This backend of the IDE is native code while the UI is built with a custom browser engine whose binary size is less than 1MB. All file operations are asynchronous and in background, making the app very responsive. There are parallel searches and compiling, using all computing cores. Dual pane design with each pane having multiple tabs. You can double click a symbol while holding down Ctrl to go to its definition and open the file in a specified pane. Code folding is syntax based. And many more.