diff --git a/src/main/java/net/vhati/modmanager/json/GrognakCatalogFetcher.java b/src/main/java/net/vhati/modmanager/json/URLFetcher.java
similarity index 63%
rename from src/main/java/net/vhati/modmanager/json/GrognakCatalogFetcher.java
rename to src/main/java/net/vhati/modmanager/json/URLFetcher.java
index e336a6f..d553cb4 100644
--- a/src/main/java/net/vhati/modmanager/json/GrognakCatalogFetcher.java
+++ b/src/main/java/net/vhati/modmanager/json/URLFetcher.java
@@ -22,22 +22,20 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
 
-public class GrognakCatalogFetcher {
+public class URLFetcher {
 
-	private static final Logger log = LogManager.getLogger(GrognakCatalogFetcher.class);
-
-	public static final String CATALOG_URL = "https://raw.github.com/Vhati/Slipstream-Mod-Manager/master/skel_common/backup/current_catalog.json";
+	private static final Logger log = LogManager.getLogger(URLFetcher.class);
 
 
 	/**
-	 * Downloads the latest mod catalog.
+	 * Downloads content from a url into a file, if the remote content has changed.
 	 *
-	 * @return true if the catalog successfully downloaded, false otherwise
+	 * @return true if successfully downloaded, false otherwise
 	 */
-	public static boolean fetchCatalog( String catalogURL, File catalogFile, File eTagFile ) {
+	public static boolean refetchURL( String url, File localFile, File eTagFile ) {
 		String localETag = null;
 
-		log.debug( "Attempting to download a newer catalog..." );
+		log.debug( String.format( "Attempting to download the latest \"%s\".", localFile.getName() ) );
 		if ( eTagFile.exists() ) {
 			// Load the old eTag.
 			InputStream etagIn = null;
@@ -50,7 +48,7 @@ public class GrognakCatalogFetcher {
 			}
 			catch ( IOException e ) {
 				// Not serious enough to be a real error.
-				log.debug( String.format( "Error reading catalog eTag from \"%s\".", eTagFile.getName() ), e );
+				log.debug( String.format( "Error reading eTag from \"%s\".", eTagFile.getName() ), e );
 			}
 			finally {
 				try {if ( etagIn != null ) etagIn.close();}
@@ -60,13 +58,12 @@ public class GrognakCatalogFetcher {
 
 		String remoteETag = null;
 		InputStream urlIn = null;
-		OutputStream catalogOut = null;
+		OutputStream localOut = null;
 		try {
-			URL url = new URL( catalogURL );
-			URLConnection conn = url.openConnection();
+			URLConnection conn = new URL( url ).openConnection();
 
 			if ( conn instanceof HttpURLConnection == false ) {
-				log.error( String.format( "Non-Http(s) URL given for catalog fetching: %s", catalogURL ) );
+				log.error( String.format( "Non-Http(s) URL given for fetching: %s", url ) );
 				return false;
 			}
 			HttpURLConnection httpConn = (HttpURLConnection)conn;
@@ -79,10 +76,10 @@ public class GrognakCatalogFetcher {
 			int responseCode = httpConn.getResponseCode();
 
 			if ( responseCode == HttpURLConnection.HTTP_NOT_MODIFIED ) {
-				log.debug( "The server's catalog has not been modified since the previous check." );
+				log.debug( String.format( "The server's \"%s\" has not been modified since the previous check.", httpConn.getURL().getFile() ) );
 
-				// Update the catalog file's timestamp as if it had downloaded.
-				catalogFile.setLastModified( new Date().getTime() );
+				// Update the local file's timestamp as if it had downloaded.
+				localFile.setLastModified( new Date().getTime() );
 
 				return false;
 			}
@@ -93,29 +90,26 @@ public class GrognakCatalogFetcher {
 					remoteETag = eTagValues.get( 0 );
 
 				urlIn = httpConn.getInputStream();
-				catalogOut = new FileOutputStream( catalogFile );
+				localOut = new FileOutputStream( localFile );
 				byte[] buf = new byte[4096];
 				int len;
 				while ( (len = urlIn.read(buf)) >= 0 ) {
-					catalogOut.write( buf, 0, len );
+					localOut.write( buf, 0, len );
 				}
 			}
 			else {
-				log.error( String.format( "Catalog download request failed: HTTP Code %d (%s).", responseCode, httpConn.getResponseMessage() ) );
+				log.error( String.format( "Download request failed: HTTP Code %d (%s).", responseCode, httpConn.getResponseMessage() ) );
 				return false;
 			}
 		}
-		catch ( MalformedURLException e ) {
-			log.error( "Error fetching latest catalog.", e );
-		}
 		catch ( IOException e ) {
-			log.error( "Error fetching latest catalog.", e );
+			log.error( String.format( "Error downloading the latest \"%s\".", localFile.getName() ), e );
 		}
 		finally {
 			try {if ( urlIn != null ) urlIn.close();}
 			catch ( IOException e ) {}
 
-			try {if ( catalogOut != null ) catalogOut.close();}
+			try {if ( localOut != null ) localOut.close();}
 			catch ( IOException e ) {}
 		}
 
@@ -129,7 +123,7 @@ public class GrognakCatalogFetcher {
 				bw.flush();
 			}
 			catch ( IOException e ) {
-				log.error( String.format( "Error writing catalog eTag to \"%s\".", eTagFile.getName() ), e );
+				log.error( String.format( "Error writing eTag to \"%s\".", eTagFile.getName() ), e );
 			}
 			finally {
 				try {if ( etagOut != null ) etagOut.close();}
diff --git a/src/main/java/net/vhati/modmanager/ui/ManagerFrame.java b/src/main/java/net/vhati/modmanager/ui/ManagerFrame.java
index a4f16c7..5113f73 100644
--- a/src/main/java/net/vhati/modmanager/ui/ManagerFrame.java
+++ b/src/main/java/net/vhati/modmanager/ui/ManagerFrame.java
@@ -72,8 +72,8 @@ import net.vhati.modmanager.core.ModUtilities;
 import net.vhati.modmanager.core.Report;
 import net.vhati.modmanager.core.Report.ReportFormatter;
 import net.vhati.modmanager.core.SlipstreamConfig;
-import net.vhati.modmanager.json.GrognakCatalogFetcher;
 import net.vhati.modmanager.json.JacksonGrognakCatalogReader;
+import net.vhati.modmanager.json.URLFetcher;
 import net.vhati.modmanager.ui.ChecklistTableModel;
 import net.vhati.modmanager.ui.InertPanel;
 import net.vhati.modmanager.ui.ModInfoArea;
@@ -91,6 +91,9 @@ public class ManagerFrame extends JFrame implements ActionListener, HashObserver
 
 	private static final Logger log = LogManager.getLogger(ManagerFrame.class);
 
+	public static final String CATALOG_URL = "https://raw.github.com/Vhati/Slipstream-Mod-Manager/master/skel_common/backup/current_catalog.json";
+	public static final String AUTOUPDATE_URL = "https://raw.github.com/Vhati/Slipstream-Mod-Manager/master/auto-update.json";
+
 	private File backupDir = new File( "./backup/" );
 	private File modsDir = new File( "./mods/" );
 
@@ -429,8 +432,7 @@ public class ManagerFrame extends JFrame implements ActionListener, HashObserver
 			Runnable fetchTask = new Runnable() {
 				@Override
 				public void run() {
-					String catalogURL = GrognakCatalogFetcher.CATALOG_URL;
-					boolean fetched = GrognakCatalogFetcher.fetchCatalog( catalogURL, catalogFile, catalogETagFile );
+					boolean fetched = URLFetcher.refetchURL( CATALOG_URL, catalogFile, catalogETagFile );
 
 					if ( fetched ) reloadCatalog();
 				}