diff --git a/qml/ClideTreeView.qml b/qml/ClideTreeView.qml
index 49ca563..84c5484 100644
--- a/qml/ClideTreeView.qml
+++ b/qml/ClideTreeView.qml
@@ -16,13 +16,14 @@ Rectangle {
 
     signal fileClicked(string filePath)
 
+    // https://doc.qt.io/qt-6/qml-qtquick-treeview.html
     TreeView {
         id: fileSystemTreeView
         anchors.margins: 15
 
         property int lastIndex: -1
 
-        model: FileSystem
+        model: FileSystemSortProxyModel
         anchors.fill: parent
         boundsBehavior: Flickable.StopAtBounds
         boundsMovement: Flickable.StopAtBounds
diff --git a/src/gui/filesystem.rs b/src/gui/filesystem.rs
index ffac3bf..4d7d097 100644
--- a/src/gui/filesystem.rs
+++ b/src/gui/filesystem.rs
@@ -1,21 +1,47 @@
 // SPDX-FileCopyrightText: 2026, Shaun Reed <shaunrd0@gmail.com>
 //
 // SPDX-License-Identifier: GNU General Public License v3.0 or later
+use crate::gui::filesystem::qobject::{QAbstractItemModel};
+use cxx_qt_lib::{QModelIndex, QString};
+use dirs;
+use log::warn;
+use std::io::BufRead;
+use std::{fs};
+use syntect::easy::HighlightFile;
+use syntect::highlighting::ThemeSet;
+use syntect::html::{
+    IncludeBackground, append_highlighted_html_for_styled_line, start_highlighted_html_snippet,
+};
+use syntect::parsing::SyntaxSet;
 
 #[cxx_qt::bridge]
 pub mod qobject {
+    // Import Qt Types from C++
     unsafe extern "C++" {
-        // Import Qt Types from C++
         include!("cxx-qt-lib/qstring.h");
         type QString = cxx_qt_lib::QString;
+
         include!("cxx-qt-lib/qmodelindex.h");
         type QModelIndex = cxx_qt_lib::QModelIndex;
+
         include!(<QtGui/QFileSystemModel>);
         type QFileSystemModel;
+
+        include!(<QSortFilterProxyModel>);
+        type QSortFilterProxyModel;
+
+        include!(<QAbstractItemModel>);
+        type QAbstractItemModel;
     }
 
+    // Export QML classes from Rust
     unsafe extern "RustQt" {
-        // Export QML Types from Rust
+        #[qobject]
+        #[qml_element]
+        #[base = QSortFilterProxyModel]
+        #[qproperty(*mut FileSystem, inner)]
+        type FileSystemSortProxyModel = super::FileSystemSortProxyModelImpl;
+
         #[qobject]
         #[base = QFileSystemModel]
         #[qml_element]
@@ -23,6 +49,40 @@ pub mod qobject {
         #[qproperty(QString, file_path, cxx_name = "filePath")]
         #[qproperty(QModelIndex, root_index, cxx_name = "rootIndex")]
         type FileSystem = super::FileSystemImpl;
+    }
+
+    // Export QSortFilterProxyModel functions from Rust
+    // https://doc.qt.io/qt-6/qsortfilterproxymodel.html
+    unsafe extern "RustQt" {
+        #[inherit]
+        #[cxx_name = "setSourceModel"]
+        unsafe fn set_source_model(
+            self: Pin<&mut FileSystemSortProxyModel>,
+            source: *mut QAbstractItemModel,
+        );
+
+        #[cxx_override]
+        #[cxx_name = "filterAcceptsRow"]
+        const fn filter_accepts_row(
+            self: &FileSystemSortProxyModel,
+            source_row: i32,
+            source_parent: &QModelIndex,
+        ) -> bool;
+    }
+
+    // Custom initialization logic.
+    impl cxx_qt::Initialize for FileSystemSortProxyModel {}
+
+    // Export QFileSystemModel functions from Rust
+    // https://doc.qt.io/qt-6/qfilesystemmodel.html
+    unsafe extern "RustQt" {
+        #[inherit]
+        fn index(
+            self: Pin<&mut FileSystem>,
+            row: i32,
+            col: i32,
+            parent: &QModelIndex,
+        ) -> QModelIndex;
 
         #[inherit]
         #[cxx_name = "setRootPath"]
@@ -43,17 +103,35 @@ pub mod qobject {
     }
 }
 
-use cxx_qt_lib::{QModelIndex, QString};
-use dirs;
-use log::warn;
-use std::fs;
-use std::io::BufRead;
-use syntect::easy::HighlightFile;
-use syntect::highlighting::ThemeSet;
-use syntect::html::{
-    IncludeBackground, append_highlighted_html_for_styled_line, start_highlighted_html_snippet,
-};
-use syntect::parsing::SyntaxSet;
+pub struct FileSystemSortProxyModelImpl {
+    inner: *mut qobject::FileSystem,
+}
+
+impl Default for FileSystemSortProxyModelImpl {
+    fn default() -> Self {
+        let model = Self {
+            inner: std::ptr::null_mut(),
+        };
+        model
+    }
+}
+
+impl qobject::FileSystemSortProxyModel {
+    pub const fn filter_accepts_row(&self, _source_row: i32, _source_parent: &QModelIndex) -> bool {
+        true
+    }
+}
+
+impl cxx_qt::Initialize for qobject::FileSystemSortProxyModel {
+    fn initialize(self: core::pin::Pin<&mut Self>) {
+        let mut fs = FileSystemImpl::default();
+        unsafe {
+            let model: *mut FileSystemImpl = std::ptr::from_mut(&mut fs);
+            let m: *mut QAbstractItemModel = model as *mut QAbstractItemModel;
+            self.set_source_model(m);
+        }
+    }
+}
 
 // TODO: Impleent a provider for QFileSystemModel::setIconProvider for icons.
 pub struct FileSystemImpl {