diff --git a/README.md b/README.md
new file mode 100644
index 0000000..38f9269
--- /dev/null
+++ b/README.md
@@ -0,0 +1,42 @@
+# libscheaders — Grab bag of header-only C++ functionality
+
+## Build
+
+Headers only, so: no build step!
+
+## Install
+
+`sudo make install`
+
+or, on OpenBSD:
+
+`doas gmake install`
+
+## Documentation
+
+In progress.
+
+Currently, there are 4 headers:
+
+functools.hpp
+
+: Contains nestable versions of the functional programming triad `map`,
+  `filter`, and `reduce`. Whereas the C++ Standard Library algorithms can handle
+  different containers, as usual, these versions only work with `std::vector`,
+  with the specific feature that they can be nested.
+
+integer_locale.hpp
+
+: Contains a custom locale which displays long integers with a dot (`.`) as
+  thousands separator.
+
+plugin.hpp
+
+: Contains full support for POSIX shared libraries to be used as plugins.
+  Defines an interface for a generic plugin class. I use this in my
+  [screensaver](https://git.bobpolis.com/bob/screensaver/) project.
+
+sync_queue.hpp
+
+: This is taken from Bjarne Stroustrup's book "The C++ Programming Language", 4th
+  Ed., and implements a simple thread-safe queue.