diff --git a/.hgignore b/.hgignore
new file mode 100644
index 0000000000..635c45799d
--- /dev/null
+++ b/.hgignore
@@ -0,0 +1,14 @@
+ ^tailor.state$
+ ^tailor.state.old$
+ ^tailor.state.journal$
+\.csproj$
+\.csproj\.user$
+\.dll\.build$
+/bin/Debug/.+\.dll$
+/bin/Debug/.+\.dll.mdb$
+^bin/.+\.dll$
+^bin/.+\.exe
+^(OpenSim|Prebuild)/.+\.(exe|exe\.build|exe\.mdb)$
+^OpenSim\.(build|sln)$
+^Prebuild/Prebuild\.(build|sln)$
+.+~$