[This article was published on 17 month 0 by the author of the little black box @ dry bone Xunxing, and may not be reproduced without permission!] 】

1.ilovePDF https://www.ilovepdf.com/

iLovePDF is a powerful online PDF processing tool, designed to provide users with convenient and efficient PDF file management and conversion services. The platform does not require any software to be downloaded and installed, and users can easily complete various PDF creations through a browser.

2.Quicker   https://getquicker.net/

A desktop automation tool designed to help users be more productive with simple scripts and shortcuts.

3.Rufus  https://rufus.ie/zh/

Rufus is a software developed by Irish developer Pete Batad to make bootable USB installation disks. The software supports multiple Chinese, the interface is simple and feature-rich, no installation is required, no ads, and easy to use. The main features of Rufus include formatting and creating a USB boot disk, which can be easily written as a system image to a USB flash drive for system installation or recovery.

4.Billfish https://www.billfish.cn/

Billfish is an asset management tool for designers and creatives designed to help you organize, manage, and find all kinds of design assets efficiently. It supports a wide range of file formats, including PNG, JPG, PSD, AI, GIF, SVG, EPS, and CDR, among others. Whether it's day-to-day design work or gathering inspiration, it offers great convenience and support.

5. Ground Books https://www.ditushu.com/

An online collaboration, visualization and reading platform for the humanities, aiming to provide scientific research institutions, individual authors, humanities enthusiasts and current students with lightweight structured knowledge base management, query, analysis, collaboration, sharing and discussion services.