Gudong
In-depth reviewGudong.app is a Singapore-based PWA connecting collectors of high-end Chinese antiques across Southeast Asia, Europe, and the US. It enables browsing of porcelain, jade, and calligraphy, facilitating direct contact between buyers and sellers. The platform also offers free utility tools for Asian art collectors.

Gudong, as it opens in a browser tab.
Not sure how to add Gudong to your home screen? Step-by-step for Chrome, Safari, Firefox and Edge — it takes about ten seconds, and there is no app store involved.
Own Gudong? Have us re-run this measurement — we open it in a real browser, wait for the service worker, and send you what it cached.
How to install Gudong as a PWA
Why we recommend Gudong
Gudong.app stands out by offering a decentralized network for antique discovery and collector connections, with a clear focus on Chinese antiques. It directly links buyers with sellers via WhatsApp for inquiries and transactions, taking 0% commission. Beyond browsing, it provides valuable, free utility tools for collectors, such as a Chinese Reign Mark Date Calculator, a Ganzhi to Gregorian Converter, and a Cultural Dynasty Lookup. This combination of a discovery platform with practical tools, and its international reach across multiple countries, makes it a unique resource for serious collectors.
Best use cases
Best for: Serious collectors seeking high-end Chinese antiques and direct engagement with sellers without intermediary commissions. Ideal for buyers and sellers in Singapore, Malaysia, Indonesia, Thailand, the US, UK, and Europe. Also excellent for collectors needing free online tools to research Chinese reign marks, calendar conversions, and ancient dynasty information.
Honest limitations
Gudong.app is not for: Users seeking official authentication or appraisal services directly from the platform; it supports third-party consultation but does not provide guarantees. It's also not for casual buyers looking for a platform that handles payments or logistics, as transactions and negotiations occur directly between buyers and sellers. The platform focuses on high-end Chinese antiques, so it's not suitable for other types of collectibles.
Are you the maker of Gudong? Claim this listing →
Similar to Gudong

A searchable database of Pokemon Trading Card Game cards built for speed, aimed at players and collectors who need to look cards up quickly. It emphasizes a fast search experience and includes offline support, so card lookups stay available even without a network connection.
ArcherLab is a web development side project hub, showcasing a collection of prototypes built by a single developer. It features 19 diverse projects across five categories, ranging from web-based games and chat applications to utility tools and educational content. The platform embodies the motto 'Logic × Design, in Practice,' documenting experiments and development logs.
FileTools Kit provides in-browser tools for merging and splitting PDFs, converting images, and generating resume PDFs. Files remain in your browser tab, ensuring privacy. It offers a suite of utilities including QR code generation, SVG conversion, and hash calculations.
JustImpose is a free, browser-based PDF imposition tool for print shops and designers. It arranges PDF pages for booklets, n-up layouts, step & repeat, and posters. It handles page order, gutters, bleed, and marks with a live preview, driven by a real prepress engine. PDF processing occurs locally in your browser.
A free Bengali (Bangla) calendar PWA offering daily tithi, nakshatra, and panchang calculated using the traditional Bishuddha Siddhanta method — the same reference published Bengali panjikas use. Includes auspicious muhurta timings, daily rashifal, 15-day weather forecasts, and a growing collection
Checksum is a progressive web app that reads restaurant receipts, verifies line-item amounts, and splits bills between diners. Built with a mobile-first design, it displays receipt totals with expandable breakdowns showing subtotal, tip, and final amounts. The interface uses a dark theme with card-based layouts and safe-area insets for modern devices. Desktop users see a centered column instead of full-width stretching. Created by @magasine, it falls under utilities and finance categories.
Own a PWA? See the listing options — standard submission is free.