BDE4

BDE4 is an online community and discussion forum centered on technology, software, and digital content sharing. Founded in 2016, the platform is headquartered in Hangzhou, Zhejiang Province, and is managed by a private company whose name is not publicly disclosed. The community has cultivated a dedicated following of approximately 15 million registered users, with a significant portion being software developers, IT professionals, and digital artists. The platform's revenue is generated through a combination of premium membership subscriptions and targeted advertising. Premium members gain access to an ad-free browsing experience, enhanced cloud storage for personal files, and exclusive access to special forum sections. Technically, the forum is built on a custom PHP-based framework that supports plugins for various functions, including a LaTeX rendering engine for mathematical formulas and code syntax highlighting for multiple programming languages. A key technical aspect is its decentralized file-sharing protocol, which allows users to share large files directly within threads without external hosting. The platform hosts over five million discussion threads and 50 million individual posts. It is known for its moderation team, composed of approximately 50 volunteer super-users who enforce community guidelines and handle content disputes.