Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation
Production-grade Rust-native trading engine with deterministic event-driven architecture
TranslatedA-share data for AI agents: K-lines, ticks, reports, fund flow, news, financials, filings, options, macro, futures, events, convertibles | 15 layers·87 endpoints·34 sources. Full-stack A-share data toolkit: market quotes and K-lines · same-day tick-by-tick trades · research reports · signals · capital flow · news · financials · announcements · limit-up board trading (打板) · ETF options · public sentiment · macro and interest rates · futures and block trades (including Dalian Commodity Exchange daily K-lines) · event-driven · convertible bonds | No API key needed except for iwencai
Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics
Usage-based pricing and billing for developers 🔓 Cloud or self-hosted ⚙️ No-code UI 💰 Realtime usage metering 🎟 Credits & top-ups 🔑 Control feature access
In-app purchases and subscriptions made easy. Support for iOS, watchOS, tvOS, macOS, and visionOS.
Metering and Billing for AI, API and DevOps. Collect and aggregate millions of usage events in real-time and enable usage-based billing.
- kafka
- metering
- usage-based-billing
- golang
Open-source Rust framework for building event-driven live-trading & backtesting systems
Polymarket Data Retriever that fetches, processes, and structures Polymarket data including markets, order events and trades.
The AI-Engineering Foundation Framework for business apps: open-source TypeScript, with multi-tenancy, RBAC, events and domain modules already decided as conventions and specs, so Cursor, Claude Code and Codex build features instead of re-deciding architecture. Start with 80% done.
Build a REAL Software-as-a-Service app with AI features and payments & credits system that you might even turn into a side income or business idea using Next.js 14, Clerk, MongoDB, Cloudinary AI, and Stripe.
- clerk
- cloudinary
- next14
- nextjs
Open-source Pricing and Billing Infrastructure 🚀 Subscription management, Invoicing, Pricing, Usage-based billing, Cost limiting, Grandfathering, Experiments, Revenue analytics & Actionable insights
Scalable, event-driven, deep-learning-friendly backtesting library
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.
An event based Micro ERP
Predicts how news-driven supply-chain shocks ripple across S&P 500 stocks, with an event-study backtest and a hash-chained public prediction ledger. Built on MIT open-source SEC supply-graph code.
Open-source event management, ticketing and membership platform for communities, clubs, independent venues and independent artists.
- django
- django-ninja
- eu-vat
- event-management
💳 Capacitor plugin for Stripe Terminal (credit card readers)
An event-driven library to manage and simulate Web Monetization.
Wisp CLI — Interactive trading platform for backtesting and live trading across spot, perpetual futures, options, and prediction markets
A JS library for Web Monetization revenue splitting. #gftwhackathon Winner.
- web-monetization
- monetization
- revenue-sharing
- grant-for-the-web