Resources

ChinaTextbook

An open-source mathematics textbook project dedicated to promoting educational equity, offering PDF resources from primary school to university levels. It features automated merging of split PDF files, serving families and students worldwide.

DataTool.vip

DataTool.vip is a powerful free online video downloader supporting over 40 platforms including TikTok, Instagram, YouTube, and Twitter. It offers 4K resolution downloads, watermark removal, and fast processing. No software installation required - simply paste a video link to download.

混合盘

混合盘是一款规则引擎APP,可以将任何搜索网站制作成规则,供用户聚合搜索使用,混合盘搜索是一个百度网盘、夸克网盘、阿里云盘资源搜索引擎，提供百度网盘资源搜索、夸克网盘资源搜索、阿里云盘资源搜索等服务。

Z-library

Go To Library offers cross-disciplinary literature search, one-click download, and management services, assisting college students and researchers in efficiently obtaining academic materials. Experience it now to enhance your research efficiency!

YouTube to MP3

Convert YouTube videos to MP3 files in seconds with AISEO YouTube Audio Downloader. Enjoy free, high-quality YouTube music without ads, watermarks, or registration.

Filmot

filmot.com offers a one-stop navigation for free videos and movie resources, featuring intelligent search and categorization, real-time updates on popular charts, and an ad-free experience to help you quickly find high-quality content. Try it now!

MediaGo

跨平台视频提取工具：支持流媒体下载、视频下载、m3u8 下载及 B站视频下载，提供 Windows 和 Mac 桌面客户端。Cross-platform video extraction tool: Supports streaming download, video download, m3u8 download, and Bilibili video download, with desktop clients for Windows and Mac.

YouTube Downloader

Download Any Video for Free with YTD Video Downloader ✓ Available for Windows, Mac, iOS and Android ✓ Free Video Downloader for YouTube and more

4K Download

4KDownload supports HD video and audio downloads from multiple platforms like YouTube and Vimeo, offering batch downloads, subtitle fetching, and audio extraction features. With an ad-free and simple interface, experience efficient downloading now.

Freesound

Freesound offers a vast collection of free, high-quality sound effects, supporting search, download, and sharing, ideal for music production, film editing, and more. Experience now and join the global sound sharing community!

SeedHub

SeedHub 是一个无需注册、无广告的高清影视资源下载平台，每日更新 4K、蓝光、无损等高画质资源。支持搜索、筛选、磁力链接下载，兼容 PC 和移动端，体验简洁流畅。

Student Free Resources

**edu.52it.de** is a one-stop hub for students to access powerful tools, AI services, and premium software at little or no cost—just by verifying student status. It’s a must-bookmark site for every student who wants to boost productivity without breaking the bank.

bestvideow

Best Video Downloader is a powerful and free video parsing and downloading tool. It supports high-definition watermark-free downloading of videos from over 100 popular video platforms worldwide, including Bilibili, Douyin, Kuaishou, Weibo, Xiaohongshu, TikTok, YouTube, etc. The Best Video downloader does not require registration. It is easy to operate and has a fast download speed. It is an ideal choice for video downloading and moving.