diff --git a/nixos/modules/services/web-apps/atlassian/confluence.nix b/nixos/modules/services/web-apps/atlassian/confluence.nix
index c1d7d4ea06d..33ba444d097 100644
--- a/nixos/modules/services/web-apps/atlassian/confluence.nix
+++ b/nixos/modules/services/web-apps/atlassian/confluence.nix
@@ -6,7 +6,22 @@ let
 
   cfg = config.services.confluence;
 
-  pkg = pkgs.atlassian-confluence;
+  pkg = pkgs.atlassian-confluence.override {
+    enableSSO = cfg.sso.enable;
+    crowdProperties = ''
+      application.name                        ${cfg.sso.applicationName}
+      application.password                    ${cfg.sso.applicationPassword}
+      application.login.url                   ${cfg.sso.crowd}/console/
+
+      crowd.server.url                        ${cfg.sso.crowd}/services/
+      crowd.base.url                          ${cfg.sso.crowd}/
+
+      session.isauthenticated                 session.isauthenticated
+      session.tokenkey                        session.tokenkey
+      session.validationinterval              ${toString cfg.sso.validationInterval}
+      session.lastvalidation                  session.lastvalidation
+    '';
+  };
 
 in
 
@@ -76,6 +91,42 @@ in
         };
       };
 
+      sso = {
+        enable = mkEnableOption "SSO with Atlassian Crowd";
+
+        crowd = mkOption {
+          type = types.str;
+          example = "http://localhost:8095/crowd";
+          description = "Crowd Base URL without trailing slash";
+        };
+
+        applicationName = mkOption {
+          type = types.str;
+          example = "jira";
+          description = "Exact name of this Confluence instance in Crowd";
+        };
+
+        applicationPassword = mkOption {
+          type = types.str;
+          description = "Application password of this Confluence instance in Crowd";
+        };
+
+        validationInterval = mkOption {
+          type = types.int;
+          default = 2;
+          example = 0;
+          description = ''
+            Set to 0, if you want authentication checks to occur on each
+            request. Otherwise set to the number of minutes between request
+            to validate if the user is logged in or out of the Crowd SSO
+            server. Setting this value to 1 or higher will increase the
+            performance of Crowd's integration.
+          '';
+        };
+      };
+
+
+
       jrePackage = let
         jreSwitch = unfree: free: if config.nixpkgs.config.allowUnfree or false then unfree else free;
       in mkOption {
diff --git a/nixos/modules/services/web-apps/atlassian/jira.nix b/nixos/modules/services/web-apps/atlassian/jira.nix
index 0ab94d95eee..19b6a8d3085 100644
--- a/nixos/modules/services/web-apps/atlassian/jira.nix
+++ b/nixos/modules/services/web-apps/atlassian/jira.nix
@@ -6,7 +6,22 @@ let
 
   cfg = config.services.jira;
 
-  pkg = pkgs.atlassian-jira;
+  pkg = pkgs.atlassian-jira.override {
+    enableSSO = cfg.sso.enable;
+    crowdProperties = ''
+      application.name                        ${cfg.sso.applicationName}
+      application.password                    ${cfg.sso.applicationPassword}
+      application.login.url                   ${cfg.sso.crowd}/console/
+
+      crowd.server.url                        ${cfg.sso.crowd}/services/
+      crowd.base.url                          ${cfg.sso.crowd}/
+
+      session.isauthenticated                 session.isauthenticated
+      session.tokenkey                        session.tokenkey
+      session.validationinterval              ${toString cfg.sso.validationInterval}
+      session.lastvalidation                  session.lastvalidation
+    '';
+  };
 
 in
 
@@ -82,6 +97,40 @@ in
         };
       };
 
+      sso = {
+        enable = mkEnableOption "SSO with Atlassian Crowd";
+
+        crowd = mkOption {
+          type = types.str;
+          example = "http://localhost:8095/crowd";
+          description = "Crowd Base URL without trailing slash";
+        };
+
+        applicationName = mkOption {
+          type = types.str;
+          example = "jira";
+          description = "Exact name of this JIRA instance in Crowd";
+        };
+
+        applicationPassword = mkOption {
+          type = types.str;
+          description = "Application password of this JIRA instance in Crowd";
+        };
+
+        validationInterval = mkOption {
+          type = types.int;
+          default = 2;
+          example = 0;
+          description = ''
+            Set to 0, if you want authentication checks to occur on each
+            request. Otherwise set to the number of minutes between request
+            to validate if the user is logged in or out of the Crowd SSO
+            server. Setting this value to 1 or higher will increase the
+            performance of Crowd's integration.
+          '';
+        };
+      };
+
       jrePackage = let
         jreSwitch = unfree: free: if config.nixpkgs.config.allowUnfree or false then unfree else free;
       in mkOption {
diff --git a/pkgs/servers/atlassian/confluence.nix b/pkgs/servers/atlassian/confluence.nix
index 3c1cdda8361..ea8d2651836 100644
--- a/pkgs/servers/atlassian/confluence.nix
+++ b/pkgs/servers/atlassian/confluence.nix
@@ -1,4 +1,7 @@
-{ stdenv, fetchurl }:
+{ stdenv, lib, fetchurl
+, enableSSO ? false
+, crowdProperties ? null
+}:
 
 stdenv.mkDerivation rec {
   name = "atlassian-confluence-${version}";
@@ -19,6 +22,14 @@ stdenv.mkDerivation rec {
     rm -r logs; ln -sf /run/confluence/logs/ .
     rm -r work; ln -sf /run/confluence/work/ .
     rm -r temp; ln -sf /run/confluence/temp/ .
+  '' + lib.optionalString enableSSO ''
+    substituteInPlace confluence/WEB-INF/classes/seraph-config.xml \
+      --replace com.atlassian.confluence.user.ConfluenceAuthenticator\
+                com.atlassian.confluence.user.ConfluenceCrowdSSOAuthenticator
+  '' + lib.optionalString (crowdProperties != null) ''
+    cat <<EOF > confluence/WEB-INF/classes/crowd.properties
+    ${crowdProperties}
+    EOF
   '';
 
   installPhase = ''
diff --git a/pkgs/servers/atlassian/jira.nix b/pkgs/servers/atlassian/jira.nix
index bd044975f22..0013286c03c 100644
--- a/pkgs/servers/atlassian/jira.nix
+++ b/pkgs/servers/atlassian/jira.nix
@@ -1,4 +1,7 @@
-{ stdenv, fetchurl }:
+{ stdenv, lib, fetchurl
+, enableSSO ? false
+, crowdProperties ? null
+}:
 
 stdenv.mkDerivation rec {
   name = "atlassian-jira-${version}";
@@ -17,6 +20,14 @@ stdenv.mkDerivation rec {
     rm -r logs; ln -sf /run/atlassian-jira/logs/ .
     rm -r work; ln -sf /run/atlassian-jira/work/ .
     rm -r temp; ln -sf /run/atlassian-jira/temp/ .
+  '' + lib.optionalString enableSSO ''
+    substituteInPlace atlassian-jira/WEB-INF/classes/seraph-config.xml \
+      --replace com.atlassian.jira.security.login.JiraSeraphAuthenticator \
+                com.atlassian.jira.security.login.SSOSeraphAuthenticator
+  '' + lib.optionalString (crowdProperties != null) ''
+    cat <<EOF > atlassian-jira/WEB-INF/classes/crowd.properties
+    ${crowdProperties}
+    EOF
   '';
 
   installPhase = ''