diff --git a/modules/core/applications.nix b/modules/core/applications.nix
index 8d1efae..10103a5 100644
--- a/modules/core/applications.nix
+++ b/modules/core/applications.nix
@@ -8,6 +8,7 @@
 
   environment.systemPackages =
     lib.optionals config.bchmnn.collections.cli-utils.enable [
+      pkgs.file # program that shows the type of files
       pkgs.pciutils # a collection of programs for inspecting and manipulating configuration of pci devices
       pkgs.usbutils # tools for working with usb devices, such as lsusb
       pkgs.lshw # provide detailed information on the hardware configuration of the machine
@@ -39,6 +40,8 @@
       pkgs.gcc13
       pkgs.clang
       pkgs.universal-ctags # a maintained ctags implementation
+      pkgs.unifdef # selectively remove c preprocessor conditionals
+      pkgs.doxygen # source code documentation generator tool
       pkgs.rustc
       pkgs.cargo # downloads your rust project's dependencies and builds your project
       pkgs.go # go programming language