diff --git a/htdocs/crashes.php b/htdocs/crashes.php
index d8fb510..901d639 100644
--- a/htdocs/crashes.php
+++ b/htdocs/crashes.php
@@ -4,9 +4,12 @@ define("SITE_ROOT", realpath(dirname(__file__)));
 require_once SITE_ROOT . "/lib/init.php";
 $S->requireUser();
 
-$total = CrashReport::getTotal();
-$reports = CrashReport::getReports();
+$filter = new SearchFilter();
+$total = CrashReport::getTotal($filter);
+$reports = CrashReport::getReports($filter);
 Layout::header();
+
+$filter->render();
 ?>
 
 <p>Reports <strong><?php echo $total ?></strong></p>
diff --git a/htdocs/lib/CrashReport.php b/htdocs/lib/CrashReport.php
index 5ec8827..176ea7c 100644
--- a/htdocs/lib/CrashReport.php
+++ b/htdocs/lib/CrashReport.php
@@ -61,11 +61,12 @@ class CrashReport
         }
         return $ret;
     }
-    function getTotal()
+    function getTotal($filter)
     {
         global $DB;
         
-        if (!$res = $DB->query("select count(id) as total from reports") OR !$row = $DB->fetchRow($res))
+        $where = $filter->getWhere();
+        if (!$res = $DB->query("select count(id) as total from reports $where") OR !$row = $DB->fetchRow($res))
         {
             return 0;
         }
@@ -75,12 +76,12 @@ class CrashReport
         }
     }
     
-    function getReports($offset = 0, $limit = 100)
+    function getReports($filter)
     {
         global $DB;
         
         $ret = array();
-        if (!$res = $DB->query(kl_str_sql("select * from reports order by id desc limit !i offset !i", $limit, $offset)))
+        if (!$res = $DB->query("select * from reports " . $filter->getWhere() . kl_str_sql(" order by id desc limit !i offset !i", $filter->limit, $filter->offset)))
         {
             return $ret;
         }
diff --git a/htdocs/lib/Layout.php b/htdocs/lib/Layout.php
index 3d04cac..6e85eed 100644
--- a/htdocs/lib/Layout.php
+++ b/htdocs/lib/Layout.php
@@ -156,7 +156,7 @@ $().ready(function(){
 	<a href="<?php echo URL_ROOT ?>"><img src="images/singularity_icon.png" width="150px" height="150px"/></a>
       </div>
       <div style="display: inline-block;color: #eee; padding: 55px 0 0 30px; vertical-align: top;">
-	<a href="<?php echo URL_ROOT ?>" style="font-size: 4em; font-weight: bold;">Sigularity Viewer</a>
+	<a href="<?php echo URL_ROOT ?>" style="font-size: 4em; font-weight: bold;">Singularity Viewer</a>
 	<br/>
 	<span style="font-size: 1.6em;">Automated Crash Report Processing</span>
       </div>
diff --git a/htdocs/lib/SearchFilter.php b/htdocs/lib/SearchFilter.php
new file mode 100644
index 0000000..14cc333
--- /dev/null
+++ b/htdocs/lib/SearchFilter.php
@@ -0,0 +1,178 @@
+<?php
+
+class SearchFilter
+{
+    public $os;
+    public $chan;
+    public $version;
+    public $grid;
+    public $sort_by;
+    public $sort_order;
+    public static $sort_keys = array("date", "os", "version", "grid");
+    public static $sort_orders = array("asc", "desc");
+    public $limit = 100;
+    public $offset = 0;
+    public $page = 0;
+    
+    function SearchFilter()
+    {
+        if (in_array($_GET["sort_by"], self::$sort_keys))
+        {
+            $this->sort_by = $_GET["sort_by"];
+        }
+
+        if (in_array($_GET["sort_order"], self::$sort_orders))
+        {
+            $this->sort_by = $_GET["sort_order"];
+        }
+        
+        if (strlen($_GET["os"]))
+        {
+            $this->os = $_GET["os"];
+        }
+
+        if (strlen($_GET["chan"]))
+        {
+            $this->chan = $_GET["chan"];
+        }
+
+        if (strlen($_GET["version"]))
+        {
+            $this->version = $_GET["version"];
+        }
+
+        if (strlen($_GET["page"]))
+        {
+            $this->page = $_GET["page"];
+        }
+
+        if (strlen($_GET["grid"]))
+        {
+            $this->grid = $_GET["grid"];
+        }
+    }
+    
+    function getWhere()
+    {
+        $cond = array();
+        if ($this->os) $cond[] = kl_str_sql("os_type=!s", $this->os);
+        if ($this->version) $cond[] = kl_str_sql("client_version=!s", $this->version);
+        if ($this->chan) $cond[] = kl_str_sql("client_channel=!s", $this->chan);
+        if ($this->grid) $cond[] = kl_str_sql("grid=!s", $this->grid);
+        if (!count($cond)) return "";
+        return "where " . implode(" and ", $cond);
+    }
+    
+    function getVersions()
+    {
+        global $DB;
+        
+        $ret = array();
+        $where = $this->chan ? kl_str_sql("where client_channel=!s", $this->chan) : '';
+        $q = "select distinct client_version from reports $where order by client_version desc";
+        if (!$res = $DB->query($q))
+        {
+            return $ret;
+        }
+        
+        while ($row = $DB->fetchRow($res))
+        {
+            $ret[] = $row["client_version"];
+        }
+        
+        return $ret;
+    }
+    
+    function getGrids()
+    {
+        global $DB;
+        
+        $ret = array();
+        $q = "select distinct grid from reports order by grid asc";
+        if (!$res = $DB->query($q))
+        {
+            return $ret;
+        }
+        
+        while ($row = $DB->fetchRow($res))
+        {
+            $ret[] = $row["grid"];
+        }
+        
+        return $ret;
+    }
+
+    function render()
+    {
+        $ver = $this->getVersions();
+        $grids = $this->getGrids();
+?>
+<script>
+  $(function() {
+    $( ".radio" )
+    .buttonset()
+    .click(function() {
+       $(this).closest("form").submit();
+    });
+  });
+
+</script>
+
+<form method="get">
+<div style="display: inline-block;" class="ui-widget ui-corner-all ui-widget-content">
+    <div class="ui-widget-header" style="padding: 5px">Filter</div>
+
+    <div style="display: inline-block;">
+        <div class="radio" style="padding: 10px">
+            Channel<br />
+            <input type="radio" id="chan1" name="chan" value="" <?php echo !$this->chan ? 'checked="checked"' : '' ?>/><label for="chan1">All</label>
+            <input type="radio" id="chan2" name="chan" value="Singularity" <?php echo $this->chan == "Singularity" ? 'checked="checked"' : '' ?>/><label for="chan2">Singularity</label>
+            <input type="radio" id="chan3" name="chan" value="SingularityAlpha" <?php echo $this->chan == "SingularityAlpha" ? 'checked="checked"' : '' ?>/><label for="chan3">SingularityAlpha</label>
+        </div>
+    </div>
+    
+    <div style="display: inline-block;" style="padding: 10px">
+        Version<br/>
+        <select class="ui-widget-content" name="version" onchange="this.form.submit();" style="width: 100px;"> 
+            <option value="" <?php echo !$this->version ? 'selected="selected"' : '' ?>>All</option>
+<?php
+for($i = 0; $i < count($ver); $i++)
+{
+    $sel = $this->version == $ver[$i] ? ' selected="selected"' : '';
+    print '<option value="' . htmlentities($ver[$i]) . '"' . $sel . '>' . htmlentities($ver[$i]). '</option>';
+}
+?>
+        </select>
+    </div>
+
+    <div style="display: inline-block;">
+        <div class="radio" style="padding: 10px">
+            Operating system<br />
+            <input type="radio" id="os_all" name="os" value="" <?php echo !$this->os ? 'checked="checked"' : '' ?>/><label for="os_all">All</label>
+            <input type="radio" id="os_windows" name="os" value="Windows NT" <?php echo $this->os == "Windows NT" ? 'checked="checked"' : '' ?>/><label for="os_windows">Windows</label>
+            <input type="radio" id="os_linux" name="os" value="Linux" <?php echo $this->os == "Linux" ? 'checked="checked"' : '' ?>/><label for="os_linux">Linux</label>
+            <input type="radio" id="os_mac" name="os" value="Mac OS X" <?php echo $this->os == "Mac OS X" ? 'checked="checked"' : '' ?> /><label for="os_mac">Mac</label>
+        </div>
+    </div>
+
+    <div style="display: inline-block;">
+        Grid<br/>
+        <select class="ui-widget-content" name="grid" onchange="this.form.submit();" style="width: 200px; margin: 0px 20px 0 0; "> 
+            <option value="" <?php echo !$this->grid ? 'selected="selected"' : '' ?>>All</option>
+<?php
+for($i = 0; $i < count($grids); $i++)
+{
+    $sel = $this->grid == $grids[$i] ? ' selected="selected"' : '';
+    print '<option value="' . htmlentities($grids[$i]) . '"' . $sel . '>' . htmlentities($grids[$i]). '</option>';
+}
+?>
+        </select>
+    </div>
+
+</div>
+</form>
+        
+<?php
+    }
+    
+}
\ No newline at end of file