Repository Index

Double-entry accounting & ERP for the web

• postgresql
• accounting
• billing
• web-app

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.

• algorithmic-trading
• kalshi
• polymarket
• python

Countries - ISO-639, ISO-3166 countries codes with subdivisions and names, ISO-4217 currency designators, ITU-T E.164 IDD phone codes, countries capitals, UN M.49 codes, IANA ccTLD countries domains, FIPS, IOC/NOC and FIFA codes, VERY VERY FAST, compatible with Databases/JSON/BSON/GOB/XML/CSV, Emoji countries flags and currencies, Unicode CLDR.

• go
• iso
• iso3166
• iso3166-1

Hyperliquid trading desk for AI agents: 7 roles, 17 skills and keyless market tools. Research first; execution requires your API wallet and approved tickets. Grok Bot, Claude Code, Cursor, Codex, Gemini CLI and Grok Build.

• agent-skills
• defi
• grok-bot
• hyperliquid

Free invoice builder & GST billing software for India. Make GST invoices, quotations, bills of supply and credit notes as PDF; GSTR-1/3B reports. Free invoice maker for shops, freelancers & small businesses. Free Tally alternative: open source, 100% offline, no signup, no limits.

• gst
• billing-software-open-source
• gst-billing
• hsn-code

A composable, real time, market data and trade execution toolkit. Built with Elixir, runs on the Erlang virtual machine

• trading
• trading-bot
• trading-systems
• cryptocurrency

Open source Farm management Information System (FMIS) - Connecting farms to the world

• ruby
• agriculture
• erp
• management

SDK for growing mobile in-app purchases

• ios
• purchases
• iap
• sdk

Family Accounting Tool

• accounting
• personal
• tool
• family

Every day, millions of traders around the world are trying to make money by trading stocks. These days, physical traders are also being replaced by automated trading robots. Algorithmic trading market has experienced significant growth rate and large number of firms are using it. I have tried to build a Deep Q-learning reinforcement agent model to do automated stock trading.

Self-hosted restaurant POS with tables, kitchen display, reservations, QR ordering, loyalty and local-network operation.

• casaos
• docker
• gst
• india

Telegram trading bot for tokens: signals, limits and stop-loss in one chat.

• bot
• crypto
• telegram
• python

TranslatedProject introduction: AI enterprise services, including Agent, marketing, content creation, CRM, OA, BI, RPA, email, OKR, etc., supporting finance and taxation, supply and sales networks, legal services, think tanks, logistics, flexible employment, cross-border expansion overseas, etc. Supports SNS business connection mining and big data mining.

Lightweight Bitcoin payment processor written in easily deployable Python. Self custody donations and payments on-chain & Lightning network, directly connected to your own Bitcoin node! No middleman/custodian.

• bitcoin
• bitcoin-payments
• donation-button
• woocommerce

Self-hosted, invisible CAPTCHA that detects AI agents driving real browsers. GDPR, WCAG 2.2 AA, and EAA: no cookies, no third-party data sharing, and no visual or audio puzzle. With a false-positive budget enforced in CI. Proof of work, drop-in for Turnstile and reCAPTCHA.

• anti-bot
• behavioral-analysis
• bot-detection
• captcha

Batch backtest, import and strategy params optimalization for Gekko Trading Bot. With one command you will run any number of backtests.

• gekko
• backtesting-trading-strategies
• gekko-backtesttool
• backtest

Personal Expense Manager -- UWP (+ Blazor) and CQRS+ES.

• uwp
• uwp-apps
• uwp-applications
• money-manager

Deterministic, dependency-free Chan-theory (缠论) structure engine + multi-market trading workstation (A-shares / HK / US / crypto) with teaching chart annotations and a mobile PWA.

Go library containing a collection of financial functions for time value of money (annuities), cash flow, interest rate conversions, bonds and depreciation calculations.

• golang
• fintech

Passive market-making bot for Predict.fun: quotes from live order books, replaces stale orders and cancels on unsafe price/depth; Windows desktop app and web console for Ubuntu servers.

• desktop-app
• market-making
• predict-fun
• prediction-markets

Do stock correlations predict the market? 66 pre-registered tests, the data, and a triple pendulum that explains why not. If you have an idea you want me to try, submit it as a PR and I will test it and get back to you.

SaaS boilerplate/starter-kit in Go+React with Stripe integration, multi-tenant support, comprehensive features and AI-agent ready

• ai-agents
• go
• golang
• mcp-server

Gekko Trading Bot dataset dumps. Ready to use and download history files in SQLite format.

• gekko
• gekko-datasets
• datasets
• trading-datasets

💸 Crypto Payments straight to your wallet. DePay simplifies Web3 integration for developers, harnessing DeFi to accept any token effortlessly. Integrate frictionless, real-time token conversion with sleek, customizable widgets designed for seamless user experience.

• blockchain
• payment
• widgets
• react