I Got Curious About Internet Download Manager… So I Built My Own

Muhammad Bahawal — Thu, 05 Mar 2026 17:27:20 +0000

For years I used Internet Download Manager like everyone else.
It sat quietly in the background, making downloads faster, detecting videos, and managing files.
But one day I asked myself a simple question:
How does this actually work behind the scenes?
Instead of searching for the answer, I decided to try something more interesting.
I tried building my own download manager.
What I Wanted to Build

My goal was simple: understand the logic behind a real download manager.

So I started experimenting with features like:

multi-connection downloads

download pause & resume

real-time speed tracking

file segmentation

browser download detection

What looked simple from the outside turned out to be a pretty interesting challenge.

One Thing That Fascinated Me

Download managers speed things up using multi-thread downloads.

Instead of downloading a file in one stream, the file is split into parts and downloaded simultaneously.

Then the pieces are merged into the final file.

To users it just looks like a faster progress bar.

But behind that progress bar there’s a lot happening.

Challenges

The hardest part wasn't downloading files.

It was making the system stable.

Things like:

resuming downloads correctly

handling network interruptions

keeping accurate speed tracking

managing multiple downloads at once

Small bugs could break the whole flow.

But solving those problems made the project much more rewarding.

** The Best Moment**

The moment my browser detected a download, passed it to my software, and the file started downloading successfully…

That moment felt different.

Because instead of just using a tool, I had actually built one.
What I Learned

Building tools you normally use as a user changes your perspective.

You start seeing the engineering decisions hidden behind simple interfaces.

And sometimes the best way to understand software is simply:

Try building it yourself.

Who Is Muhammad Bahawal? iOS, macOS & Web Developer

Muhammad Bahawal — Mon, 02 Feb 2026 05:41:41 +0000

Introduction
Muhammad Bahawal is a professional iOS developer, macOS developer, and web developer with hands-on experience in building production-level applications and scalable digital solutions.

With a strong focus on Apple ecosystem development and modern web technologies, Muhammad works on creating clean, efficient, and user-focused software for real-world use cases.
What I Do

I specialize in developing applications across multiple platforms with a strong emphasis on performance, maintainability, and user experience.

iOS Development

Swift
UIKit & modern iOS architectures
Firebase integration
API-based applications
App Store–ready production apps

macOS Development

Native macOS application development
Swift & AppKit
Desktop-focused performance optimization
Cross-platform logic sharing where applicable

Web Development

Frontend & backend web applications
REST APIs
Scalable and maintainable codebases
Modern JavaScript frameworks and tools
My Development Philosophy
I believe good software is built with:
Clear architecture
Clean, readable code
Scalability in mind
Real user problems as the priority

Rather than focusing only on features, I focus on long-term maintainability and performance, ensuring that applications grow smoothly as requirements evolve.

Real-World Experience

I have worked on:

Mobile applications published on the Apple App Store

Full-stack web applications

API-driven systems

Projects involving real users and production constraints

Each project strengthens my understanding of how software behaves outside tutorials and demos, in real production environments.

Technologies I Work With

Swift
UIKit
AppKit
Firebase
REST APIs
JavaScript
Web application frameworks
Git & version control systems

Why I Share My Journey

I actively share my development journey to:

Document real-world experiences

Help other developers learn from practical examples

Contribute meaningful content to the developer community

My content focuses on clarity, honesty, and real implementation details, not just surface-level explanations.

Let’s Connect

LinkedIn: https://www.linkedin.com/in/muhammadbahawal/

YouTube: https://www.youtube.com/@MuhammadBahawalOfficial

GitHub / Portfolio: https://github.com/MuhammadBahawal

Written by

Muhammad Bahawal
iOS Developer | macOS Developer | Web Developer

DEV Community: Muhammad Bahawal

I Got Curious About Internet Download Manager… So I Built My Own

Who Is Muhammad Bahawal? iOS, macOS & Web Developer