diff --git a/Controller/ConfigController.php b/Controller/ConfigController.php
index 55d8d24..084f535 100644
--- a/Controller/ConfigController.php
+++ b/Controller/ConfigController.php
@@ -21,6 +21,7 @@ class ConfigController extends BaseController
                 'organon_tweaks_emphasize_duedate_default' => (int) $this->configModel->get('organon_tweaks_emphasize_duedate_default', 0),
                 'organon_tweaks_show_all_filter' => (int) $this->configModel->get('organon_tweaks_show_all_filter', 1),
                 'organon_tweaks_month_filters' => (int) $this->configModel->get('organon_tweaks_month_filters', 1),
+                'organon_tweaks_recurring_filters' => (int) $this->configModel->get('organon_tweaks_recurring_filters', 1),
             ),
             'errors' => array(),
         )));
@@ -37,6 +38,7 @@ class ConfigController extends BaseController
         $emphasizeDueDateDefault = isset($values['organon_tweaks_emphasize_duedate_default']) ? 1 : 0;
         $showAllFilter = isset($values['organon_tweaks_show_all_filter']) ? 1 : 0;
         $monthFilters = isset($values['organon_tweaks_month_filters']) ? 1 : 0;
+        $recurringFilters = isset($values['organon_tweaks_recurring_filters']) ? 1 : 0;
 
         if ($this->configModel->save(array(
             'organon_tweaks_always_comment_icon' => $alwaysCommentIcon,
@@ -46,6 +48,7 @@ class ConfigController extends BaseController
             'organon_tweaks_emphasize_duedate_default' => $emphasizeDueDateDefault,
             'organon_tweaks_show_all_filter' => $showAllFilter,
             'organon_tweaks_month_filters' => $monthFilters,
+            'organon_tweaks_recurring_filters' => $recurringFilters,
         ))) {
             $this->flash->success(t('Settings saved successfully.'));
         } else {
@@ -68,6 +71,12 @@ class ConfigController extends BaseController
             $projectHelper->removeGroup($projectHelper::GROUP_MONTH);
         }
 
+        if ($recurringFilters === 1) {
+            $projectHelper->addGroupToAllProjects($projectHelper::GROUP_RECURRING);
+        } else {
+            $projectHelper->removeGroup($projectHelper::GROUP_RECURRING);
+        }
+
         $this->response->redirect($this->helper->url->to('ConfigController', 'show', array('plugin' => 'OrganonTweaks')));
     }
 }
diff --git a/Filter/TaskRecurringFilter.php b/Filter/TaskRecurringFilter.php
new file mode 100644
index 0000000..a99299c
--- /dev/null
+++ b/Filter/TaskRecurringFilter.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace Kanboard\Plugin\OrganonTweaks\Filter;
+
+use Kanboard\Core\Filter\FilterInterface;
+use Kanboard\Filter\BaseFilter;
+use Kanboard\Model\TaskModel;
+use PicoDb\Database;
+
+/**
+ * Filter tasks by recurrence: `recurring:XY`, one attribute with one composite value so it can
+ * INTERSECT the two axes (stacking two values of the same attribute would only OR them).
+ *
+ *   X = system : evt (event-triggered = Kanboard native) | cal (calendar = RecoReco) | any
+ *   Y = role   : ori (original/template) | dup (duplicate/copy) | all
+ *
+ * Conditions are authoritative -- taken straight from how core classifies these cards:
+ *   - evtori = recurrence_status PENDING, evtdup = recurrence_status PROCESSED. This is exactly how
+ *     core colors the board refresh icon (app/Template/board/task_footer.php: normal icon = PENDING,
+ *     fa-inverse = PROCESSED), so the filter matches what the board shows.
+ *   - calori = RecoReco metadata recoreco_enabled=1, caldup = recoreco_clone=1.
+ *   - *all / any* = the OR-unions of the above.
+ *
+ * Cross-plugin: the calendar side reads RecoReco metadata keys. If RecoReco is not installed the
+ * metadata sets are empty, so `cal*` matches nothing and `evt*` still works (event-only degrade).
+ *
+ * One attribute + one value -> single-value path, so the predicates below are grouped in a scoped
+ * beginOr/closeOr and the whole group still ANDs with any other search attribute.
+ */
+class TaskRecurringFilter extends BaseFilter implements FilterInterface
+{
+    private $db;
+
+    public function setDatabase(Database $db)
+    {
+        $this->db = $db;
+        return $this;
+    }
+
+    public function getAttributes()
+    {
+        return array('recurring');
+    }
+
+    public function apply()
+    {
+        $value = strtolower(trim((string) $this->value));
+        $system = substr($value, 0, 3); // evt | cal | any
+        $role = substr($value, 3, 3);   // ori | dup | all
+
+        if (! in_array($system, array('evt', 'cal', 'any'), true) ||
+            ! in_array($role, array('ori', 'dup', 'all'), true)) {
+            return $this; // unknown/typo value -> no-op
+        }
+
+        $wantEvt = $system === 'evt' || $system === 'any';
+        $wantCal = $system === 'cal' || $system === 'any';
+        $wantOri = $role === 'ori' || $role === 'all';
+        $wantDup = $role === 'dup' || $role === 'all';
+
+        $this->query->beginOr();
+
+        if ($wantEvt && $wantOri) {
+            $this->query->eq(TaskModel::TABLE.'.recurrence_status', TaskModel::RECURRING_STATUS_PENDING);
+        }
+
+        if ($wantEvt && $wantDup) {
+            $this->query->eq(TaskModel::TABLE.'.recurrence_status', TaskModel::RECURRING_STATUS_PROCESSED);
+        }
+
+        if ($wantCal && $wantOri) {
+            $this->query->in(TaskModel::TABLE.'.id', $this->metaIds('recoreco_enabled'));
+        }
+
+        if ($wantCal && $wantDup) {
+            $this->query->in(TaskModel::TABLE.'.id', $this->metaIds('recoreco_clone'));
+        }
+
+        $this->query->closeOr();
+
+        return $this;
+    }
+
+    /**
+     * Task ids carrying a RecoReco metadata flag set to 1. Returns a non-matching sentinel when the
+     * set is empty so the IN clause matches nothing (RecoReco absent -> event-only degrade).
+     *
+     * @param  string $name
+     * @return array
+     */
+    private function metaIds($name)
+    {
+        $ids = $this->db->table('task_has_metadata')
+            ->eq('name', $name)
+            ->eq('value', '1')
+            ->findAllByColumn('task_id');
+
+        return ! empty($ids) ? $ids : array(-1);
+    }
+}
diff --git a/Helper/OrganonProjectHelper.php b/Helper/OrganonProjectHelper.php
index 3862af2..9e036a5 100644
--- a/Helper/OrganonProjectHelper.php
+++ b/Helper/OrganonProjectHelper.php
@@ -27,6 +27,7 @@ class OrganonProjectHelper extends Base
     // Config toggles for the auto-managed custom-filter groups.
     const SHOW_ALL_FILTER_KEY = 'organon_tweaks_show_all_filter';
     const MONTH_FILTERS_KEY = 'organon_tweaks_month_filters';
+    const RECURRING_FILTERS_KEY = 'organon_tweaks_recurring_filters';
 
     // Reserved custom-filter groups: each row is [name, query, append]. The NAME is reserved by the
     // plugin (fixed, non-translated strings so dedup is stable across locales); a user's own filter
@@ -39,6 +40,13 @@ class OrganonProjectHelper extends Base
         array('Due this month', 'duemonth:this', 1),
         array('Around this month', 'aroundmonth:this', 1),
     );
+    const GROUP_RECURRING = array(
+        array('All recurring', 'recurring:anyall', 1),
+        array('Event recurring', 'recurring:evtall', 1),
+        array('Calendar recurring', 'recurring:calall', 1),
+        array('Recurring templates', 'recurring:anyori', 1),
+        array('Recurring duplicates', 'recurring:anydup', 1),
+    );
 
     /**
      * Should the current board emphasize the due date? Board pages only (project_id in the route).
@@ -135,6 +143,10 @@ class OrganonProjectHelper extends Base
         if ((int) $this->configModel->get(self::MONTH_FILTERS_KEY, 1) === 1) {
             $this->ensureGroup($project_id, self::GROUP_MONTH);
         }
+
+        if ((int) $this->configModel->get(self::RECURRING_FILTERS_KEY, 1) === 1) {
+            $this->ensureGroup($project_id, self::GROUP_RECURRING);
+        }
     }
 
     private function ensureGroup($project_id, array $rows)
diff --git a/Plugin.php b/Plugin.php
index 3307cf8..41329a4 100644
--- a/Plugin.php
+++ b/Plugin.php
@@ -58,26 +58,29 @@ class Plugin extends Base
             ));
         }
 
-        // Auto-managed shared custom filters (v1.5 "Show all tasks", v1.6 month filters). Ensured
-        // lazily whenever a project header renders (covers old + new boards); each group is gated by
-        // its own config toggle inside OrganonProjectHelper::ensureBoardFilters(). The toggles also
-        // bulk add/remove the filters (ConfigController).
+        // Auto-managed shared custom filters (v1.5 "Show all tasks", v1.6 month filters, v1.7
+        // recurring filters). Ensured lazily whenever a project header renders (covers old + new
+        // boards); each group is gated by its own config toggle inside
+        // OrganonProjectHelper::ensureBoardFilters(). The toggles also bulk add/remove the filters.
         $showAllFilters = (int) $this->configModel->get('organon_tweaks_show_all_filter', 1) === 1;
         $monthFilters = (int) $this->configModel->get('organon_tweaks_month_filters', 1) === 1;
-        if ($showAllFilters || $monthFilters) {
+        $recurringFilters = (int) $this->configModel->get('organon_tweaks_recurring_filters', 1) === 1;
+        if ($showAllFilters || $monthFilters || $recurringFilters) {
             $this->template->hook->attach('template:project:header:before', 'organonTweaks:project_header/board_filters');
         }
 
         // Custom board-search keywords, registered into the task lexer by extending its factory
         // service (Pimple preserves factory status on extend, so the lexer stays per-request fresh).
-        // `duemonth:VALUE` = a whole calendar month; `aroundmonth:VALUE` = that month padded by 10
-        // days on each side. Always available to type, independent of the bookmark toggles above.
-        // Guarded so a future Kanboard service rename no-ops (keyword absent) instead of breaking.
+        // `duemonth:VALUE` / `aroundmonth:VALUE` = a calendar month (padded by 10 days for around);
+        // `recurring:XY` = classify recurrence (X system evt/cal/any, Y role ori/dup/all). Always
+        // available to type, independent of the bookmark toggles above. Guarded so a future Kanboard
+        // service rename no-ops (keyword absent) instead of breaking.
         if (isset($this->container['taskLexer'])) {
             $this->container->extend('taskLexer', function ($builder, $c) {
                 return $builder
                     ->withFilter((new \Kanboard\Plugin\OrganonTweaks\Filter\TaskMonthRangeFilter())->setAttribute('duemonth')->setPadDays(0))
-                    ->withFilter((new \Kanboard\Plugin\OrganonTweaks\Filter\TaskMonthRangeFilter())->setAttribute('aroundmonth')->setPadDays(10));
+                    ->withFilter((new \Kanboard\Plugin\OrganonTweaks\Filter\TaskMonthRangeFilter())->setAttribute('aroundmonth')->setPadDays(10))
+                    ->withFilter((new \Kanboard\Plugin\OrganonTweaks\Filter\TaskRecurringFilter())->setDatabase($c['db']));
             });
         }
     }
@@ -106,7 +109,7 @@ class Plugin extends Base
 
     public function getPluginVersion()
     {
-        return '1.6.1';
+        return '1.7.0';
     }
 
     public function getPluginHomepage()
diff --git a/Template/config/show.php b/Template/config/show.php
index dbe418a..0ed5312 100644
--- a/Template/config/show.php
+++ b/Template/config/show.php
@@ -46,7 +46,7 @@
         <p class="form-help"><?= t('"Due this month" and "Around this month" (duemonth: / aroundmonth: keywords).') ?></p>
 
         <?= $this->form->checkbox('organon_tweaks_recurring_filters', t('Add recurring filters to every board'), 1, isset($values['organon_tweaks_recurring_filters']) && $values['organon_tweaks_recurring_filters'] == 1) ?>
-        <p class="form-help"><?= t('Filter by recurrence (recurring: keyword) -- not active yet.') ?></p>
+        <p class="form-help"><?= t('"All recurring", by system (event/calendar) and by role (templates/duplicates), via the recurring: keyword.') ?></p>
     </fieldset>
 
     <div class="form-actions">
diff --git a/VERSION b/VERSION
index 50e995b..05031d4 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-OrganonTweaks v1.6.1
+OrganonTweaks v1.7