -27,9 +27,6 @@
 #include "IRCWindowListModel.h"
 #include "IRCChannel.h"
 #include "IRCClient.h"
-#include "IRCWindow.h"
-#include <stdio.h>
-#include <time.h>
 
 IRCWindowListModel::IRCWindowListModel(IRCClient& client)
     : m_client(client)