应用程序软件：
应用程序软件是根据用户请求运行或执行的软件类型之一。应用程序软件使用Java、c、c++等高级语言进行开发。应用软件是一种特定用途的软件，旨在执行组合在一起的某些任务。没有操作系统的应用软件是无法安装的。它的示例是 Photoshop、VLC 媒体播放器、Mozilla Firefox、Opera、Google chrome 等。
操作系统：
操作系统是一种计算机程序，充当用户和硬件之间的接口，并为计算机程序提供公共服务。计算机系统的整个过程或功能取决于操作系统。它是使用c++、c、汇编语言开发的。
操作系统执行多种任务，例如，它管理文件和目录的创建和删除、进程创建、删除、同步、内存分配和释放。操作系统还可以防止计算机系统受到未经授权的访问并保护资源、信息和数据。它的示例是 Microsoft Windows、Linux、Unix、DOS。总的来说，我们可以说，没有操作系统，计算机系统就什么都不是。
在上图中，我们可以清楚地看到系统和应用程序或软件依赖于操作系统，操作系统是用户和计算机硬件之间的接口。
应用软件和操作系统的区别：
| S.NO | Application software | Operating System |
|---|---|---|
| 1. | A computer program which is intended to perform some task classified along. | A system computer program that manages hardware and software resources and provides common services for computer programs. |
| 2. | Application software is downloaded form internet. | Operating system comes installed on the device purchased. |
| 3. | It is developed by using virtual basic, c++, c, java. | It is developed by using c++, c, assembly languages. |
| 4. | It is usually in Megabytes(MB). | While it is usually is Gigabytes(GB). |
| 5. | It is built to perform some specific tasks. | It works as interface between user and hardware and perform some variety of tasks like memory management, scheduling, process management etc. |
| 6. | It always depends upon operating system. | But it does not depend upon application software.it provides the path to execute or to run the application software. |
| 7. | It runs when the user desires to run the application. | it boots up when the user wants and run until the user switches off the machine. |
| 8. | It’s examples are Photoshop, VLC player etc. | It’s examples are Microsoft Windows, Linux, Unix, DOS. |