Internet Download Manager is a tool for drastically increasing your download speeds and resuming/scheduling downloads, including the capability to download any streaming video.
Free Download Manager (FDM) is a robust download management program that permits downloading files and whole websites from any remote server via FTP, HTTP, and HTTPS.
HTTP Downloader is an Open Source download manager that permits you to maximize download throughput via high-performance input/output completion ports (IOCP).
Fido is a PowerShell script from the creator of Rufus featuring a simple graphical interface used to download Windows 10 and 8.1 retail ISOs. Fido is now included with Rufus. Video tutorial available.
Ninja Download Manager is an Internet Download Manager & Accelerator that not only dramatically increases download speed but also allows you to resume and restart stopped/broken downloads.
Microsoft Windows ISO Download Tool lets you download all versions of Microsoft 7, 8.1, and 10 and Office 2010, 2013, 2016, and 2019 directly from Microsoft's servers. Video walkthrough available.
Xtreme Download Manager provides you with an advanced and powerful tool that will increase download speed up to 500% in some cases as well as resume broken/dead downloads, integrate with the browser of your choosing, capture videos and more.