core-banking

Source-available, cloud-native ledger platform for building financial infrastructure — multi-currency, multi-asset, double-entry accounting with n:n transaction support.

Open-source core banking platform — 61 DDD domains with event sourcing, CQRS, and a schema-first GraphQL API. Multi-asset accounts, exchange, lending, compliance, x402/MPP machine payments, and a non-custodial wallet backend. Laravel 12 / PHP 8.4. Reference implementation: the GCU basket currency.

Simple Open Source implementation of a deposit account application (ASPSP core-banking) from adorsys

Angular back-office UI for Apache Fineract, the open-source core banking platform

OpenAPI spec plus PHP and Node.js clients for the Zung Member API: member login, loans, repayment schedules, loan applications, savings and wallets for SACCOs and MFIs.

A premium console-based banking management system built in C++. It simulates real-world banking operations including account management, transactions, loans, security features, and data handling using file-based storage and OOP principles.

A comprehensive, production-grade core banking system simulation built on the Jakarta EE 10 platform using EJB 4.0, Container-Managed Transactions (CMT), Hibernate JPA, Ehcache Second-Level Caching, Jakarta Security, and automated EJB Timer Services. Packaged as a multi-module Maven EAR application.

A high-reliability double-entry financial ledger microservice built with Java 25 & Spring Boot 4. Features database-level pessimistic write locking (SELECT ... FOR UPDATE), payment-grade HTTP idempotency key replay, Flyway migrations, OAuth2 JWT auth, and structured ECS logging.

Open-source core banking: customer onboarding, accounts, payments and a general ledger, configured and driven through one API.

Enterprise-grade Core Banking System (CBS) built with PostgreSQL 17 and Node.js. Featuring advanced PL/SQL automation, ACID-compliant transactions, and a premium Zinc-style Bento dashboard.

Deterministic financial mathematics for Go, on 128-bit decimals.

Enterprise-grade core banking platform built with Jakarta EE 10, EJB, and modern web technologies. Features secure authentication, customer/account management, transactional integrity, automated timer services, multi-layer security, analytics integration, and responsive UI. Supports real-time fund transfers, PDF reports, and admin panel. Try Now 👇

Core-banking backend: a double-entry ledger where correctness is a property of the database (PostgreSQL 18 + PL/pgSQL), fronted by a thin Go API, an HTMX operator console, and a Preact PWA. Not a real bank.

Temenos — independent third-party profile of a public API surface, by API Evangelist. APIs for Temenos banking and financial services platform, providing cloud-native, cloud-agnostic, API-first banking solutions including core banking, digital banking, payments, wealth management, financial crime mitigation, and more.

Supervisory financial-compliance digital twin: CDC, Flink CEP, Cedar/Zen, XBRL/SDMX, immudb audit.

Production-grade hybrid infrastructure, virtualization & cybersecurity lab: Proxmox VE 9.2, OPNsense L3 firewall, Wazuh SIEM/XDR, Active Directory forest, k3s, declarative NixOS/IaC & banking security testbed.

Thought Machine — independent third-party profile of a public API surface, by API Evangelist. Thought Machine is a London-headquartered cloud-native core banking technology company founded in 2014 by Paul Taylor, with offices in New York and Singapore. It builds Vault Core, a universal product engine in which every banking product — mortgages, loan

Top Cloud Financial Services Platform (Opensource) Star if you like it!

Production-grade banking core for agentic commerce — the embryo of a bank where AI agents are first-class account holders. Rust append-only double-entry ledger in micro-units (10⁻⁶) so $0.001 calls settle, hold→capture authorizations, and consent-backed payment mandates. Rust/Go/Flutter/Python monorepo. One-command sandbox. No BaaS lock-in.

A Core Banking application built with Java and Spring Boot, providing REST APIs for customer, account, and transaction management with database integration.