diff --git a/gns3server/appliances/aruba-arubaoscx.gns3a b/gns3server/appliances/aruba-arubaoscx.gns3a
index 8a6ec603..39109f05 100644
--- a/gns3server/appliances/aruba-arubaoscx.gns3a
+++ b/gns3server/appliances/aruba-arubaoscx.gns3a
@@ -30,6 +30,13 @@
         "process_priority": "normal"
     },
     "images": [
+        {
+            "filename": "arubaoscx-disk-image-genericx86-p4-20220223012712.vmdk",
+            "version": "10.09.1000",
+            "md5sum": "7b47c4442d825562e73e3f09b2f1f999",
+            "filesize": 556828672,
+            "download_url": "https://asp.arubanetworks.com/"
+        },
         {
             "filename": "arubaoscx-disk-image-genericx86-p4-20211206170615.vmdk",
             "version": "10.09.0002",
@@ -81,6 +88,12 @@
         }
     ],
     "versions": [
+        {
+            "name": "10.09.1000",
+            "images": {
+                "hda_disk_image": "arubaoscx-disk-image-genericx86-p4-20220223012712.vmdk"
+            }
+        },
         {
             "name": "10.09.0002",
             "images": {
diff --git a/gns3server/appliances/cisco-asav.gns3a b/gns3server/appliances/cisco-asav.gns3a
index ccc0e57e..d74e0118 100644
--- a/gns3server/appliances/cisco-asav.gns3a
+++ b/gns3server/appliances/cisco-asav.gns3a
@@ -26,6 +26,13 @@
         "kvm": "require"
     },
     "images": [
+	    {
+            "filename": "asav9-16-2.qcow2",
+            "version": "9.16.2",
+            "md5sum": "c3aa2b73b029146ec345bf888dd54eab",
+            "filesize": 264896512,
+            "download_url": "https://software.cisco.com/download/home/286119613/type/280775065/release/9.16.2"
+        },
         {
             "filename": "asav9-15-1.qcow2",
             "version": "9.15.1",
@@ -105,6 +112,12 @@
         }
     ],
     "versions": [
+        {
+            "name": "9.16.2",
+            "images": {
+                "hda_disk_image": "asav9-16-2.qcow2"
+            }
+        },
         {
             "name": "9.15.1",
             "images": {
diff --git a/gns3server/appliances/cisco-iosv.gns3a b/gns3server/appliances/cisco-iosv.gns3a
index c6d6bce6..8cfd5dc9 100644
--- a/gns3server/appliances/cisco-iosv.gns3a
+++ b/gns3server/appliances/cisco-iosv.gns3a
@@ -32,6 +32,13 @@
             "download_url": "https://sourceforge.net/projects/gns-3/files",
             "direct_download_url": "https://sourceforge.net/projects/gns-3/files/Qemu%20Appliances/IOSv_startup_config.img/download"
         },
+        {
+            "filename": "vios-adventerprisek9-m.spa.159-3.m4.qcow2",
+            "version": "15.9(3)M4",
+            "md5sum": "355b13ab821e64e2939fd7008d6304d7",
+            "filesize": 57297920,
+            "download_url": "https://learningnetworkstore.cisco.com/myaccount"
+        },
         {
             "filename": "vios-adventerprisek9-m.spa.159-3.m3.qcow2",
             "version": "15.9(3)M3",
@@ -83,6 +90,13 @@
         }
     ],
     "versions": [
+        {
+            "name": "15.9(3)M4",
+            "images": {
+                "hda_disk_image": "vios-adventerprisek9-m.spa.159-3.m4.qcow2",
+                "hdb_disk_image": "IOSv_startup_config.img"
+            }
+        },
         {
             "name": "15.9(3)M3",
             "images": {
diff --git a/gns3server/appliances/clavister-netsheild.gns3a b/gns3server/appliances/clavister-netsheild.gns3a
new file mode 100644
index 00000000..f9ac0f11
--- /dev/null
+++ b/gns3server/appliances/clavister-netsheild.gns3a
@@ -0,0 +1,46 @@
+{
+    "appliance_id": "39c6b8db-8dc3-4b04-8727-7d0b414be7c8",
+    "name": "Clavister NetShield",
+    "category": "firewall",
+    "description": "Clavister NetShield (cOS Stream) Virtual Appliance offers the same functionality as the Clavister NetShield physical NGappliances FWs in a virtual environment.",
+    "vendor_name": "Clavister",
+    "vendor_url": "https://www.clavister.com/",
+    "documentation_url": "https://kb.clavister.com",
+    "product_name": "NetShield",
+    "product_url": "https://www.clavister.com/products/netshield/",
+    "registry_version": 4,
+    "status": "stable",
+    "availability": "free-to-try",
+    "maintainer": "Mattias Nordlund",
+    "maintainer_email": "mattias.nordlund@clavister.com",
+    "usage": "No configuration by default, oen console to set IPs and activate configuration.",
+    "port_name_format": "if{0}",
+    "qemu": {
+        "adapter_type": "virtio-net-pci",
+        "adapters": 4,
+        "ram": 1024,      
+        "hda_disk_interface": "virtio",
+        "arch": "x86_64",
+        "console_type": "telnet",
+        "boot_priority": "c",
+        "kvm": "allow",
+        "options": "-cpu Nehalem"
+    },
+    "images": [
+        {
+            "filename": "clavister-cos-stream-3.80.09.01-virtual-x64-generic.qcow2",
+            "version": "cOS Stream 3.80.09",
+            "md5sum": "b57d8e0f1a3cdd4b2c96ffbc7d7c4f05",
+            "filesize": 134217728,
+            "download_url": "https://my.clavister.com/download/c44639bf-b082-ec11-8308-005056956b6b"
+        }
+    ],
+    "versions": [
+        {
+            "images": {
+                "hda_disk_image": "clavister-cos-stream-3.80.09.01-virtual-x64-generic.qcow2"
+            },
+            "name": "cOS Stream 3.80.09"
+        }
+    ]
+}
diff --git a/gns3server/appliances/clavister-netwall.gns3a b/gns3server/appliances/clavister-netwall.gns3a
new file mode 100644
index 00000000..37d2e59e
--- /dev/null
+++ b/gns3server/appliances/clavister-netwall.gns3a
@@ -0,0 +1,58 @@
+{
+    "appliance_id": "68ddb1dc-e55b-4bcc-9c18-27a9eb5e7413",
+    "name": "Clavister NetWall",
+    "category": "firewall",
+    "description": "Clavister NetWall (cOS Core) Virtual Appliance offers the same functionality as the Clavister  NetWall physical NGFWs in a virtual environment.",
+    "vendor_name": "Clavister",
+    "vendor_url": "https://www.clavister.com/",
+    "documentation_url": "https://kb.clavister.com",
+    "product_name": "NetWall",
+    "product_url": "https://www.clavister.com/products/ngfw/",
+    "registry_version": 4,
+    "status": "stable",
+    "availability": "free-to-try",
+    "maintainer": "Mattias Nordlund",
+    "maintainer_email": "mattias.nordlund@clavister.com",
+    "usage": "DHCP enabled on all interfaces by default, WebUI/SSH access enabled on the local network connected to If1.",
+    "port_name_format": "If{0}",
+    "qemu": {
+        "adapter_type": "e1000",
+        "adapters": 4,
+        "ram": 512,
+        "hda_disk_interface": "virtio",
+        "arch": "x86_64",
+        "console_type": "telnet",
+        "boot_priority": "c",
+        "kvm": "allow"
+    },
+    "images": [
+        {
+            "filename": "clavister-cos-core-14.00.01.13-kvm-en.img",
+            "version": "cOS Core 14.00.01 (x86)",
+            "md5sum": "6c72eb0bb13d191912ca930b72071d07",
+            "filesize": 134217728,
+            "download_url": "https://my.clavister.com/download/ee3ecb2f-7662-ec11-8308-005056956b6b"
+        },
+        {
+            "filename": "clavister-cos-core-14.00.00.12-kvm-en.img",
+            "version": "cOS Core 14.00.00 (x86)",
+            "md5sum": "496ddd494b226e3508563db837643910",
+            "filesize": 134217728,
+            "download_url": "https://my.clavister.com/download/b2b7bce8-4449-ec11-8308-005056956b6b"
+        }
+    ],
+    "versions": [
+        {
+            "images": {
+                "hda_disk_image": "clavister-cos-core-14.00.01.13-kvm-en.img"
+            },
+            "name": "cOS Core 14.00.01 (x86)"
+        },
+        {
+            "images": {
+                "hda_disk_image": "clavister-cos-core-14.00.00.12-kvm-en.img"
+            },
+            "name": "cOS Core 14.00.00 (x86)"
+        }
+    ]
+}
diff --git a/gns3server/appliances/debian.gns3a b/gns3server/appliances/debian.gns3a
index 5da6d9fe..13f55861 100644
--- a/gns3server/appliances/debian.gns3a
+++ b/gns3server/appliances/debian.gns3a
@@ -24,20 +24,20 @@
     },
     "images": [
         {
-            "filename": "debian-11-genericcloud-amd64-20211220-862.qcow2",
-            "version": "11.2",
-            "md5sum": "3bdc52b0b3622a72095efdd001780a45",
-            "filesize": 253231104,
+            "filename": "debian-11-genericcloud-amd64-20220328-962.qcow2",
+            "version": "11.3",
+            "md5sum": "7cf51e23747898485971a656ac2eb96d",
+            "filesize": 253296640,
             "download_url": "https://cloud.debian.org/images/cloud/bullseye/",
-            "direct_download_url": "https://cloud.debian.org/images/cloud/bullseye/20211220-862/debian-11-genericcloud-amd64-20211220-862.qcow2"
+            "direct_download_url": "https://cloud.debian.org/images/cloud/bullseye/20220328-962/debian-11-genericcloud-amd64-20220328-962.qcow2"
         },
         {
-            "filename": "debian-10-genericcloud-amd64-20211011-792.qcow2",
-            "version": "10.11",
-            "md5sum": "ea4de19b17d114b6db813ee64a6b8284",
+            "filename": "debian-10-genericcloud-amd64-20220328-962.qcow2",
+            "version": "10.12",
+            "md5sum": "e92dfa1fc779fff807856f6ea6876e42",
             "filesize": 232980480,
             "download_url": "https://cloud.debian.org/images/cloud/buster/",
-            "direct_download_url": "https://cloud.debian.org/images/cloud/buster/20211011-792/debian-10-genericcloud-amd64-20211011-792.qcow2"
+            "direct_download_url": "https://cloud.debian.org/images/cloud/buster/20220328-962/debian-10-genericcloud-amd64-20220328-962.qcow2"
         },
         {
             "filename": "debian-cloud-init-data.iso",
@@ -49,16 +49,16 @@
     ],
     "versions": [
         {
-            "name": "11.2",
+            "name": "11.3",
             "images": {
-                "hda_disk_image": "debian-11-genericcloud-amd64-20211220-862.qcow2",
+                "hda_disk_image": "debian-11-genericcloud-amd64-20220328-962.qcow2",
                 "cdrom_image": "debian-cloud-init-data.iso"
             }
         },
         {
-            "name": "10.11",
+            "name": "10.12",
             "images": {
-                "hda_disk_image": "debian-10-genericcloud-amd64-20211011-792.qcow2",
+                "hda_disk_image": "debian-10-genericcloud-amd64-20220328-962.qcow2",
                 "cdrom_image": "debian-cloud-init-data.iso"
             }
         }
diff --git a/gns3server/appliances/frr.gns3a b/gns3server/appliances/frr.gns3a
index c05e42cb..a909c7a6 100644
--- a/gns3server/appliances/frr.gns3a
+++ b/gns3server/appliances/frr.gns3a
@@ -22,6 +22,14 @@
         "kvm": "allow"
     },
     "images": [
+        {
+            "filename": "frr-8.1.0.qcow2",
+            "version": "8.1.0",
+            "md5sum": "836d6a207f63f99a4039378f2b0c6123",
+            "filesize": 54063616,
+            "download_url": "https://sourceforge.net/projects/gns-3/files/Qemu%20Appliances/",
+            "direct_download_url": "http://downloads.sourceforge.net/project/gns-3/Qemu%20Appliances/frr-8.1.0.qcow2"
+        },
         {
             "filename": "frr-7.5.1.qcow2",
             "version": "7.5.1",
@@ -40,6 +48,12 @@
         }
     ],
     "versions": [
+        {
+            "name": "8.1.0",
+            "images": {
+                "hda_disk_image": "frr-8.1.0.qcow2"
+            }
+        },
         {
             "name": "7.5.1",
             "images": {
diff --git a/gns3server/appliances/opnsense.gns3a b/gns3server/appliances/opnsense.gns3a
index 8cab51b7..45583124 100644
--- a/gns3server/appliances/opnsense.gns3a
+++ b/gns3server/appliances/opnsense.gns3a
@@ -25,6 +25,13 @@
         "kvm": "require"
     },
     "images": [
+        {
+            "filename": "OPNsense-22.1.2-OpenSSL-nano-amd64.img",
+            "version": "22.1.2",
+            "md5sum": "3109030a214301b89a47eb9466e8b656",
+            "filesize": 3221225472,
+            "download_url": "https://opnsense.c0urier.net/releases/22.1/"
+        },
         {
             "filename": "OPNsense-21.7.1-OpenSSL-nano-amd64.img",
             "version": "21.7.1",
@@ -48,6 +55,12 @@
         }
     ],
     "versions": [
+        {
+            "name": "22.1.2",
+            "images": {
+                "hda_disk_image": "OPNsense-22.1.2-OpenSSL-nano-amd64.img"
+            }
+        },
         {
             "name": "21.7.1",
             "images": {
diff --git a/gns3server/appliances/ovs-snmp.gns3a b/gns3server/appliances/ovs-snmp.gns3a
new file mode 100644
index 00000000..2592022f
--- /dev/null
+++ b/gns3server/appliances/ovs-snmp.gns3a
@@ -0,0 +1,18 @@
+{
+    "appliance_id": "bfafb392-bb2b-4078-8817-29c55273fff6",
+    "name": "Open vSwitch with SNMP",
+    "category": "multilayer_switch",
+    "description": "Customized Open vSwtich with SNMP support",
+    "vendor_name": "Open vSwitch",
+    "vendor_url": "http://openvswitch.org/",
+    "product_name": "Open vSwitch",
+    "registry_version": 3,
+    "status": "stable",
+    "maintainer": "GNS3 Team",
+    "maintainer_email": "developers@gns3.net",
+    "usage": "",
+    "docker": {
+        "adapters": 8,
+        "image": "gns3/ovs-snmp:latest"
+    }
+}
\ No newline at end of file
diff --git a/gns3server/appliances/pfsense.gns3a b/gns3server/appliances/pfsense.gns3a
index ff640bfb..bf3cf1ae 100644
--- a/gns3server/appliances/pfsense.gns3a
+++ b/gns3server/appliances/pfsense.gns3a
@@ -24,6 +24,13 @@
         "process_priority": "normal"
     },
     "images": [
+        {
+            "filename": "pfSense-CE-2.6.0-RELEASE-amd64.iso",
+            "version": "2.6.0",
+            "md5sum": "5ca6d4cb89977022d2e76c9158eeeb67",
+            "filesize": 767463424,
+            "download_url": "https://www.pfsense.org/download/mirror.php?section=downloads"
+        },
         {
             "filename": "pfSense-CE-2.5.2-RELEASE-amd64.iso",
             "version": "2.5.2",
@@ -62,6 +69,13 @@
         }
     ],
     "versions": [
+        {
+            "name": "2.6.0",
+            "images": {
+                "hda_disk_image": "empty100G.qcow2",
+                "cdrom_image": "pfSense-CE-2.6.0-RELEASE-amd64.iso"
+            }
+        },
         {
             "name": "2.5.2",
             "images": {
diff --git a/gns3server/appliances/sophos-xg.gns3a b/gns3server/appliances/sophos-xg.gns3a
index 24f94f88..54496c71 100644
--- a/gns3server/appliances/sophos-xg.gns3a
+++ b/gns3server/appliances/sophos-xg.gns3a
@@ -24,6 +24,20 @@
         "kvm": "require"
     },
     "images": [
+        {
+            "filename": "VI-18.5.2_MR-2.KVM-380-PRIMARY.qcow2",
+            "version": "18.5.2 MR2",
+            "md5sum": "d3b99cd9519fae06e4ef348af34fef2b",
+            "filesize": 458555392,
+            "download_url": "https://secure2.sophos.com/en-us/products/next-gen-firewall/free-trial.aspx"
+        },
+        {
+            "filename": "VI-18.5.2_MR-2.KVM-380-AUXILIARY.qcow2",
+            "version": "18.5.2 MR2",
+            "md5sum": "9cf2ebc15c92f712e28f8e45a29ee613",
+            "filesize": 11272192,
+            "download_url": "https://secure2.sophos.com/en-us/products/next-gen-firewall/free-trial.aspx"
+        },
         {
             "filename": "VI-17.1.3_MR-3.KVM-250-PRIMARY.qcow2",
             "version": "17.1.3 MR3",
@@ -124,6 +138,13 @@
         }
     ],
     "versions": [
+        {
+            "name": "18.5.2 MR2",
+            "images": {
+                "hda_disk_image": "VI-18.5.2_MR-2.KVM-380-PRIMARY.qcow2",
+                "hdb_disk_image": "VI-18.5.2_MR-2.KVM-380-AUXILIARY.qcow2"
+            }
+        },
         {
             "name": "17.1.3 MR3",
             "images": {
diff --git a/gns3server/appliances/vyos.gns3a b/gns3server/appliances/vyos.gns3a
index 29517c7d..4004a1bc 100644
--- a/gns3server/appliances/vyos.gns3a
+++ b/gns3server/appliances/vyos.gns3a
@@ -26,6 +26,13 @@
         "kvm": "allow"
     },
     "images": [
+        {
+            "filename": "vyos-1.3.1-amd64.iso",
+            "version": "1.3.1",
+            "md5sum": "b6f57bd0cf9b60cdafa337b08ba4f2bc",
+            "filesize": 350224384,
+            "download_url": "https://support.vyos.io/en/downloads/files/vyos-1-3-1-generic-iso-image"
+        },
         {
             "filename": "vyos-1.3.0-amd64.iso",
             "version": "1.3.0",
@@ -73,6 +80,13 @@
         }
     ],
     "versions": [
+        {
+            "name": "1.3.1",
+            "images": {
+                "hda_disk_image": "empty8G.qcow2",
+                "cdrom_image": "vyos-1.3.1-amd64.iso"
+            }
+        },
         {
             "name": "1.3.0",
             "images": {