diff --git a/src/libs/extensionsystem/optionsparser.cpp b/src/libs/extensionsystem/optionsparser.cpp
index 16b96f2e5c0..09d191edf6d 100644
--- a/src/libs/extensionsystem/optionsparser.cpp
+++ b/src/libs/extensionsystem/optionsparser.cpp
@@ -147,16 +147,22 @@ bool OptionsParser::checkForLoadOption()
     if (m_currentArg != QLatin1String(LOAD_OPTION))
         return false;
     if (nextToken(RequiredToken)) {
-        PluginSpec *spec = m_pmPrivate->pluginByName(m_currentArg);
-        if (!spec) {
-            if (m_errorString)
-                *m_errorString = QCoreApplication::translate("PluginManager",
-                                                             "The plugin \"%1\" does not exist.")
-                    .arg(m_currentArg);
-            m_hasError = true;
-        } else {
-            spec->d->setForceEnabled(true);
+        if (m_currentArg == QLatin1String("all")) {
+            foreach (PluginSpec *spec, m_pmPrivate->pluginSpecs)
+                spec->d->setForceEnabled(true);
             m_isDependencyRefreshNeeded = true;
+        } else {
+            PluginSpec *spec = m_pmPrivate->pluginByName(m_currentArg);
+            if (!spec) {
+                if (m_errorString)
+                    *m_errorString = QCoreApplication::translate("PluginManager",
+                                                                 "The plugin \"%1\" does not exist.")
+                        .arg(m_currentArg);
+                m_hasError = true;
+            } else {
+                spec->d->setForceEnabled(true);
+                m_isDependencyRefreshNeeded = true;
+            }
         }
     }
     return true;
@@ -167,18 +173,24 @@ bool OptionsParser::checkForNoLoadOption()
     if (m_currentArg != QLatin1String(NO_LOAD_OPTION))
         return false;
     if (nextToken(RequiredToken)) {
-        PluginSpec *spec = m_pmPrivate->pluginByName(m_currentArg);
-        if (!spec) {
-            if (m_errorString)
-                *m_errorString = QCoreApplication::translate("PluginManager",
-                                                             "The plugin \"%1\" does not exist.").arg(m_currentArg);
-            m_hasError = true;
-        } else {
-            spec->d->setForceDisabled(true);
-            // recursively disable all plugins that require this plugin
-            foreach (PluginSpec *dependantSpec, PluginManager::pluginsRequiringPlugin(spec))
-                dependantSpec->d->setForceDisabled(true);
+        if (m_currentArg == QLatin1String("all")) {
+            foreach (PluginSpec *spec, m_pmPrivate->pluginSpecs)
+                spec->d->setForceDisabled(true);
             m_isDependencyRefreshNeeded = true;
+        } else {
+            PluginSpec *spec = m_pmPrivate->pluginByName(m_currentArg);
+            if (!spec) {
+                if (m_errorString)
+                    *m_errorString = QCoreApplication::translate("PluginManager",
+                                                                 "The plugin \"%1\" does not exist.").arg(m_currentArg);
+                m_hasError = true;
+            } else {
+                spec->d->setForceDisabled(true);
+                // recursively disable all plugins that require this plugin
+                foreach (PluginSpec *dependantSpec, PluginManager::pluginsRequiringPlugin(spec))
+                    dependantSpec->d->setForceDisabled(true);
+                m_isDependencyRefreshNeeded = true;
+            }
         }
     }
     return true;
diff --git a/src/libs/extensionsystem/pluginmanager.cpp b/src/libs/extensionsystem/pluginmanager.cpp
index 459141eca2a..8f0100e4b80 100644
--- a/src/libs/extensionsystem/pluginmanager.cpp
+++ b/src/libs/extensionsystem/pluginmanager.cpp
@@ -699,9 +699,17 @@ void PluginManager::formatOptions(QTextStream &str, int optionIndentation, int d
     formatOption(str, QLatin1String(OptionsParser::LOAD_OPTION),
                  QLatin1String("plugin"), QLatin1String("Load <plugin> and all plugins that it requires"),
                  optionIndentation, descriptionIndentation);
+    formatOption(str, QLatin1String(OptionsParser::LOAD_OPTION) + QLatin1String(" all"),
+                 QString(), QLatin1String("Load all available plugins"),
+                 optionIndentation, descriptionIndentation);
     formatOption(str, QLatin1String(OptionsParser::NO_LOAD_OPTION),
                  QLatin1String("plugin"), QLatin1String("Do not load <plugin> and all plugins that require it"),
                  optionIndentation, descriptionIndentation);
+    formatOption(str, QLatin1String(OptionsParser::NO_LOAD_OPTION) + QLatin1String(" all"),
+                 QString(), QString::fromLatin1("Do not load any plugin (useful when "
+                                                "followed by one or more \"%1\" arguments)")
+                 .arg(QLatin1String(OptionsParser::LOAD_OPTION)),
+                 optionIndentation, descriptionIndentation);
     formatOption(str, QLatin1String(OptionsParser::PROFILE_OPTION),
                  QString(), QLatin1String("Profile plugin loading"),
                  optionIndentation, descriptionIndentation);