$ show actualbudget/actual
Actual Budget is a mature, open-source personal finance application that operates on a local-first architecture with optional multi-device sync. In production, it provides envelope and tracking budgeting, transaction management, bank account synchronization via GoCardless/SimpleFIN/Pluggy, scheduled transactions, an advanced rules engine for auto-categorization, custom reports and dashboards (including Monte Carlo forecasting), and multi-user sync server capabilities. The system is built as a monorepo with distinct packages: `loot-core` (business logic, SQLite database, CRDT sync, custom AQL query language), `desktop-client` (React SPA with Redux and TanStack Query), `desktop-electron` (Electron wrapper), `mobile-client` (Capacitor-based), `sync-server` (Express with authentication and bank integrations), `cli` (headless management), `api` (public npm package), `component-library` (design system), and `crdt` (conflict-free replicated data type). Data flows from user input or bank imports into a local SQLite store, with optional sync to other devices via a CRDT protocol over a WebSocket/HTTP server. The project demonstrates high engineering craftsmanship with extensive tests, custom but well-documented systems, and a strong modular architecture. It is not a data research project.
The LLM identified 6 files worth highlighting for reuse:
A self-contained Merkle trie implementation used for conflict-free replicated data type (CRDT) sync. Supports insert, diff, and prune operations with efficient tree traversal. Encapsulates all trie logic in a single class, making it extractable for any project needing a Merkle-based sync protocol. Highly reusable and demonstrates deep understanding of distributed data structures.
A polymorphic Button component supporting variants (primary, secondary, bare), link/pseudo links, loading states, keyboard event passthrough, and Omit-style prop forwarding. Leverages the component library's theme tokens and View primitive. Clean, well-tested, and suitable as a standalone UI atom in any React project.
A composable Modal component with positioning strategies (center, full-screen), focus trapping, escape key handling, and backdrop click. Uses React Portal and the theme system. The pattern of Modal + ModalHeader + ModalCloseButton is consistent across the app and could be extracted as a generic dialog primitive for any React design system.
A fully-featured date range picker with month/day granularity, preset ranges, and first-day-of-week support. Composed of smaller reusable sub-components (MonthGrid, NavRow, YearSelect, RangeSelector). Self-contained within the component library, with internal utilities for date arithmetic. Demonstrates careful UX design and could be reused in any scheduling or reporting UI.
A simple yet effective React wrapper that obscures its children on hover using a CSS blur filter and a timeout. Provides a privacy mode toggle via context. The component is small, has no external dependencies beyond React, and solves a common UX requirement for financial applications. Easily extractable and adaptable for any sensitive data display.
A pure utility that extracts markdown links, plain URLs, file paths, and hashtags from user-written notes. Returns structured tokens (link, text, tag, file) with start/end positions. No framework dependencies. Could be reused in any application needing to detect clickable entities in free text, such as chat apps or documentation editors.