Based on our record, Steam Inventory Helper should be more popular than GoCDKeys. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I think I used steam in conjunction with https://steaminventoryhelper.com/. Source: over 1 year ago
Only thing I can think of would be https://steaminventoryhelper.com/ But I don't think it's open source :(. Source: almost 2 years ago
Don’t try to take on giants like Google Shopping or Shopzilla. Instead, find your niche — one that you’re already familiar with — and start small. Examples of smaller niche-centered price comparison websites are Gocdkeys that compares gaming products, Pricechecker which compares UK prices, and Farecompare that compares flight prices. Source: almost 3 years ago
Augmented Steam - Enhanced Steam fork by IsThereAnyDeal.
GG.DEALS - Very good and clear site for best deals.
Enhanced Steam - A Chrome and Firefox browser extension that enhances the Steam storefront with all kinds of extra...
AllKeyShop - Price comparison service for CD keys and game product codes.
Steam Tools Hub - A set of Steam related WebApps built around trading cards, emoticons and backgrounds.
IsThereAnyDeal - "When the price is right, you will play all night."