GDM - Go Download Manager

High-Speed desktop download manager in Go.

GDM helps you download files faster with parallel chunks, and pause/resume controls in a desktop app.

Features

• Parallel chunk downloads that provide up to 3-5x faster downloads
• Pause, resume, and cancel per download
• Resume interrupted downloads automatically
• Live progress and speed display
• Auto fallback to single-stream mode if server does not support ranges

Quick Start

git clone https://github.com/Anarghya1610/Go-Download-Manager.git
cd Go-Download-Manager
./GDM

In the app:

1. Paste download URL
2. Choose destination folder
3. Click Add Download
4. Manage with Pause / Resume / Cancel

Screenshots

Advanced (Optional)

• Environment variable: GDM_WORKERS
• Use this only if you want to manually control worker count

PowerShell example:

$env:GDM_WORKERS=12
./GDM

Resume Data

• tasks.json: saved task list
• <output>.meta: chunk progress for resume

.meta is removed after a successful download.

Troubleshooting

• Download is not parallel: server likely does not support range requests
• Too many retries: lower GDM_WORKERS or let the program decide worker count