diff --git a/autogen.sh b/autogen.sh
index 766881bc..b5dc831d 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -4,7 +4,7 @@ set -e
 app_root_dir="diagrams"
 
 # NOTE: azure icon set is not latest version
-providers=("onprem" "aws" "azure" "gcp" "k8s" "alibabacloud" "oci" "programming")
+providers=("onprem" "aws" "azure" "gcp" "firebase" "k8s" "alibabacloud" "oci" "programming" "saas")
 
 if ! [ -x "$(command -v round)" ]; then
   echo 'round is not installed'
diff --git a/config.py b/config.py
index 4a5c138d..275baaab 100644
--- a/config.py
+++ b/config.py
@@ -11,7 +11,7 @@ DIR_APP_ROOT = "diagrams"
 DIR_RESOURCE = "resources"
 DIR_TEMPLATE = "templates"
 
-PROVIDERS = ("base", "onprem", "aws", "azure", "gcp", "k8s", "alibabacloud", "oci", "programming")
+PROVIDERS = ("base", "onprem", "aws", "azure", "gcp", "firebase", "k8s", "alibabacloud", "oci", "programming", "saas")
 
 #########################
 #  Resource Processing  #
@@ -29,10 +29,12 @@ FILE_PREFIXES = {
     "aws": ("Amazon-", "AWS-"),
     "azure": ("Azure-",),
     "gcp": ("Cloud-",),
+    "firebase": ("Cloud-",),
     "k8s": (),
     "alibabacloud": (),
     "oci": ("OCI-",),
     "programming": (),
+    "saas": (),
 }
 
 #########################
@@ -51,6 +53,7 @@ UPPER_WORDS = {
     "aws": ("aws", "api", "ebs", "ec2", "efs", "emr", "rds", "ml", "mq", "nat", "vpc", "waf", "sdk"),
     "azure": ("ad", "b2c", "ai", "api", "cdn", "ddos", "dns", "fxt", "hana", "hd", "id", "sap", "sql", "vm"),
     "gcp": ("gcp", "ai", "api", "cdn", "dns", "gke", "gpu", "iap", "ml", "nat", "os", "sdk", "sql", "tpu", "vpn"),
+    "firebase": ("ab", "fcm", "ml"),
     "k8s": (
         "api", "cm", "ccm", "crb", "crd", "ds", "etcd", "hpa", "k8s", "ns", "psp", "pv", "pvc", "rb", "rs",
         "sa", "sc", "sts", "svc",
@@ -78,6 +81,7 @@ ALIASES = {
             "Gitlabci": "GitlabCI",
             "Travisci": "TravisCI",
             "Teamcity": "TC",
+            "Zuulci": "ZuulCI",
         },
         "container": {
             "Rkt": "RKT",
@@ -233,6 +237,11 @@ ALIASES = {
             "Storage": "GCS",
         },
     },
+    "firebase": {
+        "grow": {
+            "Messaging": "FCM"
+        }
+    },
     "k8s": {
         "clusterconfig": {
             "Limits": "LimitRange",
@@ -346,4 +355,5 @@ ALIASES = {
             "Typescript": "TypeScript"
         },
     },
+    "saas": {},
 }
diff --git a/diagrams/firebase/base.py b/diagrams/firebase/base.py
new file mode 100644
index 00000000..a7c9531c
--- /dev/null
+++ b/diagrams/firebase/base.py
@@ -0,0 +1,15 @@
+# This module is automatically generated by autogen.sh. DO NOT EDIT.
+
+from . import _Firebase
+
+
+class _Base(_Firebase):
+    _type = "base"
+    _icon_dir = "resources/firebase/base"
+
+
+class Firebase(_Base):
+    _icon = "firebase.png"
+
+
+# Aliases
diff --git a/diagrams/firebase/develop.py b/diagrams/firebase/develop.py
new file mode 100644
index 00000000..27426e51
--- /dev/null
+++ b/diagrams/firebase/develop.py
@@ -0,0 +1,39 @@
+# This module is automatically generated by autogen.sh. DO NOT EDIT.
+
+from . import _Firebase
+
+
+class _Develop(_Firebase):
+    _type = "develop"
+    _icon_dir = "resources/firebase/develop"
+
+
+class Authentication(_Develop):
+    _icon = "authentication.png"
+
+
+class Firestore(_Develop):
+    _icon = "firestore.png"
+
+
+class Functions(_Develop):
+    _icon = "functions.png"
+
+
+class Hosting(_Develop):
+    _icon = "hosting.png"
+
+
+class MLKit(_Develop):
+    _icon = "ml-kit.png"
+
+
+class RealtimeDatabase(_Develop):
+    _icon = "realtime-database.png"
+
+
+class Storage(_Develop):
+    _icon = "storage.png"
+
+
+# Aliases
diff --git a/diagrams/firebase/extentions.py b/diagrams/firebase/extentions.py
new file mode 100644
index 00000000..9d5926c2
--- /dev/null
+++ b/diagrams/firebase/extentions.py
@@ -0,0 +1,15 @@
+# This module is automatically generated by autogen.sh. DO NOT EDIT.
+
+from . import _Firebase
+
+
+class _Extentions(_Firebase):
+    _type = "extentions"
+    _icon_dir = "resources/firebase/extentions"
+
+
+class Extensions(_Extentions):
+    _icon = "extensions.png"
+
+
+# Aliases
diff --git a/diagrams/firebase/grow.py b/diagrams/firebase/grow.py
new file mode 100644
index 00000000..b015dd3f
--- /dev/null
+++ b/diagrams/firebase/grow.py
@@ -0,0 +1,45 @@
+# This module is automatically generated by autogen.sh. DO NOT EDIT.
+
+from . import _Firebase
+
+
+class _Grow(_Firebase):
+    _type = "grow"
+    _icon_dir = "resources/firebase/grow"
+
+
+class ABTesting(_Grow):
+    _icon = "ab-testing.png"
+
+
+class AppIndexing(_Grow):
+    _icon = "app-indexing.png"
+
+
+class DynamicLinks(_Grow):
+    _icon = "dynamic-links.png"
+
+
+class InAppMessaging(_Grow):
+    _icon = "in-app-messaging.png"
+
+
+class Invites(_Grow):
+    _icon = "invites.png"
+
+
+class Messaging(_Grow):
+    _icon = "messaging.png"
+
+
+class Predictions(_Grow):
+    _icon = "predictions.png"
+
+
+class RemoteConfig(_Grow):
+    _icon = "remote-config.png"
+
+
+# Aliases
+
+FCM = Messaging
diff --git a/diagrams/firebase/quality.py b/diagrams/firebase/quality.py
new file mode 100644
index 00000000..227a4c35
--- /dev/null
+++ b/diagrams/firebase/quality.py
@@ -0,0 +1,31 @@
+# This module is automatically generated by autogen.sh. DO NOT EDIT.
+
+from . import _Firebase
+
+
+class _Quality(_Firebase):
+    _type = "quality"
+    _icon_dir = "resources/firebase/quality"
+
+
+class AppDistribution(_Quality):
+    _icon = "app-distribution.png"
+
+
+class CrashReporting(_Quality):
+    _icon = "crash-reporting.png"
+
+
+class Crashlytics(_Quality):
+    _icon = "crashlytics.png"
+
+
+class PerformanceMonitoring(_Quality):
+    _icon = "performance-monitoring.png"
+
+
+class TestLab(_Quality):
+    _icon = "test-lab.png"
+
+
+# Aliases
diff --git a/diagrams/onprem/ci.py b/diagrams/onprem/ci.py
index fb7b42b0..896e5de6 100644
--- a/diagrams/onprem/ci.py
+++ b/diagrams/onprem/ci.py
@@ -28,9 +28,14 @@ class Travisci(_Ci):
     _icon = "travisci.png"
 
 
+class Zuulci(_Ci):
+    _icon = "zuulci.png"
+
+
 # Aliases
 
 CircleCI = Circleci
 GitlabCI = Gitlabci
 TravisCI = Travisci
 TC = Teamcity
+ZuulCI = Zuulci
diff --git a/diagrams/saas/__init__.py b/diagrams/saas/__init__.py
new file mode 100644
index 00000000..ecae1d80
--- /dev/null
+++ b/diagrams/saas/__init__.py
@@ -0,0 +1,12 @@
+"""
+Saas provides a set of general saas services.
+"""
+
+from diagrams import Node
+
+
+class _Saas(Node):
+    _provider = "saas"
+    _icon_dir = "resources/saas"
+
+    fontcolor = "#ffffff"
diff --git a/diagrams/saas/chat.py b/diagrams/saas/chat.py
new file mode 100644
index 00000000..ebdf0532
--- /dev/null
+++ b/diagrams/saas/chat.py
@@ -0,0 +1,19 @@
+# This module is automatically generated by autogen.sh. DO NOT EDIT.
+
+from . import _Saas
+
+
+class _Chat(_Saas):
+    _type = "chat"
+    _icon_dir = "resources/saas/chat"
+
+
+class Slack(_Chat):
+    _icon = "slack.png"
+
+
+class Telegram(_Chat):
+    _icon = "telegram.png"
+
+
+# Aliases
diff --git a/diagrams/saas/social.py b/diagrams/saas/social.py
new file mode 100644
index 00000000..6ad326db
--- /dev/null
+++ b/diagrams/saas/social.py
@@ -0,0 +1,19 @@
+# This module is automatically generated by autogen.sh. DO NOT EDIT.
+
+from . import _Saas
+
+
+class _Social(_Saas):
+    _type = "social"
+    _icon_dir = "resources/saas/social"
+
+
+class Facebook(_Social):
+    _icon = "facebook.png"
+
+
+class Twitter(_Social):
+    _icon = "twitter.png"
+
+
+# Aliases
diff --git a/docs/nodes/azure.md b/docs/nodes/azure.md
index 2613819f..076b18d8 100644
--- a/docs/nodes/azure.md
+++ b/docs/nodes/azure.md
@@ -5,6 +5,43 @@ title: Azure
 
 Node classes list of azure provider.
 
+## azure.analytics
+
+- **diagrams.azure.analytics.AnalysisServices**
+- **diagrams.azure.analytics.DataExplorerClusters**
+- **diagrams.azure.analytics.DataFactories**
+- **diagrams.azure.analytics.DataLakeAnalytics**
+- **diagrams.azure.analytics.DataLakeStoreGen1**
+- **diagrams.azure.analytics.Databricks**
+- **diagrams.azure.analytics.EventHubClusters**
+- **diagrams.azure.analytics.EventHubs**
+- **diagrams.azure.analytics.Hdinsightclusters**
+- **diagrams.azure.analytics.LogAnalyticsWorkspaces**
+- **diagrams.azure.analytics.StreamAnalyticsJobs**
+
+## azure.compute
+
+- **diagrams.azure.compute.AvailabilitySets**
+- **diagrams.azure.compute.BatchAccounts**
+- **diagrams.azure.compute.CitrixVirtualDesktopsEssentials**
+- **diagrams.azure.compute.CloudServicesClassic**
+- **diagrams.azure.compute.CloudServices**
+- **diagrams.azure.compute.CloudsimpleVirtualMachines**
+- **diagrams.azure.compute.ContainerInstances**
+- **diagrams.azure.compute.ContainerRegistries**, **ACR** (alias)
+- **diagrams.azure.compute.DiskSnapshots**
+- **diagrams.azure.compute.Disks**
+- **diagrams.azure.compute.FunctionApps**
+- **diagrams.azure.compute.KubernetesServices**, **AKS** (alias)
+- **diagrams.azure.compute.MeshApplications**
+- **diagrams.azure.compute.SAPHANAOnAzure**
+- **diagrams.azure.compute.ServiceFabricClusters**
+- **diagrams.azure.compute.VMClassic**
+- **diagrams.azure.compute.VMImages**
+- **diagrams.azure.compute.VMLinux**
+- **diagrams.azure.compute.VMWindows**
+- **diagrams.azure.compute.VM**
+
 ## azure.database
 
 - **diagrams.azure.database.BlobStorage**
@@ -36,28 +73,6 @@ Node classes list of azure provider.
 - **diagrams.azure.devops.Repos**
 - **diagrams.azure.devops.TestPlans**
 
-## azure.identity
-
-- **diagrams.azure.identity.AccessReview**
-- **diagrams.azure.identity.ActiveDirectoryConnectHealth**
-- **diagrams.azure.identity.ActiveDirectory**
-- **diagrams.azure.identity.ADB2C**
-- **diagrams.azure.identity.ADDomainServices**
-- **diagrams.azure.identity.ADIdentityProtection**
-- **diagrams.azure.identity.ADPrivilegedIdentityManagement**
-- **diagrams.azure.identity.AppRegistrations**
-- **diagrams.azure.identity.ConditionalAccess**
-- **diagrams.azure.identity.EnterpriseApplications**
-- **diagrams.azure.identity.IdentityGovernance**
-- **diagrams.azure.identity.InformationProtection**
-- **diagrams.azure.identity.ManagedIdentities**
-
-## azure.security
-
-- **diagrams.azure.security.KeyVaults**
-- **diagrams.azure.security.SecurityCenter**
-- **diagrams.azure.security.Sentinel**
-
 ## azure.general
 
 - **diagrams.azure.general.Allresources**
@@ -87,18 +102,21 @@ Node classes list of azure provider.
 - **diagrams.azure.general.Userresource**
 - **diagrams.azure.general.Whatsnew**
 
-## azure.web
+## azure.identity
 
-- **diagrams.azure.web.APIConnections**
-- **diagrams.azure.web.AppServiceCertificates**
-- **diagrams.azure.web.AppServiceDomains**
-- **diagrams.azure.web.AppServiceEnvironments**
-- **diagrams.azure.web.AppServicePlans**
-- **diagrams.azure.web.AppServices**
-- **diagrams.azure.web.MediaServices**
-- **diagrams.azure.web.NotificationHubNamespaces**
-- **diagrams.azure.web.Search**
-- **diagrams.azure.web.Signalr**
+- **diagrams.azure.identity.AccessReview**
+- **diagrams.azure.identity.ActiveDirectoryConnectHealth**
+- **diagrams.azure.identity.ActiveDirectory**
+- **diagrams.azure.identity.ADB2C**
+- **diagrams.azure.identity.ADDomainServices**
+- **diagrams.azure.identity.ADIdentityProtection**
+- **diagrams.azure.identity.ADPrivilegedIdentityManagement**
+- **diagrams.azure.identity.AppRegistrations**
+- **diagrams.azure.identity.ConditionalAccess**
+- **diagrams.azure.identity.EnterpriseApplications**
+- **diagrams.azure.identity.IdentityGovernance**
+- **diagrams.azure.identity.InformationProtection**
+- **diagrams.azure.identity.ManagedIdentities**
 
 ## azure.integration
 
@@ -120,6 +138,42 @@ Node classes list of azure provider.
 - **diagrams.azure.integration.SoftwareAsAService**
 - **diagrams.azure.integration.StorsimpleDeviceManagers**
 
+## azure.iot
+
+- **diagrams.azure.iot.DeviceProvisioningServices**
+- **diagrams.azure.iot.DigitalTwins**
+- **diagrams.azure.iot.IotCentralApplications**
+- **diagrams.azure.iot.IotHubSecurity**
+- **diagrams.azure.iot.IotHub**
+- **diagrams.azure.iot.Maps**
+- **diagrams.azure.iot.Sphere**
+- **diagrams.azure.iot.TimeSeriesInsightsEnvironments**
+- **diagrams.azure.iot.TimeSeriesInsightsEventsSources**
+- **diagrams.azure.iot.Windows10IotCoreServices**
+
+## azure.migration
+
+- **diagrams.azure.migration.DatabaseMigrationServices**
+- **diagrams.azure.migration.MigrationProjects**
+- **diagrams.azure.migration.RecoveryServicesVaults**
+
+## azure.ml
+
+- **diagrams.azure.ml.BatchAI**
+- **diagrams.azure.ml.BotServices**
+- **diagrams.azure.ml.CognitiveServices**
+- **diagrams.azure.ml.GenomicsAccounts**
+- **diagrams.azure.ml.MachineLearningServiceWorkspaces**
+- **diagrams.azure.ml.MachineLearningStudioWebServicePlans**
+- **diagrams.azure.ml.MachineLearningStudioWebServices**
+- **diagrams.azure.ml.MachineLearningStudioWorkspaces**
+
+## azure.mobile
+
+- **diagrams.azure.mobile.AppServiceMobile**
+- **diagrams.azure.mobile.MobileEngagement**
+- **diagrams.azure.mobile.NotificationHubs**
+
 ## azure.network
 
 - **diagrams.azure.network.ApplicationGateway**
@@ -149,6 +203,12 @@ Node classes list of azure provider.
 - **diagrams.azure.network.VirtualNetworks**
 - **diagrams.azure.network.VirtualWans**
 
+## azure.security
+
+- **diagrams.azure.security.KeyVaults**
+- **diagrams.azure.security.SecurityCenter**
+- **diagrams.azure.security.Sentinel**
+
 ## azure.storage
 
 - **diagrams.azure.storage.ArchiveStorage**
@@ -168,75 +228,15 @@ Node classes list of azure provider.
 - **diagrams.azure.storage.StorsimpleDeviceManagers**
 - **diagrams.azure.storage.TableStorage**
 
-## azure.iot
-
-- **diagrams.azure.iot.DeviceProvisioningServices**
-- **diagrams.azure.iot.DigitalTwins**
-- **diagrams.azure.iot.IotCentralApplications**
-- **diagrams.azure.iot.IotHubSecurity**
-- **diagrams.azure.iot.IotHub**
-- **diagrams.azure.iot.Maps**
-- **diagrams.azure.iot.Sphere**
-- **diagrams.azure.iot.TimeSeriesInsightsEnvironments**
-- **diagrams.azure.iot.TimeSeriesInsightsEventsSources**
-- **diagrams.azure.iot.Windows10IotCoreServices**
-
-## azure.compute
-
-- **diagrams.azure.compute.AvailabilitySets**
-- **diagrams.azure.compute.BatchAccounts**
-- **diagrams.azure.compute.CitrixVirtualDesktopsEssentials**
-- **diagrams.azure.compute.CloudServicesClassic**
-- **diagrams.azure.compute.CloudServices**
-- **diagrams.azure.compute.CloudsimpleVirtualMachines**
-- **diagrams.azure.compute.ContainerInstances**
-- **diagrams.azure.compute.ContainerRegistries**, **ACR** (alias)
-- **diagrams.azure.compute.DiskSnapshots**
-- **diagrams.azure.compute.Disks**
-- **diagrams.azure.compute.FunctionApps**
-- **diagrams.azure.compute.KubernetesServices**, **AKS** (alias)
-- **diagrams.azure.compute.MeshApplications**
-- **diagrams.azure.compute.SAPHANAOnAzure**
-- **diagrams.azure.compute.ServiceFabricClusters**
-- **diagrams.azure.compute.VMClassic**
-- **diagrams.azure.compute.VMImages**
-- **diagrams.azure.compute.VMLinux**
-- **diagrams.azure.compute.VMWindows**
-- **diagrams.azure.compute.VM**
-
-## azure.ml
-
-- **diagrams.azure.ml.BatchAI**
-- **diagrams.azure.ml.BotServices**
-- **diagrams.azure.ml.CognitiveServices**
-- **diagrams.azure.ml.GenomicsAccounts**
-- **diagrams.azure.ml.MachineLearningServiceWorkspaces**
-- **diagrams.azure.ml.MachineLearningStudioWebServicePlans**
-- **diagrams.azure.ml.MachineLearningStudioWebServices**
-- **diagrams.azure.ml.MachineLearningStudioWorkspaces**
-
-## azure.mobile
-
-- **diagrams.azure.mobile.AppServiceMobile**
-- **diagrams.azure.mobile.MobileEngagement**
-- **diagrams.azure.mobile.NotificationHubs**
-
-## azure.migration
-
-- **diagrams.azure.migration.DatabaseMigrationServices**
-- **diagrams.azure.migration.MigrationProjects**
-- **diagrams.azure.migration.RecoveryServicesVaults**
-
-## azure.analytics
+## azure.web
 
-- **diagrams.azure.analytics.AnalysisServices**
-- **diagrams.azure.analytics.DataExplorerClusters**
-- **diagrams.azure.analytics.DataFactories**
-- **diagrams.azure.analytics.DataLakeAnalytics**
-- **diagrams.azure.analytics.DataLakeStoreGen1**
-- **diagrams.azure.analytics.Databricks**
-- **diagrams.azure.analytics.EventHubClusters**
-- **diagrams.azure.analytics.EventHubs**
-- **diagrams.azure.analytics.Hdinsightclusters**
-- **diagrams.azure.analytics.LogAnalyticsWorkspaces**
-- **diagrams.azure.analytics.StreamAnalyticsJobs**
+- **diagrams.azure.web.APIConnections**
+- **diagrams.azure.web.AppServiceCertificates**
+- **diagrams.azure.web.AppServiceDomains**
+- **diagrams.azure.web.AppServiceEnvironments**
+- **diagrams.azure.web.AppServicePlans**
+- **diagrams.azure.web.AppServices**
+- **diagrams.azure.web.MediaServices**
+- **diagrams.azure.web.NotificationHubNamespaces**
+- **diagrams.azure.web.Search**
+- **diagrams.azure.web.Signalr**
diff --git a/docs/nodes/firebase.md b/docs/nodes/firebase.md
new file mode 100644
index 00000000..f49a5c9c
--- /dev/null
+++ b/docs/nodes/firebase.md
@@ -0,0 +1,43 @@
+---
+id: firebase
+title: Firebase
+---
+
+Node classes list of firebase provider.
+
+## firebase.base
+
+- **diagrams.firebase.base.Firebase**
+
+## firebase.develop
+
+- **diagrams.firebase.develop.Authentication**
+- **diagrams.firebase.develop.Firestore**
+- **diagrams.firebase.develop.Functions**
+- **diagrams.firebase.develop.Hosting**
+- **diagrams.firebase.develop.MLKit**
+- **diagrams.firebase.develop.RealtimeDatabase**
+- **diagrams.firebase.develop.Storage**
+
+## firebase.extentions
+
+- **diagrams.firebase.extentions.Extensions**
+
+## firebase.grow
+
+- **diagrams.firebase.grow.ABTesting**
+- **diagrams.firebase.grow.AppIndexing**
+- **diagrams.firebase.grow.DynamicLinks**
+- **diagrams.firebase.grow.InAppMessaging**
+- **diagrams.firebase.grow.Invites**
+- **diagrams.firebase.grow.Messaging**, **FCM** (alias)
+- **diagrams.firebase.grow.Predictions**
+- **diagrams.firebase.grow.RemoteConfig**
+
+## firebase.quality
+
+- **diagrams.firebase.quality.AppDistribution**
+- **diagrams.firebase.quality.CrashReporting**
+- **diagrams.firebase.quality.Crashlytics**
+- **diagrams.firebase.quality.PerformanceMonitoring**
+- **diagrams.firebase.quality.TestLab**
diff --git a/docs/nodes/onprem.md b/docs/nodes/onprem.md
index 1b403703..1100283b 100644
--- a/docs/nodes/onprem.md
+++ b/docs/nodes/onprem.md
@@ -5,6 +5,47 @@ title: OnPrem
 
 Node classes list of onprem provider.
 
+## onprem.analytics
+
+- **diagrams.onprem.analytics.Beam**
+- **diagrams.onprem.analytics.Flink**
+- **diagrams.onprem.analytics.Hadoop**
+- **diagrams.onprem.analytics.Hive**
+- **diagrams.onprem.analytics.Metabase**
+- **diagrams.onprem.analytics.Norikra**
+- **diagrams.onprem.analytics.Spark**
+- **diagrams.onprem.analytics.Storm**
+- **diagrams.onprem.analytics.Tableau**
+
+## onprem.cd
+
+- **diagrams.onprem.cd.Spinnaker**
+
+## onprem.ci
+
+- **diagrams.onprem.ci.Circleci**, **CircleCI** (alias)
+- **diagrams.onprem.ci.Gitlabci**, **GitlabCI** (alias)
+- **diagrams.onprem.ci.Jenkins**
+- **diagrams.onprem.ci.Teamcity**, **TC** (alias)
+- **diagrams.onprem.ci.Travisci**, **TravisCI** (alias)
+- **diagrams.onprem.ci.Zuulci**, **ZuulCI** (alias)
+
+## onprem.client
+
+- **diagrams.onprem.client.Client**
+- **diagrams.onprem.client.User**
+- **diagrams.onprem.client.Users**
+
+## onprem.compute
+
+- **diagrams.onprem.compute.Nomad**
+- **diagrams.onprem.compute.Server**
+
+## onprem.container
+
+- **diagrams.onprem.container.Docker**
+- **diagrams.onprem.container.Rkt**, **RKT** (alias)
+
 ## onprem.database
 
 - **diagrams.onprem.database.Cassandra**
diff --git a/docs/nodes/saas.md b/docs/nodes/saas.md
new file mode 100644
index 00000000..4e7ae882
--- /dev/null
+++ b/docs/nodes/saas.md
@@ -0,0 +1,16 @@
+---
+id: saas
+title: Saas
+---
+
+Node classes list of saas provider.
+
+## saas.chat
+
+- **diagrams.saas.chat.Slack**
+- **diagrams.saas.chat.Telegram**
+
+## saas.social
+
+- **diagrams.saas.social.Facebook**
+- **diagrams.saas.social.Twitter**
diff --git a/resources/baas/firebase/firebase.png b/resources/firebase/base/firebase.png
similarity index 100%
rename from resources/baas/firebase/firebase.png
rename to resources/firebase/base/firebase.png
diff --git a/resources/baas/firebase/authentication.png b/resources/firebase/develop/authentication.png
similarity index 100%
rename from resources/baas/firebase/authentication.png
rename to resources/firebase/develop/authentication.png
diff --git a/resources/baas/firebase/cloud-firestore.png b/resources/firebase/develop/firestore.png
similarity index 100%
rename from resources/baas/firebase/cloud-firestore.png
rename to resources/firebase/develop/firestore.png
diff --git a/resources/baas/firebase/cloud-functions.png b/resources/firebase/develop/functions.png
similarity index 100%
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diff --git a/scripts/generate.py b/scripts/generate.py
index 7ec0a879..a7e04b78 100644
--- a/scripts/generate.py
+++ b/scripts/generate.py
@@ -7,7 +7,7 @@ from jinja2 import Environment, FileSystemLoader, Template
 import config as cfg
 from . import app_root_dir, doc_root_dir, resource_dir, template_dir
 
-_usage = "Usage: generate.py <onprem|aws|gcp|azure|k8s|alibabacloud|oci|programming>"
+_usage = "Usage: generate.py <onprem|aws|gcp|azure|k8s|alibabacloud|oci|programming|saas>"
 
 
 def load_tmpl(tmpl: str) -> Template:
@@ -50,7 +50,7 @@ def gen_apidoc(pvd: str, typ_paths: dict) -> str:
         return name
 
     typ_classes = {}
-    for typ, paths in typ_paths.items():
+    for typ, paths in sorted(typ_paths.items()):
         typ_classes[typ] = []
         for name in map(_gen_class_name, paths):
             alias = cfg.ALIASES[pvd].get(typ, {}).get(name)
diff --git a/scripts/resource.py b/scripts/resource.py
index 10575af1..41e44130 100644
--- a/scripts/resource.py
+++ b/scripts/resource.py
@@ -53,6 +53,16 @@ def cleaner_gcp(f):
     return f.lower()
 
 
+def cleaner_firebase(f):
+    f = f.replace("_", "-")
+    f = "-".join(f.split())
+    for p in cfg.FILE_PREFIXES["firebase"]:
+        if f.startswith(p):
+            f = f[len(p) :]
+            break
+    return f.lower()
+
+
 def cleaner_k8s(f):
     f = f.replace("-256", "")
     for p in cfg.FILE_PREFIXES["k8s"]:
@@ -84,15 +94,21 @@ def cleaner_programming(f):
     return f.lower()
 
 
+def cleaner_saas(f):
+    return f.lower()
+
+
 cleaners = {
     "onprem": cleaner_onprem,
     "aws": cleaner_aws,
     "azure": cleaner_azure,
     "gcp": cleaner_gcp,
+    "firebase": cleaner_firebase,
     "k8s": cleaner_k8s,
     "alibabacloud": cleaner_alibabacloud,
     "oci": cleaner_oci,
     "programming": cleaner_programming,
+    "saas": cleaner_saas,
 }