our note taking app helps you capture and prioritize ideas, projects and to-do lists, so nothing falls through the cracks. start your free trial today!

stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

downloadhelper: the easy way to web videos. download tons of videos from most of youtube like sites.

obsidian is the private and flexible note‑taking app that adapts to the way you think.

adblock is one of the most popular ad blockers worldwide with more than 60 million users on chrome, safari, firefox, edge as well as android. use adblock to block all ads and pop ups. adblock can also be used to help protect your privacy by blocking trackers. adblock blocks ads on facebook, youtube, and all other websites. download it for free now!

collaborate for free with online versions of microsoft word, powerpoint, excel, and onenote. save documents, workbooks, and presentations online, in onedrive. share them with others and work together at the same time.

sourceforge provides free & fast open source software downloads and development, and business software reviews and comparisons featuring the largest open source and business software directory.

掘金是面向全球中文开发者的技术内容分享与交流平台。我们通过技术文章、沸点、课程、直播等产品和服务，打造一个激发开发者创作灵感，激励开发者沉淀分享，陪伴开发者成长的综合类技术社区。