Parallel downloads
Download over HTTP, HTTPS, FTP and FTPS, with parallel connections where the server supports them.
Free IDM alternative
A free, open-source alternative to Internet Download Manager
Download Engine is a free download manager for Windows, macOS and Linux, with a familiar layout inspired by Internet Download Manager (IDM). There is no trial or license key to manage, and the source code is open under the MIT license.
What you get
The everyday download tools,
free to use.
Pause, resume and recover
Pause and resume transfers, retry temporary failures and recover unfinished downloads after restarting the app.
Resume depends on the server and the file remaining compatible.
Queues and schedules
Group downloads into named queues with their own limits, then schedule a one-time start or a recurring download window.
Optional torrents
Open torrent files and magnet links, select files, pause and resume, and opt in to sharing after completion. Multi-file antivirus scans and completed-folder moves are supported.
Features and torrent risk noticeBrowser integration
Send links from Chrome, Edge, Brave and Firefox, capture matching file downloads and choose links from a page.
Video downloads
Review the quality and audio of supported public videos and compatible HLS and DASH streams before downloading.
See supported sites and limitsControl and checks
Set speed limits and data quotas, verify SHA-256 checksums, find files with Web Grabber and automate work with Lua scripts.
Before you switch
Honest answers.
Is it a complete replacement for IDM?
Not completely. Download Engine covers everyday file and video downloads, but it does not offer complete IDM feature parity. Try it on the downloads you rely on before you switch.
Is Download Engine connected to IDM?
No. Download Engine is an independent project. It is not affiliated with Internet Download Manager or its publisher.
Does it really cost nothing?
Yes. The application is free and open source under the MIT license. Bundled components, including FFmpeg, have their own licenses.
Which systems does it run on?
Windows x64 (installer or portable ZIP), macOS Apple Silicon and Intel, and Linux x64. Native packages include FFmpeg. See the platform guide for requirements, signing status and differences. There is no Android package.
How do I connect my browser?
On Firefox, install the extension from Firefox Add-ons, then choose Connect browser in Tools → Browser setup. For Chrome, Edge and Brave, store approval is pending, so Browser setup shows how to load the extension manually for now.
Why does Windows show a warning?
The Windows packages are currently unsigned, so Windows may show an unknown-publisher warning. Compare your download with the published SHA-256 checksums before you run it.
Ready when you are
Try it on your next download.
Internet Download Manager and IDM are named only to describe what this software is an alternative to. Download only content you are authorized to save.