diff --git a/.gitignore b/.gitignore
index 088ba6b..cbed4d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,5 @@ Cargo.lock
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
+
+.idea/
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..a746b80
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "native-ui-rs"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
\ No newline at end of file
diff --git a/native-ui-rs.iml b/native-ui-rs.iml
new file mode 100644
index 0000000..2fecef3
--- /dev/null
+++ b/native-ui-rs.iml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="RUST_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/src/abstracts/application.rs b/src/abstracts/application.rs
new file mode 100644
index 0000000..b3119e6
--- /dev/null
+++ b/src/abstracts/application.rs
@@ -0,0 +1,55 @@
+use crate::abstracts::Window;
+
+#[derive(Clone)]
+pub struct Application {
+    pub title: String,
+    pub main_windows: Vec<Window>,
+}
+
+impl Application {
+    pub fn builder() -> ApplicationBuilder {
+        ApplicationBuilder::default()
+    }
+}
+
+pub struct ApplicationBuilder {
+    title: String,
+    main_windows: Vec<Window>,
+}
+
+impl ApplicationBuilder {
+    pub fn new() -> ApplicationBuilder {
+        ApplicationBuilder {
+            title: String::from("My App"),
+            main_windows: Vec::new(),
+        }
+    }
+
+    pub fn title(mut self, title: &str) -> ApplicationBuilder {
+        self.title = String::from(title);
+        self
+    }
+
+    pub fn add_window(mut self, window: Window) -> ApplicationBuilder {
+        self.main_windows.push(window);
+        self
+    }
+
+    pub fn build(mut self) -> Application {
+        for window in &mut self.main_windows {
+            if window.title_default {
+                window.title = self.title.clone();
+            }
+        }
+        Application {
+            title: self.title,
+            main_windows: self.main_windows
+        }
+    }
+}
+
+impl Default for ApplicationBuilder {
+    fn default() -> Self {
+        Self::new()
+    }
+}
diff --git a/src/abstracts/mod.rs b/src/abstracts/mod.rs
new file mode 100644
index 0000000..5fb4307
--- /dev/null
+++ b/src/abstracts/mod.rs
@@ -0,0 +1,18 @@
+mod application;
+mod window;
+
+pub use crate::abstracts::{
+    application::{
+        Application,
+        ApplicationBuilder
+    },
+    window::{
+        Window,
+        WindowBuilder
+    },
+};
+
+#[derive(Clone,Debug)]
+pub enum Widget {
+    Window(Box<Window>)
+}
\ No newline at end of file
diff --git a/src/abstracts/window.rs b/src/abstracts/window.rs
new file mode 100644
index 0000000..123566d
--- /dev/null
+++ b/src/abstracts/window.rs
@@ -0,0 +1,80 @@
+use crate::abstracts::Widget;
+
+#[derive(Clone, Debug)]
+pub struct Window {
+    pub title: String,
+    pub width: usize,
+    pub height: usize,
+    pub content: Option<Widget>,
+    pub title_default: bool
+}
+
+impl Window {
+    pub fn builder() -> WindowBuilder {
+        WindowBuilder::default()
+    }
+}
+
+pub struct WindowBuilder {
+    title: String,
+    width: usize,
+    height: usize,
+    content: Option<Widget>,
+    title_default: bool,
+}
+
+impl WindowBuilder {
+    pub fn new() -> WindowBuilder {
+        WindowBuilder {
+            title: String::from("My Window"),
+            width: 250,
+            height: 250,
+            content: None,
+            title_default: true,
+        }
+    }
+
+    pub fn title(mut self, title: &str) -> WindowBuilder {
+        self.title = String::from(title);
+        self.title_default = false;
+        self
+    }
+
+
+    pub fn width(mut self, width: usize) -> WindowBuilder {
+        self.width = width;
+        self
+    }
+
+    pub fn height(mut self, height: usize) -> WindowBuilder {
+        self.height = height;
+        self
+    }
+
+    pub fn dimensions(mut self, width: usize, height: usize) -> WindowBuilder {
+        self.width = width;
+        self.height = height;
+        self
+    }
+
+    pub fn content(mut self, widget: Widget) -> WindowBuilder {
+        self.content = Some(widget);
+        self
+    }
+
+    pub fn build(self) -> Window {
+        Window {
+            title: self.title,
+            width: self.width,
+            height: self.height,
+            content: self.content,
+            title_default: self.title_default,
+        }
+    }
+}
+
+impl Default for WindowBuilder {
+    fn default() -> Self {
+        Self::new()
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..9ce03c7
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,17 @@
+pub mod abstracts;
+
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}