The best Video Downloader alternative to NewPipe is yt-dlp, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to NewPipe and many of them are Video Downloaders so hopefully you can find a suitable replacement. Other interesting Video Downloader alternatives to NewPipe are Invidious, youtube-dl, Grayjay and Video DownloadHelper.
Command line program that's a youtube-dl fork that downloads videos from YouTube and over 1000 sites. The main focus of this project is adding new features and patches while also keeping up to date with the original project.
Open-source YouTube alternative offers ad-free browsing with no registration or JS needed. Features video download, audio mode, subscription tools, and multi-language support. Export/import data, manage playlists without Google account, and access embedded support.
A platform-independent command-line program for downloading videos from YouTube and 1000+ sites. Supports playlists, subtitles, and multiple formats.
Last version was in December 2021. An active fork is 
yt-dlp.
it's multi platform altough GUI-less (but there is wrapper for it)
Multi-platform streaming client supporting YouTube, Twitch, Odysee, Rumble, PeerTube, Dailymotion, Patreon, Kick, and more, featuring a unified feed, playlist import, live chat, background play, offline downloads, local playlist management, and device casting.
It supports a lot of sources and a combined feed, is privacy focused, and has features like backgroundplay. In addition it allows for deeper integration with some services(activity sharing/watch status) etc.
Grayjay works both on mobile and desktop, supports syncing between them and has an experience much closer to Youtube.
Browser extension for Chrome and Firefox that allows users to download audio and video files from numerous websites. Detects downloadable content automatically, signals with animated icon, and offers convenient download menu. Includes batch downloads and file conversion.
Provides an alternative Android streaming experience for various video platforms, featuring ad-free viewing, SponsorBlock, danmaku chat overlays, advanced filtering, playlist downloads, music player mode, AV1/VP9 support, enhanced privacy, and background playback.
ClipGrab is a free downloader and converter for YouTube, Vimeo, Metacafe, Dailymotion and many other online video sites.
Tartube is a GUI front-end for youtube-dl, partly based on Youtube-DLG and written in Python 3 / Gtk 3.
Android app using a privacy-focused frontend for video streaming, letting users watch and download from YouTube, sync playlists, skip ad segments, manage subscriptions, track views, use background playback, filter search, view comments, and access live streams.
SnapTube offers quick, ad-free video and music downloading directly from YouTube in multiple resolutions. It features direct MP3 downloads with no extra encoding or registration required. Manage downloads easily and explore content through keyword search and integrated sharing.
Download and save videos from popular streaming platforms directly to Android devices for offline viewing, select different video resolutions, store content on SD card, and batch download files. Free to use with ads and available through alternative app markets.
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NewPipe it's an app, not a tool same as youtube-dl.