Zhangzhang Group Buy is a platform under Chinaz for group-buy deals on licensed source code, software, and servers, similar to a vertical software marketplace for webmasters and small and medium-sized businesses. It covers categories such as source code, SaaS services, licensed software, plugins/templates, cloud computing/security, and promotion/marketing, and provides merchant onboarding, coupons, group-buying, flash sales, and escrow-style transactions.

It is not itself a self-hostable system. If you purchase source code or a SaaS agency/reseller product, deployment requirements, server configuration, secondary development capability, and after-sales support all depend on the specific merchant’s description. Users in China should carefully check compatibility and provider support for WeChat Mini Programs/Official Accounts, payment, SMS, ICP filing, domestic cloud/CDN, and related services.