diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8b3f1ff
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,31 @@
+brainfuck_*
+base64_*
+json_*
+.crystal
+*.swp
+*.class
+*.yml
+nimcache
+*.o
+*.a
+*.so
+*.json
+*.swp
+todo
+*.exe
+*.dll
+bin_*
+target
+rock_tmp
+.libs
+*.txt
+perllib
+*.jar
+.lein-deps-sum
+obj
+bin
+!project.json
+*.swo
+*.hi
+*.cmi
+*.cmx