SHKeeper

SHKeeper is a self‑hosted, open‑source cryptocurrency payment processor that combines the functions of a payment gateway and a merchant. It lets businesses receive payments in a wide range of cryptocurrencies—including Bitcoin, Ethereum, Litecoin, Dogecoin, Monero, Ripple, Tron, Binance Coin, Solana, Polygon, Avalanche, and several stablecoins—without charging transaction fees or involving third‑party intermediaries. The system operates non‑custodially, supports partial and over‑payment handling, and can embed payment buttons or QR codes for easy checkout.

The platform is designed for e‑commerce sites, custom applications, and any environment that can run Docker‑based services on a Linux server. It provides a RESTful API for invoice creation, address retrieval, transaction queries, and multi‑payout tasks, as well as ready‑made modules for popular CMS and e‑commerce plugins such as WooCommerce, OpenCart, and PrestaShop. Wallet encryption and auto‑payment to cold storage enhance privacy and security, while users can set custom exchange rates, commissions, or fees.

SHKeeper is distributed under the GPL‑3.0 license, offers a free tier with no subscription requirements, and is marked as stable. Installation is performed via Helm charts on a Kubernetes cluster, and the project includes extensive documentation, a demo environment, and community support channels.