diff --git a/pkgs/development/python-modules/flask-gravatar/default.nix b/pkgs/development/python-modules/flask-gravatar/default.nix
new file mode 100644
index 0000000000000..8b981d8816b3c
--- /dev/null
+++ b/pkgs/development/python-modules/flask-gravatar/default.nix
@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonAtLeast
+, flask
+, pytest-runner
+}:
+
+buildPythonPackage rec {
+  pname = "Flask-Gravatar";
+  version = "0.5.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "YGZfMcLGEokdto/4Aek+06CIHGyOw0arxk0qmSP1YuE=";
+  };
+
+  # depends on pytest-pep8 which is abandoned, not going to bother
+  doCheck = false;
+
+  preBuild = ''
+    sed "s|tests_require=tests_require,||g" -i setup.py
+    sed "s|extras_require=extras_require,||g" -i setup.py
+    sed "s|setup_requires=setup_requires,||g" -i setup.py
+  '';
+
+  propagatedBuildInputs = [
+    flask
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/zzzsochi/Flask-Gravatar";
+    description = "Small and simple integration of gravatar into flask";
+    license = licenses.bsd3;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ mkg20001 ];
+  };
+}
diff --git a/pkgs/development/python-modules/flask-paranoid/default.nix b/pkgs/development/python-modules/flask-paranoid/default.nix
new file mode 100644
index 0000000000000..6a37ffdf571e8
--- /dev/null
+++ b/pkgs/development/python-modules/flask-paranoid/default.nix
@@ -0,0 +1,37 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonAtLeast
+, flask
+, pytest
+, pytest-runner
+}:
+
+buildPythonPackage rec {
+  pname = "Flask-Paranoid";
+  version = "0.2.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "ou6SV2QuAlTxFXikqlShpyUWemQc+gh5Mw1HfsNwx0k=";
+  };
+
+  propagatedBuildInputs = [
+    flask
+  ];
+
+  checkInputs = [
+    pytest
+    pytest-runner
+  ];
+
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://github.com/miguelgrinberg/flask-paranoid/";
+    description = "Simple user session protection";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ mkg20001 ];
+  };
+}
diff --git a/pkgs/development/python-modules/flask-security-too/default.nix b/pkgs/development/python-modules/flask-security-too/default.nix
new file mode 100644
index 0000000000000..efc32a0489676
--- /dev/null
+++ b/pkgs/development/python-modules/flask-security-too/default.nix
@@ -0,0 +1,49 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonAtLeast
+, flask
+, blinker
+, itsdangerous
+, flask_principal
+, passlib
+, email_validator
+, flask_wtf
+, flask_login
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "Flask-Security-Too";
+  version = "4.0.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "wpZ/zgjL4qHGrajqr8cXYm2Q8pbvp6F/hZwT9Gv+8eA=";
+  };
+
+  propagatedBuildInputs = [
+    flask
+    flask_login
+    flask_principal
+    flask_wtf
+    email_validator
+    itsdangerous
+    passlib
+    blinker
+  ];
+
+  doCheck = false;
+
+  checkInputs = [
+    pytest
+  ];
+
+  meta = with lib; {
+    homepage = "https://pypi.org/project/Flask-Security-Too/";
+    description = "Simple security for Flask apps (fork)";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ mkg20001 ];
+  };
+}
diff --git a/pkgs/development/python-modules/httpagentparser/default.nix b/pkgs/development/python-modules/httpagentparser/default.nix
new file mode 100644
index 0000000000000..28acbd250aad1
--- /dev/null
+++ b/pkgs/development/python-modules/httpagentparser/default.nix
@@ -0,0 +1,30 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonAtLeast
+, tox
+}:
+
+buildPythonPackage rec {
+  pname = "httpagentparser";
+  version = "1.9.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "73Y9MZk912GCWs7myLNL4yuVzxZ10cc8PNNfnlKDGyY=";
+  };
+
+  checkInputs = [
+    tox
+  ];
+
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://pypi.org/project/httpagentparser/";
+    description = "Extracts OS Browser etc information from http user agent string";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ mkg20001 ];
+  };
+}
diff --git a/pkgs/development/python-modules/speaklater3/default.nix b/pkgs/development/python-modules/speaklater3/default.nix
new file mode 100644
index 0000000000000..5fc9aed24ad3f
--- /dev/null
+++ b/pkgs/development/python-modules/speaklater3/default.nix
@@ -0,0 +1,22 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "speaklater3";
+  version = "1.4";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "ySYdS2taMEZyMS0esImb4Cj6yRdgGQqA/szTHTo7UEI=";
+  };
+
+  meta = with lib; {
+    description = "Implements a lazy string for python useful for use with gettext";
+    homepage = "https://github.com/mitsuhiko/speaklater";
+    license = licenses.bsd0;
+    maintainers = with maintainers; [ mkg20001 ];
+  };
+
+}
diff --git a/pkgs/tools/admin/pgadmin/default.nix b/pkgs/tools/admin/pgadmin/default.nix
new file mode 100644
index 0000000000000..97678b64a2b32
--- /dev/null
+++ b/pkgs/tools/admin/pgadmin/default.nix
@@ -0,0 +1,73 @@
+{ stdenv
+, lib
+, python3
+, fetchurl
+, zlib
+, python3Packages
+}:
+
+python3Packages.buildPythonApplication rec {
+  pname = "pgadmin";
+  version = "5.4";
+
+  src = fetchurl {
+    url = "https://ftp.postgresql.org/pub/pgadmin/pgadmin4/v${version}/source/pgadmin4-${version}.tar.gz";
+    sha256 = "N0+fnS0ndH/bqwVMra6kSvKoxRCGPCvLs8aZ0PvWv0o=";
+  };
+
+  # from Dockerfile
+  CPPFLAGS="-DPNG_ARM_NEON_OPT=0";
+
+  format = "other";
+
+  postPatch = ''
+    # sed -r 's|LC_ALL=en_US.UTF-8.* Makefile.sphinx .*$|true|g' -i Makefile
+    patchShebangs .
+  '';
+
+  buildInputs = [
+    zlib
+  ];
+
+  propagatedBuildInputs = with python3Packages; [
+    flask
+    flask-gravatar
+    flask_login
+    flask_mail
+    flask_migrate
+    flask_sqlalchemy
+    flask_wtf
+    flask-compress
+    passlib
+    pytz
+    simplejson
+    six
+    (lib.hiPrio speaklater3)
+    sqlparse
+    wtforms
+    flask-paranoid
+    psutil
+    psycopg2
+    python-dateutil
+    sqlalchemy
+    itsdangerous
+    flask-security-too
+    bcrypt
+    cryptography
+    sshtunnel
+    ldap3
+    flask-babelex
+    gssapi
+    flask-socketio
+    eventlet
+    httpagentparser
+    user-agents
+  ];
+
+  meta = with lib; {
+    description = "Administration and development platform for PostgreSQL";
+    homepage = "https://www.pgadmin.org/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ mkg20001 ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1e3d3178ea0b3..b35493b4d1a53 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -31183,7 +31183,9 @@ in
 
   pgmanage = callPackage ../applications/misc/pgmanage { };
 
-  pgadmin = callPackage ../applications/misc/pgadmin {
+  pgadmin4 = callPackage ../tools/admin/pgadmin { };
+
+  pgadmin3 = callPackage ../applications/misc/pgadmin {
     openssl = openssl_1_0_2;
   };
 
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ec1b8aaad6f79..e58c34ccde9dd 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2577,6 +2577,8 @@ in {
 
   flask_elastic = callPackage ../development/python-modules/flask-elastic { };
 
+  flask-gravatar = callPackage ../development/python-modules/flask-gravatar { };
+
   flask-httpauth = callPackage ../development/python-modules/flask-httpauth { };
 
   flask-jwt-extended = callPackage ../development/python-modules/flask-jwt-extended { };
@@ -2597,6 +2599,8 @@ in {
 
   flask-paginate = callPackage ../development/python-modules/flask-paginate { };
 
+  flask-paranoid = callPackage ../development/python-modules/flask-paranoid { };
+
   flask_principal = callPackage ../development/python-modules/flask-principal { };
 
   flask-pymongo = callPackage ../development/python-modules/Flask-PyMongo { };
@@ -2613,6 +2617,8 @@ in {
 
   flask-seasurf = callPackage ../development/python-modules/flask-seasurf { };
 
+  flask-security-too = callPackage ../development/python-modules/flask-security-too { };
+
   flask-silk = callPackage ../development/python-modules/flask-silk { };
 
   flask-socketio = callPackage ../development/python-modules/flask-socketio { };
@@ -3322,6 +3328,8 @@ in {
 
   httpauth = callPackage ../development/python-modules/httpauth { };
 
+  httpagentparser = callPackage ../development/python-modules/httpagentparser { };
+
   httpbin = callPackage ../development/python-modules/httpbin { };
 
   httpcore = callPackage ../development/python-modules/httpcore { };
@@ -8094,6 +8102,8 @@ in {
 
   speaklater = callPackage ../development/python-modules/speaklater { };
 
+  speaklater3 = callPackage ../development/python-modules/speaklater3 { };
+
   spectral-cube = callPackage ../development/python-modules/spectral-cube { };
 
   speedtest-cli = callPackage ../development/python-modules/speedtest-cli { };