Top CCO GitHub Repositories & Tools (2026)

Claude Code multi-account manager, usage monitor (CLI, TUI & MCP cross-account delegation)

Firefly III: a personal finances manager

Weekly usage at a glance. Switch accounts in a click.

Open-source Tax Guides for AI agents, reviewed by named CPAs/CAs/EAs. 1,000+ Guides across 190+ jurisdictions. MCP server included. Works with Claude, ChatGPT, Cursor.

Codex Switch & Codex GUI & CSwitch & Codex Mobile & Codex Remote & Codex Web

C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.

Morocco's 1,503 communes as open data: HCP codes, the 2024 and 2014 censuses, boundaries, an HTTP API and an MCP server.

Framework for Evolutionary Message-Driven Microservices on the JVM

A simple app for tracking monthly spending and working towards financial goals.

Modern plain text accounting. Beancount compatible.

The Common Core Ontology Repository holds the current released version of the Common Core Ontology suite.

Ubilling is an open-source billing system designed for Internet service providers (ISPs). It provides tools for managing subscribers, handling payments and creating detailed reports. Ubilling allows control and monitoring of a wide range of network equipment and can be easily extended with custom functionality.

Fast, reliable bookkeeping engine with native GIT SCM support for plain text accounting

Fava - web interface for Beancount

The repo for hledger.org, the hledger project's website.

A Discord bot and CLI tool for automating Reverse Split Arbitrage stock trading!

Fishstrap Roblox FPS unlocker — fishstrap roblox, bloxstrap alternative, voidstrap, fast flags, fflags, bloxstrap fast flags, multi instance, roblox shaders, custom fonts, fishstrap github, roblox bootstrapper, Windows. Download:🡇

An accordion for the foldable iPhone Duo. The hinge is the bellows: fold and unfold to play. SwiftUI, onHingeChange, synthesized reeds.

Google Antigravity OAuth plugin for OpenCode (Revived & Extended) - Unlocks Gemini 3.8 Flash, 3.7 Flash, 3.1 Pro & Claude 4.6

Simple and easy to use Minecraft microsoft authentication library (Java and Bedrock)