diff --git a/src/met/core-editor.cpp b/src/met/core-editor.cpp
new file mode 100644
index 0000000..74108f3
--- /dev/null
+++ b/src/met/core-editor.cpp
@@ -0,0 +1,75 @@
+#include "core-editor.h"
+
+EchidnaCoreEditor::EchidnaCoreEditor(QWidget *parent) : QPlainTextEdit(parent) {
+    LineNumberArea *lineNumber = new LineNumberArea(this);
+
+    QObject::connect(this, &EchidnaCoreEditor::cursorPositionChanged, &EchidnaCoreEditor::highlightCurrentLine);
+    QObject::connect(this, &EchidnaCoreEditor::updateRequest, &EchidnaCoreEditor::updateLineNumberArea);
+    QObject::connect(this, &EchidnaCoreEditor::blockCountChanged, &EchidnaCoreEditor::updateLineNumberAreaWidth);
+
+    this->highlightCurrentLine();
+    this->updateLineNumberAreaWidth(0);
+}
+
+EchidnaCoreEditor::~EchidnaCoreEditor(){
+    
+}
+
+int EchidnaCoreEditor::lineNumberAreaWidth(){
+
+}
+
+
+void EchidnaCoreEditor::lineNumberAreaPaintEvent(QPaintEvent *event){
+
+}
+
+void EchidnaCoreEditor::resizeEvent(QResizeEvent *e){
+
+    QPlainTextEdit::resizeEvent(e);
+
+    QRect contentsRect = this->contentsRect();
+    
+
+}
+
+    /**
+     *
+     * This function implements the functionaly that highlight the current line your cursor is currently on.
+     * 
+     * TODO: Implement support for multi-line editing.
+     *
+     */
+void EchidnaCoreEditor::highlightCurrentLine(){
+   
+    if(this->isReadOnly()){
+        return;
+    } else {
+        QList<QTextEdit::ExtraSelection> selections;
+
+        QTextEdit::ExtraSelection selection;
+
+        selection.format.setProperty(QTextFormat::FullWidthSelection, true);
+
+        QBrush selectionFormatBrush = selection.format.foreground();
+
+        
+    }
+    
+}
+
+
+
+/*
+
+the method `set_menubar` exists for reference `&components::echidna_editor::imp::EchidnaEditor`, but its trait bounds were not satisfied
+
+method cannot be called on `&components::echidna_editor::imp::EchidnaEditor` due to unsatisfied trait bounds
+
+note: the following trait bounds were not satisfied:
+      `components::echidna_editor::imp::EchidnaEditor: glib::IsA<gtk4::Application>`
+      which is required by `components::echidna_editor::imp::EchidnaEditor: gtk4::prelude::GtkApplicationExt`
+      `&components::echidna_editor::imp::EchidnaEditor: glib::IsA<gtk4::Application>`
+      which is required by `&components::echidna_editor::imp::EchidnaEditor: gtk4::prelude::GtkApplicationExt`
+
+*/
diff --git a/src/met/core-editor.h b/src/met/core-editor.h
new file mode 100644
index 0000000..f27dab1
--- /dev/null
+++ b/src/met/core-editor.h
@@ -0,0 +1,58 @@
+
+/*
+
+    Echidna Core Text Editor. This is the Monaco replacement for Echidna.
+
+    A lot of the code are ~~stolen~~ inspired from [Qt's Code Editor example](https://doc.qt.io/qt-5/qtwidgets-widgets-codeeditor-example.html), with added features to replicate the Visual Studio Code experience.
+
+*/
+
+#include <QtWidgets>
+
+class LineNumberArea : public QWidget
+{
+
+public:
+    LineNumberArea(EchidnaCoreEditor *editor) : QWidget(editor), coreEditor(editor)
+    {
+    }
+
+    QSize sizeHint() const override
+    {
+        return QSize(coreEditor->lineNumberAreaWidth(), 0);
+    }
+
+protected:
+    void paintEvent(QPaintEvent *event) override
+    {
+        coreEditor->lineNumberAreaPaintEvent(event);
+    }
+
+    EchidnaCoreEditor *coreEditor;
+};
+
+class EchidnaCoreEditor : public QPlainTextEdit
+{
+    Q_OBJECT
+
+public:
+    EchidnaCoreEditor(QWidget *parent = nullptr);
+    ~EchidnaCoreEditor();
+
+    void lineNumberAreaPaintEvent(QPaintEvent *event);
+    int lineNumberAreaWidth();
+protected:
+    void resizeEvent(QResizeEvent *event) override;
+
+private slots:
+    void highlightCurrentLine();
+    void updateLineNumberAreaWidth(int newBlockCount);
+    void updateLineNumberArea(const QRect &rect, int dy);
+
+    
+    LineNumberArea *lineNumber;
+};
+
+
+
+
diff --git a/src/met/editor.cpp b/src/met/editor.cpp
new file mode 100644
index 0000000..bacc01c
--- /dev/null
+++ b/src/met/editor.cpp
@@ -0,0 +1,64 @@
+#include "editor.h"
+#include <ui_echidna.h>
+#include <QtCore>
+#include <algorithm>
+#include <QtWidgets>
+
+EchidnaEditor::EchidnaEditor(QWidget *parent) : QMainWindow(parent),
+                                                ui(new Ui::EchidnaEditor)
+{
+
+    ui->setupUi(this);
+    this->setCentralWidget(ui->centralWidget);
+
+    QObject::connect(this, &EchidnaEditor::newFileOpened, &EchidnaEditor::handleNewFileOpened);
+}
+
+EchidnaEditor::~EchidnaEditor()
+{
+    delete ui;
+};
+
+void EchidnaEditor::actionOpenFolder()
+{
+    QString dir = QFileDialog::getExistingDirectory(this, 
+                "Add a Folder to Workspace",
+                QDir::homePath(),
+                QFileDialog::ShowDirsOnly);
+
+
+    std::vector<QFileSystemModel>::iterator foundExistingOpenedFolders = std::find_if(this->folders->begin(), this->folders->end(),
+                                                                                      [&](QFileSystemModel *iterator)
+                                                                                      {
+                                                                                          return iterator->rootPath() == dir;
+                                                                                      });
+    if (this->folders->end() != foundExistingOpenedFolders)
+    {
+    }
+    else
+    {
+        QFileSystemModel *model = new QFileSystemModel;
+        model->setRootPath(dir);
+
+    }
+
+
+}
+
+void EchidnaEditor::actionOpenFile(){
+    QStringList files = QFileDialog::getOpenFileNames(this,
+                    "Open Files",
+                    QDir::homePath()
+                    );
+
+    for(int i = 0; i < files.size(); ++i){
+        emit this->newFileOpened(files.at(i));
+    }
+}
+void EchidnaEditor::handleNewFileOpened(QString filename){
+
+    QFile file(filename);
+    
+
+
+}
\ No newline at end of file
diff --git a/src/met/editor.h b/src/met/editor.h
new file mode 100644
index 0000000..7aecf04
--- /dev/null
+++ b/src/met/editor.h
@@ -0,0 +1,39 @@
+#include <QMainWindow>
+#include <QtWidgets>
+#include <vector>
+namespace Ui
+{
+    class EchidnaEditor;
+}
+
+class EchidnaEditor : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    explicit EchidnaEditor(QWidget *parent = nullptr);
+    ~EchidnaEditor();
+
+private slots:
+
+    void actionOpenFolder();
+    void actionAddFolderToWorkspace(QString folder);
+    void actionOpenFile();
+    void handleNewFileOpened(QString file);
+
+signals:
+
+    void newFileOpened(QString file);
+    void newFolderOpened();
+private:
+    Ui::EchidnaEditor *ui;
+    std::vector<QFileSystemModel> *folders;
+    std::vector<QFile> *files;
+};
+
+
+
+
+
+
+
diff --git a/src/met/main.cpp b/src/met/main.cpp
new file mode 100644
index 0000000..cbaed37
--- /dev/null
+++ b/src/met/main.cpp
@@ -0,0 +1,14 @@
+#include <QApplication>
+#include "editor.h"
+
+int main(int argc, char *argv[]){
+
+    QApplication EchidnaEditorApp(argc, argv);
+
+    EchidnaEditor Editor;
+
+    Editor.show();
+
+    EchidnaEditorApp.exec();
+
+}
\ No newline at end of file