diff --git a/projects/re-flex/LICENSE b/projects/re-flex/LICENSE
new file mode 100644
index 00000000..a39cb308
--- /dev/null
+++ b/projects/re-flex/LICENSE
@@ -0,0 +1 @@
+This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
\ No newline at end of file
diff --git a/projects/re-flex/README.md b/projects/re-flex/README.md
new file mode 100644
index 00000000..3c18c202
--- /dev/null
+++ b/projects/re-flex/README.md
@@ -0,0 +1,4 @@
+re-flex
+-------
+
+Utilities for regex construction adapted from Software Design for Flexibility.
\ No newline at end of file
diff --git a/projects/re-flex/build.hxml b/projects/re-flex/build.hxml
new file mode 100644
index 00000000..140db8a8
--- /dev/null
+++ b/projects/re-flex/build.hxml
@@ -0,0 +1,4 @@
+-lib kiss
+-cp src
+--main re_flex.Main
+--interp
\ No newline at end of file
diff --git a/projects/re-flex/haxelib.json b/projects/re-flex/haxelib.json
new file mode 100644
index 00000000..fc12c64c
--- /dev/null
+++ b/projects/re-flex/haxelib.json
@@ -0,0 +1,16 @@
+{
+	"main": "re_flex.Main",
+	"name": "re-flex",
+	"description": "",
+	"classPath": "src/",
+	"dependencies": {
+		"kiss": ""
+	},
+	"url": "https://github.com/NQNStudios/kisslang",
+	"contributors": [
+		"NQNStudios"
+	],
+	"version": "0.0.0",
+	"releasenote": "",
+	"tags": []
+}
\ No newline at end of file
diff --git a/projects/re-flex/src/re_flex/Main.hx b/projects/re-flex/src/re_flex/Main.hx
new file mode 100644
index 00000000..207a1563
--- /dev/null
+++ b/projects/re-flex/src/re_flex/Main.hx
@@ -0,0 +1,7 @@
+package re_flex;
+
+import kiss.Kiss;
+import kiss.Prelude;
+
+@:build(kiss.Kiss.build())
+class Main {}
diff --git a/projects/re-flex/src/re_flex/Main.kiss b/projects/re-flex/src/re_flex/Main.kiss
new file mode 100644
index 00000000..d441299f
--- /dev/null
+++ b/projects/re-flex/src/re_flex/Main.kiss
@@ -0,0 +1 @@
+(print "Hello world!")
diff --git a/projects/re-flex/src/re_flex/R.hx b/projects/re-flex/src/re_flex/R.hx
new file mode 100644
index 00000000..a84aba25
--- /dev/null
+++ b/projects/re-flex/src/re_flex/R.hx
@@ -0,0 +1,7 @@
+package re_flex;
+
+import kiss.Prelude;
+import kiss.List;
+
+@:build(kiss.Kiss.build())
+class R {}
diff --git a/projects/re-flex/src/re_flex/R.kiss b/projects/re-flex/src/re_flex/R.kiss
new file mode 100644
index 00000000..2c9c2daf
--- /dev/null
+++ b/projects/re-flex/src/re_flex/R.kiss
@@ -0,0 +1,29 @@
+(var anyChar ".")
+(var start "^")
+(var end "\$")
+
+(function :String _group [:Array<Dynamic> exprs]
+    (+ "(" (apply + exprs) ")"))
+
+(var group (Reflect.makeVarArgs _group))
+
+(function :String escape [:String str]
+    (group (EReg.escape str)))
+
+(function :String _oneOf [:Array<Dynamic> exprs]
+    (group (exprs.join "|")))
+
+(var oneOf (Reflect.makeVarArgs _oneOf))
+
+(function :String repeat [:String expr &opt :Int min :Int max]
+    (apply group
+        (concat
+            (for _ (range min) expr)
+            (cond
+                // unlimited repetitions after minimum if max is null:
+                (!max
+                    [(group expr) "*"])
+                ((= max min)
+                    [])
+                (true
+                    (for _ (range (- max min)) (oneOf expr "")))))))
diff --git a/projects/re-flex/test.sh b/projects/re-flex/test.sh
new file mode 100644
index 00000000..0ee8ae95
--- /dev/null
+++ b/projects/re-flex/test.sh
@@ -0,0 +1,3 @@
+#! /bin/bash
+
+haxe build.hxml
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