Blnk is an open-source ledger & financial core for shipping fintech products fast.

Double-entry bookkeeping library

Modern plain text accounting. Beancount compatible.

Ledger implementation in golang

An Elixir double-entry library inspired by Ruby's DoubleEntry. Brought to you by CoinJar.

A wallet service built with go-kit

Open Source Double Entry Accounting + Crypto/Web3

Double-entry accounting written in Elixir. Heavily inspired by ledger-cli

[Under Construction] MacOS Amatino client application

Double-entry accounting system for browsers + indexeddb (a fork of medici)

Highly performant, type-safe command-line accounting ledger built with Kotlin & GraalVM, featuring hierarchical account management, automated balance sheet generation, and GitHub Gist synchronization.

[Under Construction] Swift binding library for the Amatino API

C++ program to determine if a specified transaction is debit or credit

Financial ledger system implementing double-entry accounting with ACID guarantees, idempotent payments, and crash-safe async webhooks using PostgreSQL + FastAPI

BalanceCat: Your Personal Double Entry Bookkeeping Simplified (Currently no service)

An enterprise-grade AI-powered sales forecasting & inventory management system built with Laravel, React and Python. Features double-entry ledger tracking and AI-powered sales forecasting.

A simple double entry accounting app which has a fastapi backend with sveltekit frontend

Production-grade core banking loan management and double-entry accounting service for a fintech lending platform.

Double-entry ledger API - Spring Boot service with idempotent journal writes and integrity checks.

NomLedger is a storage-agnostic Go validation engine that enforces zero-sum accounting, period closure, currency consistency, and exchange-rate tolerance on in-memory financial transactions before persistence.