Heimer is a cross-platform desktop mind map editor built with Qt (C++17). It provides a graphical interface for creating, editing, and organizing mind maps with features like adjustable grid, automatic layout optimization, undo/redo, copy/paste, image embedding, and export to PNG/SVG. The architecture follows a layered design: domain layer (Graph, MindMapData, LayoutOptimizer), application layer (services, state machine, settings proxy), view layer (Qt widgets, QGraphicsScene/View, dialogs), and infrastructure layer (file I/O, XML serialization). Key entry points include main.cpp, Application class, MainWindow, EditorView, and EditorService. Data flows from user interactions through EditorView to EditorService, which manipulates the MindMapData (graph) and triggers serialization via AlzFileIO. External dependencies are limited to Qt (5 or 6) and two bundled small libraries (SimpleLogger for logging, Argengine for CLI argument parsing). The layout optimizer uses simulated annealing to arrange nodes, and undo/redo is implemented via snapshot-based state capture. The codebase demonstrates solid engineering practices with unit tests, CI/CD pipelines, and multi-language support.
lsq is a CLI tool written in Go that serves as a lightning-fast companion for Logseq, the open-source knowledge base. Its core functionality is creating, appending to, and viewing daily journal entries directly from the terminal, following Logseq's file naming and formatting conventions (Markdown or Org-mode). The tool provides a rich set of flags for targeting specific dates, searching pages via a trie-based index (including alias support), regex searching across journals and pages, and piping content from STDIN. It also supports indentation for nested list items and a configuration file in EDN format for persistent settings. The architecture is a single-binary monolith with clear separation into config, system (file I/O, editor launch), trie, todo state cycling, and an EDN validator module. While the tool is tightly coupled to Logseq's directory structure (journals/ and pages/ folders), the underlying components like the trie search, file appending logic, and configuration loading are well-isolated and could be reused in other Go projects with minimal adaptation.
This repository implements a personal knowledge management system centered around LLM-powered content processing. It follows a four-layer architecture: raw/ for immutable source materials, wiki/ for LLM-generated structured knowledge (summaries, concepts, indexes), brainstorming/ for intermediate outputs like chat logs and health reports, and artifacts/ for user-created work. The system processes various input formats (articles, books, PDFs, Facebook exports) through user-triggered commands like /compile and /convert-to-md, which leverage external tools (pandoc, pymupdf) and LLMs to extract insights and build interconnected knowledge networks. The core innovation lies in separating raw consumption from synthesized understanding, allowing users to accumulate source material without immediate processing, then periodically run LLM-driven synthesis to surface patterns across documents. Key workflows include extracting concepts that appear in multiple sources, maintaining bidirectional links between related ideas, and preserving tension between personal experience and external research in concept notes. The system emphasizes provenance tracking, with every synthesized piece linking back to its source via wikilinks. While the system relies on external LLMs and tools for its core functionality, it provides well-defined, reusable components for common data preparation tasks. The Facebook JSON-to-Markdown converter stands out as a robust, standalone script handling encoding normalization, media extraction, and frontmatter generation. The overall design demonstrates thoughtful consideration of knowledge work friction points, though reproducibility is hampered by undocumented environment dependencies and lack of sample data.
This repository is the Notes app for ownCloud Server, a distraction-free note-taking plugin that stores notes as plain text files in the user's cloud storage. It provides a web-based editor with markdown support (via mdEdit) and syntax highlighting (via Prism), along with a RESTful API (v0.2) for third-party integration. The backend is PHP 8.3 following ownCloud's app framework: controllers handle HTTP requests, services contain business logic, and a simple entity layer maps files to Note objects. The frontend is an AngularJS 1.8 single-page application using Restangular for API communication, with custom directives for autofocus, debounced saving, and editor integration. Notes are persisted as .txt, .md, .org, or .note files in a per-user 'Notes' folder, with filename collision resolution and directory traversal prevention. The app supports favoriting via ownCloud's tag system and remembers the last viewed note across sessions. The codebase is well-structured with unit tests for both PHP and JavaScript, acceptance tests, and CI/CD pipelines. It has been actively maintained with recent security updates (patched AngularJS, underscore, Prism) and a move to in-repo translations. While the architecture is standard for ownCloud plugins and the frontend uses an older AngularJS version, the implementation is clean, the business logic is robust, and there are a few reusable patterns like the async save queue and a Python duplicate-key checker for translation files.
TiddlyWiki5 is a mature, extensible personal wiki application that runs entirely as a single HTML file in the browser or as a Node.js server. It manages content as individual 'tiddlers' — small, addressable pieces of text with metadata — and provides a powerful custom filter language for querying, transforming, and aggregating them. The application features a widget-based UI rendering engine, a pluggable wiki-text parser with dozens of rules, a built-in HTTP server with REST-like endpoints, encryption, and extensive integration plugins (geospatial maps via Leaflet/Turf, math typesetting via KaTeX, Markdown parsing, CodeMirror editing, QR codes, etc.). The architecture is highly modular: core functionality is implemented via module types (widgets, filter operators, parser rules, startup hooks, saver backends) that can be extended or overridden by plugins. The codebase has been continuously developed since 2011 and supports both client-side single-page application mode and server-side wiki mode. Despite its impressive extensibility and long history, the codebase shows signs of technical drift. The boot kernel (boot/boot.js) is a large monolithic file that mixes utility functions, the wiki store, module loading, and platform-specific startup logic. Many third-party libraries (e.g., JSZip v2.6.1, Leaflet.markercluster 1.5.3, minified CodeMirror modes) are vendored and outdated, requiring manual patching. The code style is inconsistent, with some modules using modern ES6+ features while others remain in ES5. The filter language and widget infrastructure are well-architected and reusable, but the tight coupling between core modules makes extraction for external use non-trivial. The project remains actively maintained with frequent commits, a large community, and an extensive test suite, making it a solid foundation for knowledge management applications, though significant refactoring would be needed to bring it to contemporary best practices.
Memospot is a desktop application that bundles the Memos note-taking service as a self-contained Tauri v2 wrapper. It manages the Memos server as a sidecar process, provides a SvelteKit frontend for settings and interaction, and handles configuration persistence, database migrations, window state, keyboard shortcuts, and auto-updates. The architecture is a Rust backend with a web frontend, using a Rust workspace with multiple crates for config, dialogs, sidecar management, port picking, and homedir resolution. The frontend is built with SvelteKit, Tailwind CSS, and uses Paraglide for i18n. The build system includes GitHub Actions CI/CD, Docker-based builds, and installers for Windows (NSIS/WiX), Linux (deb, AppImage, Flatpak), and macOS. The codebase demonstrates solid engineering practices with clean abstractions and reusable utility crates, though it has some pinned dependencies and complex CI workflows.
Simplenote for Android is a full-featured note-taking application with real-time synchronization via the Simperium protocol. It supports markdown editing, checklists, tags, collaboration via email, public note publishing, and WordPress.com posting. The app includes a passcode lock for privacy, home screen widgets, and multiple visual themes. Authentication flows cover email/password, magic link, and WordPress.com OAuth. The architecture follows MVVM with use cases, repositories, and Dagger Hilt dependency injection, mixing Java and Kotlin. The codebase is organized into three Gradle modules: the main Simplenote app, a Wear companion app, and a reusable PasscodeLock library. CI/CD is managed via Buildkite and Fastlane, with localization through GlotPress supporting 17 languages.
This is a full-featured task, project, and habit management plugin for the SiYuan note-taking application. It implements the 'Bulletproof Note Method' philosophy, integrating tasks, reminders, projects (with kanban and Eisenhower matrix views), habits with check-ins and streaks, a pomodoro timer with detailed statistics, and calendar views (day, week, month, agenda). The plugin goes beyond basic task management with support for natural language date parsing (including lunar calendar), recurring tasks with complex patterns (daily, weekly, monthly, yearly, Ebbinghaus), ICS export/import and CalDAV subscription synchronization, WebDAV/S3 cloud backup, and MCP (Model Context Protocol) integration for AI-assisted task creation. It is monetized via a VIP subscription model with elliptic-curve signed licenses. Architecturally, it is a SiYuan plugin (extends the base Plugin class) with a mix of Svelte components (settings panels) and imperative DOM-based dialogs and panels. The codebase is organized into data managers (singletons for projects, habits, categories, pomodoro records, etc.), utility functions, and UI components (dialogs, panels, renderers). The main entry point is `src/index.ts`, which registers all dock panels, tabs, menus, and event listeners. There is a separate kernel entry `src/kernel.ts` for MCP tool registration, allowing the plugin to be controlled via AI or external scripts. Notable integrations include: ICS subscription (auto-sync external calendars), CalDAV bi-directional sync with allowed providers, Webhook notifications, and S3/WebDAV cloud upload of exported ICS files. The plugin handles mobile notifications, multiple backends (desktop, mobile, browser), and includes data migration helpers for upgrades across its long development history.
Retroma is a CSS theme for the Obsidian note-taking application, designed to evoke a retro aesthetic inspired by arcade machines, vintage software, and early web design. The theme uses an algorithmic color system based on the modern CSS `oklch()` color space to dynamically generate palettes from a single accent color, ensuring perceptual uniformity across light and dark modes. It offers extensive customization through the Style Manager plugin, including per-note font and accent overrides, a collection of 79 styled callouts, and multiple preset configurations. The repository contains the theme manifest, preset JSON files, and example callout documentation, but the core `theme.css` file was not provided for analysis, limiting the ability to assess code quality and reusability. Based on the README and manifest, the theme appears well-designed and actively maintained, with a focus on accessibility and visual personality.
This repository is a starter template for creating documentation websites using the Hugo Blox framework. It provides a pre-configured Hugo site with example content, navigation, and configuration files for a documentation theme. The actual functionality (rendering, shortcodes, search) is delegated to imported Hugo modules from the HugoBlox/kit ecosystem. The repo contains no application logic or data pipelines; it is purely a content and configuration scaffold intended to be cloned and customized. The architecture is a static site generator with Tailwind CSS, Pagefind search, and GitHub Actions CI/CD. Key entry points are the hugo.yaml, params.yaml, and menus.yaml configuration files, and the content/Markdown files. External dependencies include Hugo, the HugoBlox modules, Node.js (for Tailwind and Pagefind), and a hosting provider.