diff --git a/AcousticScattering/.gitignore b/AcousticScattering/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..547656a59b8d2e8b9c682a94e237906e5f0cd737
--- /dev/null
+++ b/AcousticScattering/.gitignore
@@ -0,0 +1,4 @@
+*.pos
+*.msh
+*.pre
+*.db
diff --git a/HelmholtzCornerCondition/.gitignore b/HelmholtzCornerCondition/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..547656a59b8d2e8b9c682a94e237906e5f0cd737
--- /dev/null
+++ b/HelmholtzCornerCondition/.gitignore
@@ -0,0 +1,4 @@
+*.pos
+*.msh
+*.pre
+*.db
diff --git a/TimeReversal/.gitignore b/TimeReversal/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..547656a59b8d2e8b9c682a94e237906e5f0cd737
--- /dev/null
+++ b/TimeReversal/.gitignore
@@ -0,0 +1,4 @@
+*.pos
+*.msh
+*.pre
+*.db