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Apache OFBiz is an open source product for the automation of enterprise processes. It includes framework components and business applications for ERP, CRM, E-Business/E-Commerce, Supply Chain Management and Manufacturing Resource Planning. OFBiz provides a foundation and starting point for reliable, secure and scalable enterprise solutions.
A modern In-App Purchases management framework for iOS.
Self-hosted AI trading terminal for Hyperliquid: chart read in, validated Freqtrade/Nautilus-Trader strategy out, deployed live.
Scalable, event-driven, deep-learning-friendly backtesting library
Bitcart is a free and open-source self-hosted payment processor for BTC, LTC, BCH, XMR, ETH, TRX, USDT and more
Simple and elegant invoicing solution.
OpenBudgeteer is a budgeting app based on the Bucket Budgeting Principle
Technical Analysis Library for Golang
Golang client for PayPal REST API
Python live trade execution library with zipline interface.
Create your Java crypto trading bot in minutes. Our Spring boot starter takes care of exchange connections, accounts, orders, trades, and positions so you can focus on building your strategies.
TranslatedShanghai Future CTP Interface CTP Python API Wrapper
Double-entry accounting & ERP for the web
ACH implements a reader, writer, and validator for Automated Clearing House (ACH) files. The HTTP server is available in a Docker image and the Go package is available.
Trady is a handy library for computing technical indicators, and it targets to be an automated trading system that provides stock data feeding, indicator computing, strategy building and automatic trading. It is built based on .NET Standard 2.0.
Oracle3: open-source trading engine and MCP server for prediction markets. Finds fee-adjusted no-arbitrage violations across related event contracts and trades them live on Kalshi, Polymarket and Solana, or on paper, under pre-trade risk limits. 13 MCP tools, JSON CLI, agent skills, 600+ tests.
Matching Engine for Limit Order Book in Golang
SDK for growing mobile in-app purchases
📈 A menu bar app that updates cryptocurrencies prices in real-time
💸 Lightweight currency conversion library, successor of money.js
Invoicing for freelancers & small businesses
Flutter Plugin for Square In-App Payments SDK
Bloomberg-style trading terminal in Rust with GPU charts and congressional trades
Self-hosted, non-custodial stablecoin payment gateway with x402 and invoice checkout. Accepts USDC, USDT, PYUSD and DAI across 8 networks with QR payments, payment links, settlement tracking and signed webhooks. REST API, micropayments, exports, zero platform fees and no KYC. Python, cross-platform.