diff --git a/src/core/mod.rs b/src/core/mod.rs
new file mode 100644
index 0000000..f6ac8fc
--- /dev/null
+++ b/src/core/mod.rs
@@ -0,0 +1 @@
+pub mod traits;
diff --git a/src/core/traits.rs b/src/core/traits.rs
new file mode 100644
index 0000000..55b1610
--- /dev/null
+++ b/src/core/traits.rs
@@ -0,0 +1,23 @@
+#[derive(Clone, Debug)]
+pub struct Entry {
+    pub source: &'static str,
+    pub name: String,
+    pub description: String,
+    pub identifier: u64,
+}
+
+pub trait Source: Send + Sync {
+    fn name(&self) -> &'static str;
+    fn entries(&mut self) -> Vec<Entry>;
+    fn actions(&self, _entry: &Entry) -> Vec<String>
+    { vec![] }
+
+    fn exec_default(&self, entry: &Entry)
+    { self.exec_action(entry, 0) }
+
+    fn exec_action(&self, entry: &Entry, action: u8);
+}
+
+pub trait Matcher: Send + Sync {
+    fn try_match(&self, haystack: &str, needle: &str) -> Option<(f64, Vec<usize>)>;
+}
diff --git a/src/main.rs b/src/main.rs
index 18ffede..968724e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,12 +6,13 @@ use winit::event_loop::{ControlFlow, EventLoop};
 use winit::event::{ElementState, Event, KeyboardInput, VirtualKeyCode,
                    WindowEvent::{CloseRequested, ReceivedCharacter}};
 
-use crate::matcher::{FuseMatcher, PrefixMatcher, SkimMatcher, FlxMatcher};
+use crate::matcher::{FuseMatcher, PrefixMatcher};
 
 mod roftl;
 mod ui;
 mod sources;
 mod matcher;
+mod core;
 
 use roftl::Roftl;
 
@@ -27,11 +28,8 @@ fn main() -> Result<(), Box<dyn Error>> {
         .with_primary_source(sources::Window::new())
         .with_primary_matcher(PrefixMatcher::new());
 
-    debug!{"Source primary roftl sources"}
-    roftl.source_primary();
-
-    debug!{"Source additional roftl sources"}
-    roftl.source_additional();
+    debug!{"Source roftl sources"}
+    roftl.source();
 
     debug!{"Build window"}
     let event_loop = EventLoop::new();
diff --git a/src/matcher/flx.rs b/src/matcher/flx.rs
index 9c75ace..8b363d0 100644
--- a/src/matcher/flx.rs
+++ b/src/matcher/flx.rs
@@ -1,4 +1,4 @@
-use crate::roftl::Matcher;
+use super::core::traits::Matcher;
 
 use flx_rs::Score;
 use log::debug;
diff --git a/src/matcher/fuse.rs b/src/matcher/fuse.rs
index 6dda7d2..cd90e8a 100644
--- a/src/matcher/fuse.rs
+++ b/src/matcher/fuse.rs
@@ -2,7 +2,7 @@ use std::ops::Range;
 
 use fuse_rust::Fuse;
 
-use crate::roftl::Matcher;
+use super::core::traits::Matcher;
 
 fn flatten_ranges(ranges: Vec<Range<usize>>) -> Vec<usize> {
     ranges.into_iter().flat_map(|range| {range.collect::<Vec<usize>>().into_iter()})
diff --git a/src/matcher/mod.rs b/src/matcher/mod.rs
index 0969d3a..d9b4bd5 100644
--- a/src/matcher/mod.rs
+++ b/src/matcher/mod.rs
@@ -1,3 +1,5 @@
+use super::core;
+
 mod prefix;
 pub use prefix::PrefixMatcher;
 
diff --git a/src/matcher/prefix.rs b/src/matcher/prefix.rs
index 32e8cab..b00c47e 100644
--- a/src/matcher/prefix.rs
+++ b/src/matcher/prefix.rs
@@ -1,4 +1,4 @@
-use crate::roftl::Matcher;
+use super::core::traits::Matcher;
 
 pub struct PrefixMatcher;
 
diff --git a/src/matcher/skim.rs b/src/matcher/skim.rs
index 409a2cf..37399da 100644
--- a/src/matcher/skim.rs
+++ b/src/matcher/skim.rs
@@ -1,6 +1,6 @@
 use fuzzy_matcher::{FuzzyMatcher, skim::SkimMatcherV2};
 
-use crate::roftl::Matcher;
+use super::core::traits::Matcher;
 
 pub struct SkimMatcher {
     matcher: SkimMatcherV2
diff --git a/src/roftl.rs b/src/roftl.rs
index 785ded8..fa91788 100644
--- a/src/roftl.rs
+++ b/src/roftl.rs
@@ -1,4 +1,3 @@
-use std::rc::Rc;
 use std::sync::RwLock;
 use std::sync::Arc;
 use log::debug;
@@ -6,33 +5,14 @@ use rayon::prelude::*;
 
 use super::matcher::PrefixMatcher;
 
+use super::core::traits::Matcher;
+use super::core::traits::Source;
+use super::core::traits::Entry;
+
+
 pub type SourceRef = Box<dyn Source>;
 pub type MatcherRef = Box<dyn Matcher>;
 
-#[derive(Clone, Debug)]
-pub struct Entry {
-    pub source: &'static str,
-    pub name: String,
-    pub description: String,
-    pub identifier: u64,
-}
-
-pub trait Source: Send + Sync {
-    fn name(&self) -> &'static str;
-    fn entries(&mut self) -> Vec<Entry>;
-    fn actions(&self, _entry: &Entry) -> Vec<String>
-    { vec![] }
-
-    fn exec_default(&self, entry: &Entry)
-    { self.exec_action(entry, 0) }
-
-    fn exec_action(&self, entry: &Entry, action: u8);
-}
-
-pub trait Matcher: Send + Sync {
-    fn try_match(&self, haystack: &str, needle: &str) -> Option<(f64, Vec<usize>)>;
-}
-
 pub struct Roftl {
     sources: Arc<RwLock<Vec<SourceRef>>>,
     source_chan: Option<std::sync::mpsc::Receiver<Vec<Entry>>>,
@@ -66,7 +46,7 @@ impl Roftl {
         self
     }
 
-    pub fn add_source(mut self, source: SourceRef) -> Self {
+    pub fn add_source(self, source: SourceRef) -> Self {
         if self.sources.read().unwrap().par_iter().any(|s| s.name().eq(source.name())) {
             panic! {"Source with name '{}' already exists", source.name()}
         }
@@ -85,7 +65,12 @@ impl Roftl {
         self
     }
 
-    pub fn source_primary(&mut self) {
+    pub fn source(&mut self) {
+        self.source_primary();
+        self.source_additional();
+    }
+
+    fn source_primary(&mut self) {
         self.entries = self.primary_source
             .par_iter_mut()
             .flat_map(|s| s.entries())
@@ -94,7 +79,7 @@ impl Roftl {
         debug!("Sourced {} primary entries", self.entries.len());
     }
 
-    pub fn source_additional(&mut self) {
+    fn source_additional(&mut self) {
         let (tx, rx) = std::sync::mpsc::channel();
         self.source_chan = Some(rx);
 
@@ -153,7 +138,6 @@ impl Roftl {
                 .par_iter()
                 .enumerate()
                 .filter_map(|(idx, entry)| {
-                    if entry.source == "window" { return None }
                     if input.is_empty() { return Some((0.0, idx, entry, vec![])) }
 
                     let match_result = matcher.try_match(&entry.name, input);
diff --git a/src/sources/apps.rs b/src/sources/apps.rs
index d2beb52..1634fe2 100644
--- a/src/sources/apps.rs
+++ b/src/sources/apps.rs
@@ -5,7 +5,7 @@ use log::{debug, error, trace};
 use walkdir::WalkDir;
 use nix::unistd::{getpid, setpgid};
 
-use crate::roftl::{Entry, Source};
+use super::core::traits::{Entry, Source};
 
 #[derive(Debug)]
 struct App {
diff --git a/src/sources/mod.rs b/src/sources/mod.rs
index e9aba03..d73c72b 100644
--- a/src/sources/mod.rs
+++ b/src/sources/mod.rs
@@ -1,3 +1,5 @@
+use super::core;
+
 mod test;
 pub use test::TestSource;
 
diff --git a/src/sources/shellhost.rs b/src/sources/shellhost.rs
index 6281b17..18655a7 100644
--- a/src/sources/shellhost.rs
+++ b/src/sources/shellhost.rs
@@ -3,7 +3,7 @@ use log::{debug, error};
 use nix::unistd::{getpid, setpgid};
 use walkdir::WalkDir;
 
-use crate::roftl::{Entry, Source};
+use super::core::traits::{Entry, Source};
 
 pub struct ShellHost {
     scripts: Vec<PathBuf>,
diff --git a/src/sources/test.rs b/src/sources/test.rs
index a3b7bf1..1998d1c 100644
--- a/src/sources/test.rs
+++ b/src/sources/test.rs
@@ -1,4 +1,4 @@
-use crate::roftl::{Entry, Source};
+use super::core::traits::{Entry, Source};
 
 pub struct TestSource {
     entries: Vec<Entry>,
diff --git a/src/sources/windows.rs b/src/sources/windows.rs
index 610b1bc..a5e4984 100644
--- a/src/sources/windows.rs
+++ b/src/sources/windows.rs
@@ -1,7 +1,6 @@
 use std::collections::HashMap;
-use std::ptr;
 
-use crate::roftl::{Entry, Source};
+use super::core::traits::{Entry, Source};
 use log::debug;
 use xcb::ffi::XCB_CURRENT_TIME;
 use xcb_util::ewmh;
diff --git a/src/ui/mod.rs b/src/ui/mod.rs
index d2f8c91..ea7b154 100644
--- a/src/ui/mod.rs
+++ b/src/ui/mod.rs
@@ -1,3 +1,5 @@
+use super::core;
+
 mod ui;
 pub use ui::draw;
 pub use ui::redraw_quick;
diff --git a/src/ui/painter.rs b/src/ui/painter.rs
index 4cf983e..7711011 100644
--- a/src/ui/painter.rs
+++ b/src/ui/painter.rs
@@ -1,5 +1,4 @@
 use log::debug;
-use rayon::result;
 
 use super::theme::{Theme, ThemedContextExt};
 
diff --git a/src/ui/ui.rs b/src/ui/ui.rs
index 0427188..80026dc 100644
--- a/src/ui/ui.rs
+++ b/src/ui/ui.rs
@@ -4,7 +4,7 @@ use std::ffi::c_void;
 use log::debug;
 use winit::{platform::unix::WindowExtUnix, window::Window};
 
-use crate::roftl::Entry;
+use super::core::traits::Entry;
 
 use super::painter;