diff --git a/pytket/docs/extensions.rst b/pytket/docs/extensions.rst
index 751cc9a9c7..4975510211 100644
--- a/pytket/docs/extensions.rst
+++ b/pytket/docs/extensions.rst
@@ -36,9 +36,6 @@ QPUs
 `IBMQBackend <https://tket.quantinuum.com/extensions/pytket-qiskit/api.html#pytket.extensions.qiskit.IBMQBackend>`_
 - A backend for running circuits on remote IBMQ devices.
 
-`IonQBackend <https://cqcl.github.io/pytket-ionq/api/api.html#pytket.extensions.ionq.IonQBackend>`_
-- A backend for running circuits on remote IONQ devices.
-
 `ForestBackend <https://tket.quantinuum.com/extensions/pytket-pyquil/api.html#pytket.extensions.pyquil.ForestBackend>`_
 - A backend for running circuits on remote Rigetti devices.
 
@@ -95,6 +92,10 @@ Density Matrix Simulators
 `CirqDensityMatrixSimBackend <https://tket.quantinuum.com/extensions/pytket-cirq/api.html#pytket.extensions.cirq.CirqDensityMatrixSimBackend>`_
 - Backend for Cirq density matrix simulator density_matrix return.
 
+`QulacsBackend`_ - This has a configurable density matrix simulation option. 
+
+Use ``QulacsBackend(result_type="density_matrix")``.
+
 Clifford Simulators
 -------------------
 
@@ -132,7 +133,6 @@ Other
    pytket-aqt <https://cqcl.github.io/pytket-aqt/api/index.html>
    pytket-braket <https://tket.quantinuum.com/extensions/pytket-braket>
    pytket-cirq <https://tket.quantinuum.com/extensions/pytket-cirq>
-   pytket-ionq <https://cqcl.github.io/pytket-ionq/api/index.html>
    pytket-iqm <https://tket.quantinuum.com/extensions/pytket-iqm>
    pytket-pennylane <https://tket.quantinuum.com/extensions/pytket-pennylane>
    pytket-projectq <https://tket.quantinuum.com/extensions/pytket-projectq>
@@ -156,4 +156,5 @@ Other
 .. _ForestStateBackend: https://tket.quantinuum.com/extensions/pytket-pyquil/api/api.html#pytket.extensions.pyquil.ForestStateBackend
 .. _AerUnitaryBackend: https://tket.quantinuum.com/extensions/pytket-qiskit/api/api.html#pytket.extensions.qiskit.AerUnitaryBackend
 .. _CirqDensityMatrixSampleBackend: https://tket.quantinuum.com/extensions/pytket-cirq/api/api.html#pytket.extensions.cirq.CirqDensityMatrixSampleBackend
-.. _SimplexBackend: https://tket.quantinuum.com/extensions/pytket-simplex/api.html#pytket.extensions.pysimplex.SimplexBackend
\ No newline at end of file
+.. _SimplexBackend: https://tket.quantinuum.com/extensions/pytket-simplex/api.html#pytket.extensions.pysimplex.SimplexBackend
+.. _QulacsBackend: https://tket.quantinuum.com/extensions/pytket-qulacs/api.html#pytket.extensions.qulacs.QulacsBackend
\ No newline at end of file
diff --git a/pytket/docs/index.rst b/pytket/docs/index.rst
index c5966e12f5..0af927292b 100644
--- a/pytket/docs/index.rst
+++ b/pytket/docs/index.rst
@@ -75,7 +75,7 @@ Licensed under the `Apache 2 License <http://www.apache.org/licenses/LICENSE-2.0
 .. _Quantinuum: https://www.quantinuum.com/
 
 .. toctree::
-    :caption: Introduction:
+    :caption: Overview:
     :maxdepth: 1
 
     getting_started.rst
@@ -84,12 +84,13 @@ Licensed under the `Apache 2 License <http://www.apache.org/licenses/LICENSE-2.0
     faqs.rst
 
 .. toctree::
-    :caption: More Documentation:
+    :caption: pytket documentation:
     
-    TKET website <https://tket.quantinuum.com/>
-    Manual <https://tket.quantinuum.com/user-manual/>
-    extensions.rst  
+    pytket API docs <https://tket.quantinuum.com/api-docs/>
+    extensions.rst
+    Manual <https://tket.quantinuum.com/user-manual>
     Example notebooks <https://tket.quantinuum.com/examples>
+    TKET website <https://tket.quantinuum.com/>
 
 .. toctree::
     :caption: API Reference: