Add missing plugins.

Signed-off-by: Volker Theile <votdev@gmx.de>

plugins.rst

@@ -3,7 +3,7 @@ Plugins
 
 You can add more features & apps by simply selecting the software you need, we
 call this plugins. Plugins are possible due to the modular design of |omv| and
-are the prefered way to extend your NAS. It is still possible to install regular
+are the preferred way to extend your NAS. It is still possible to install regular
 software or containerized software like Docker. Plugins only exist for your
 convenience.
 
@@ -32,6 +32,11 @@ The following is the list of official plugins by |omv|.
 * **SNMP**: Provides Simple Network Management Protocol (SNMP). SNMP is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks.
 * **TFtp**: Provides Trivial File Transfer Protocol (TFTP). TFTP is a simple lockstep File Transfer Protocol which allows a client to get a file from or put a file onto a remote host.
 * **USB Backup**: Backup internal data to external disks on scheduled basis or on plug drive event.
+* **FileBrowser**: File managing interface.
+* **PhotoPrism**: AI-powered app for browsing, organizing & sharing your photo collection.
+* **WeTTY**: Terminal access in browser over HTTP/HTTPS.
+* **S3**: MinIO based high-performance, S3 compatible object storage.
+* **Onedrive**: Synchronizing a shared folder with Microsoft OneDrive cloud storage.
 
 .. _plugin_3rd_party: