diff --git a/specparam/modes/__init__.py b/specparam/modes/__init__.py
index e69de29b..03833572 100644
--- a/specparam/modes/__init__.py
+++ b/specparam/modes/__init__.py
@@ -0,0 +1 @@
+"""Functionality related to definining fit modes."""
diff --git a/specparam/modes/definitions.py b/specparam/modes/definitions.py
index a230d46a..39bcf76a 100644
--- a/specparam/modes/definitions.py
+++ b/specparam/modes/definitions.py
@@ -148,3 +148,33 @@
     'skewed_gaussian' : pe_skewnorm,
     'cauchy' : pe_cauchy,
 }
+
+###################################################################################################
+## ALL MODES
+
+# Collect a store of all available modes
+MODES = {
+    'aperiodic' : AP_MODES,
+    'periodic' : PE_MODES,
+}
+
+
+def check_modes(component, check_params=False):
+    """Check the set of modes that are available.
+
+    Parameters
+    ----------
+    component : {'aperiodic', 'periodic'}
+        Which component to check available modes for.
+    check_params : bool, optional, default: False
+        Whether to print out information on the parameters of each mode.
+    """
+
+    print('Available {:s} modes:'.format(component))
+    for mode in MODES[component].values():
+        if not check_params:
+            print('    {:10s}    {:s}'.format(mode.name, mode.description))
+        else:
+            print('\n{:s}'.format(mode.name))
+            print('    {:s}'.format(mode.description))
+            mode.check_params()
diff --git a/specparam/modes/mode.py b/specparam/modes/mode.py
index 596e6804..15ac972e 100644
--- a/specparam/modes/mode.py
+++ b/specparam/modes/mode.py
@@ -88,7 +88,6 @@ def n_params(self):
     def check_params(self):
         """Check the description of the parameters for the current mode."""
 
-        print('Parameters for the {} component in {} mode:'.format(\
-            self.component, self.name))
+        print('Parameters for the {} mode:'.format(self.name))
         for pkey, desc in self.params.descriptions.items():
-            print('\t{:15s} {:s}'.format(pkey, desc))
+            print('    {:15s} {:s}'.format(pkey, desc))
diff --git a/specparam/tests/modes/test_definitions.py b/specparam/tests/modes/test_definitions.py
new file mode 100644
index 00000000..e2300a0d
--- /dev/null
+++ b/specparam/tests/modes/test_definitions.py
@@ -0,0 +1,11 @@
+"""Tests for specparam.modes.definitions."""
+
+from specparam.modes.definitions import *
+
+###################################################################################################
+###################################################################################################
+
+def test_check_modes():
+
+    check_modes('aperiodic')
+    check_modes('periodic')