Internet Download Manager has been the default Windows downloader for two decades. It still segments files into chunks, still hands off from the browser cleanly, and still wins almost every “fastest download manager” benchmark. It also still costs around thirty dollars after a thirty-day trial, runs only on Windows, and ships an interface that has barely changed in fifteen years. People searching for Internet Download Manager alternatives almost always want one of three things: a free version of the same speed boost, a client that works on macOS or Linux, or a modern UI that does not feel like a screenshot from 2009. We looked at seven that cover all three angles.
Quick comparison
| App | Best for | License | Platforms | Standout |
|---|---|---|---|---|
| Free Download Manager | The default migration | Free | Windows, macOS, Linux | Closest IDM replacement |
| JDownloader 2 | One-click hosters | Free, open-source | Windows, macOS, Linux | Filehoster automation |
| Xtreme Download Manager | Open-source IDM clone | Free, open-source | Windows, macOS, Linux | Multi-segment, browser integration |
| Persepolis | aria2 with a GUI | Free, open-source | Windows, macOS, Linux | Lightweight, scriptable backend |
| Motrix | Modern multi-protocol | Free, open-source | Windows, macOS, Linux | Clean Electron UI, BT support |
| Neat Download Manager | Simple cross-platform | Free | Windows, macOS | No bloat, no signup |
| aria2 | Command line power | Free, open-source | Windows, macOS, Linux | Scripts, headless, every protocol |
Why people leave IDM
The trial gets nagging fast. After thirty days, IDM stops downloading until you pay. A one-time license is around thirty dollars, but the trial behavior pushes many people to look for free alternatives before they ever evaluate the paid product.
It is Windows only. There is no Mac build, no Linux build, and no plan for one. A two-machine household with a Mac is stuck.
The interface is genuinely dated. Tabs, gradients, and toolbar icons from an earlier era. It works, but newer downloaders look and feel a generation ahead.
The browser integration is install-time invasive. IDM injects an extension and a hook into Windows that intercepts downloads at the network layer, and some browsers (especially newer Chromium and Firefox builds) regularly need a reinstall when extensions break.
The alternatives
Free Download Manager: the default migration
FDM is the closest one-to-one IDM swap. Multi-segment downloads, browser integration via extension, scheduling, queue limits, and pause-and-resume from the system tray. The UI is modern (a sidebar of categories plus a transfer list) and the macOS and Linux builds are first-class, not afterthoughts.
Where it falls short: Closed-source. After a 2024 security incident on a Linux installer was disclosed, careful users verify the checksum on first install. Bundles a torrent module that some users will never use.
Pricing: Free. No paid tier.
vs IDM: Same speed, broader platform support, modern UI, zero cost.
Migrating from IDM: Install the browser extension and uninstall IDM’s. Past downloads do not migrate, but FDM picks up new ones immediately.
Download: freedownloadmanager.org
Bottom line: Most readers stop here.
JDownloader 2: one-click hosters
JDownloader’s specialty is filehoster automation. Paste a batch of links from Rapidgator, Mega, MediaFire, or any of dozens of others, and JDownloader queues them, handles captchas via plugins, resumes interrupted transfers, and respects per-host rate limits. The plugin developer community keeps it current.
Where it falls short: Java-based, so it carries a JVM with it and starts slowly. The interface is dense and assumes you know what a hoster is. Asks about bundled ads during install (decline them).
Pricing: Free and open-source.
vs IDM: Different purpose. IDM speeds up any download; JDownloader is built for hoster-heavy workflows.
Migrating from IDM: Use both side by side. JDownloader for hosters, IDM/FDM for direct downloads.
Download: jdownloader.org
Bottom line: The right pick if your downloads come from filehosters.
Xtreme Download Manager: open-source IDM clone
XDM aims to be IDM, open-source. Multi-segment downloads, browser integration for Chromium and Firefox, video sniffing from streaming pages, scheduler, queue. The UI is JavaFX and looks reasonable if not modern.
Where it falls short: Java dependency. Less polished than FDM. Browser extension occasionally needs manual reinstall after Chrome updates.
Pricing: Free and open-source.
vs IDM: Same feature set, no cost, cross-platform.
Migrating from IDM: Install the browser extension, replace IDM’s.
Download: xtremedownloadmanager.com
Bottom line: The ideologically pure swap for users who want open-source IDM.
Persepolis: aria2 with a GUI
Persepolis wraps aria2 (a fast command-line downloader) in a Qt interface. The result is a lightweight downloader that supports HTTP, HTTPS, FTP, SFTP, magnet links, and metalinks. Resume, scheduling, browser integration, and queue management all work. Because the backend is aria2, scripts and CLI tools can drive the same transfers.
Where it falls short: Less browser-integration polish than FDM. UI is functional, not pretty.
Pricing: Free and open-source.
vs IDM: Lighter, scriptable, cross-platform. Less hand-holding.
Migrating from IDM: Install Persepolis and its browser extension.
Download: persepolisdm.github.io
Bottom line: Pick this if you want aria2’s reliability without learning the CLI.
Motrix: modern multi-protocol
Motrix is an Electron-based downloader with a polished interface. HTTP, FTP, BitTorrent, and magnet links in one app. The UI emphasizes a clear queue and per-download progress detail. Browser integration works via a Chrome and Firefox extension.
Where it falls short: Electron means a heavier RAM footprint than native clients. Updates have been less frequent in recent years, so verify the latest release date before adopting.
Pricing: Free and open-source.
vs IDM: Broader protocol coverage, modern UI, cross-platform.
Migrating from IDM: Install and replace the browser extension.
Download: motrix.app
Bottom line: The pick if the UI matters and you want torrent support in the same window.
Neat Download Manager: simple cross-platform
Neat Download Manager is what its name says: a simple multi-segment downloader with browser integration, scheduling, and resume. No torrent module, no captcha solver, no plugin marketplace. Just downloads, plus a clean interface.
Where it falls short: Closed-source. Interface is basic by design. Updates are infrequent. No Linux build.
Pricing: Free. No paid tier.
vs IDM: Smaller scope, free, also on macOS.
Migrating from IDM: Install, then uninstall IDM. Existing downloads do not transfer.
Download: neatdownloadmanager.com
Bottom line: The pick for people who want only the download manager part of IDM, with no extras.
aria2: command line power
aria2 is the CLI engine that powers Persepolis and many other GUI wrappers. By itself it handles HTTP, FTP, SFTP, BitTorrent, magnet, and metalinks, with multi-segment, multi-source, and resume built in. A single config file controls everything; a JSON-RPC interface lets remote tools queue jobs.
Where it falls short: No GUI. Documentation rewards patience.
Pricing: Free and open-source.
vs IDM: Engine for engineers. Faster than any GUI on big transfers, headless by default.
Migrating from IDM: Write a one-line shell function that wraps aria2c with your usual flags.
Download: aria2.github.io
Bottom line: The right pick if you live in a terminal.
How to choose
Pick Free Download Manager if you want IDM behavior on Windows, Mac, or Linux without paying.
Pick JDownloader 2 if most of your downloads come from filehosters that need captcha or rate-limit handling.
Pick Xtreme Download Manager if you specifically need the open-source IDM equivalent.
Pick Motrix if you also want torrent support in the same app and care about the interface.
Pick aria2 (or Persepolis for a GUI on top) if you script your downloads or want a small footprint on a server.
Stay on IDM only if you have already paid the lifetime license and use specific features (the per-site speed limits, the video grabber, the Windows shell integration) that none of these replicate exactly.
FAQ
Is Free Download Manager really as fast as IDM? On most connections the bottleneck is the server, not the client. With multi-segment downloads enabled and the same segment count, the two finish a large file in close to the same time. Differences show up only on hosts that allow many parallel connections per IP.
Will my browser still hand off downloads automatically? Yes, after you install the matching browser extension. Each downloader has a Chrome and Firefox extension that intercepts large or video downloads the same way IDM’s does.
Can I import my IDM download list? Not directly. IDM keeps its history in a proprietary database. Most users finish active IDM downloads first, then install a new manager for the next round.
Is there a free version of IDM itself? No. IDM has a 30-day trial after which it stops working until you buy a license. The “free version” search query usually leads to pirated keys; the legitimate free options are on this list.
Which alternative works on macOS and Linux? Free Download Manager, Xtreme Download Manager, Persepolis, Motrix, and aria2 all run on macOS and Linux. Neat Download Manager covers macOS but not Linux.
