Freesound

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.

**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.

Z-Library - 保持与全球最大的电子书图书馆联系。免费查找并下载电子书。官方Z-Library。

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。