diff --git a/tech/C++.wiki b/tech/C++.wiki
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--- a/tech/C++.wiki
+++ b/tech/C++.wiki
@@ -3,6 +3,10 @@
 Object Oriented super set of C. Great for larger projects, with minimal
 drawbacks due to the Object abstraction.
 
+== Frameworks and libraries ==
+
+* [[Crow]]
+
 == Features ==
 
 * [[constexpr]]
diff --git a/tech/Crow.wiki b/tech/Crow.wiki
new file mode 100644
index 0000000..091ed08
--- /dev/null
+++ b/tech/Crow.wiki
@@ -0,0 +1,52 @@
+= Crow =
+
+Crow is a fast, [[flask]]-like C++ microframework
+
+== Apps ==
+
+Crow provides a `crow::App` type that comes in two flavors
+
+* `crow::SimpleApp`
+  * no middle ware
+* `crow::App<m1, m2>`
+  * uses m1, m2, etc. middleware
+
+Some other usefule interfaces
+
+* `bindaddr(192.168.1.144)`
+  * takes an IP addr to bind to
+* `.port(443)`
+  * takes an int port to listen on
+* `.multithreaded()`
+  * enable multithreaded request handling
+* `.run()`
+  * Run the app
+  * Run is blocking, use `run_async` for non blocking
+
+== Routes ==
+
+Routes assign URLs to function calls. To assign a route, use the macro
+
+`CROW_ROUTE(app, url)`
+
+where,
+* `app` is the app class to assign the route to
+* `url` is the relative path is assigned to the route
+  * paths can take paramaters
+    * `/hello/<int>`
+  * paramaters can be
+    * `int`
+    * `uint`
+    * `double`
+    * `string`
+    * `path`
+
+HTTP methods can also be changed on routes via the `.method()` call, appended
+to the `CROW_ROUTE` macro.
+
+HTTP methods include
+* `crow::HTTPMethod::GET`
+* `crow::HTTPMethod::PATCH`
+* `crow::HTTPMethod::POST`
+
+=== Catchall route ===