Alternatives of IDM
JDownloader is an open-source free software for downloading things from the internet, it has a huge list of developers who work on JDownloader and make the downloads as faster as they should be. Same like Internet Download Manager you can start, pause, resume, and stop downloads. You can also schedule your downloads and can save bandwidth if you uses a limited internet device. It makes the downloads up to 10% faster and saves your precious time.
2. Download Accelerator Plus (DAP)
DAP gives you the fast acceleration on each download with complete set of download tools.