SuiteCRM - Open source CRM for the world

This Tradexchange provides fast currency exchanges using real-time rates. Ideal for personal and business use, it supports multiple currencies and delivers instant conversion results. Perfect for managing finances or making international transactions.

From Berlin to Germany and Europe - an open source CRM Solution mainly for small and medium-sized businesses: Visit https://www.berlicrm.de/

General Ledger and Journal Accounting Package and API for Laravel

Economy system for MineCraft servers, with multi-platform, multi-currency and data-sync supported, aims to build the next generation of new economic system.

Secure C++ banking system with encrypted authentication, multi-currency support, and robust transaction processing

Drupal 8 Commerce multi currency module

A BIP-44 multi crypto currency llibrary

OpenMVM is an open-source multi-vendor e-commerce marketplace platform.

Multi-currency keyless wallet

Espresso Wallet - A free and open source multi currency wallet PWA

Experimental personal budget calculator

API for the multi-currency Kauri Wallet

Fixed-point multi-currency types for Postgres (contrib module)