Lokus

Lokus is a next-generation note-taking application for developers, writers, and knowledge workers. The app offers database views without plugins, functional 3D/2D knowledge graphs, AI integration via an MCP server with over 68 tools, high-performance search, a local-first architecture, and compatibility with Obsidian. Additionally, it operates without reliance on third-party providers, requires no cloud services, and functions without subscriptions.

★★★★★

5.0(1 ratings)

• Database views. A Notion-like database system that allows creating dynamic databases from notes. Includes table views for organizing content, sorting information, and applying filters. Users can create multiple views of the same data and use smart filters with advanced query capabilities. Automatic synchronization keeps the workspace updated in real-time.
• 3D/2D knowledge graphs. A knowledge graph visualization system in 3D and 2D dimensions that represents connections between notes and concepts. The graphs process WikiLinks and establish semantic relationships between documents. The visualization allows spatial navigation through the knowledge base with hierarchical information representation.
• AI integration. Implementation of an MCP (Model Context Protocol) server providing access to over 68 artificial intelligence tools. The system enables natural language processing, content analysis, and assisted text generation. The integration architecture keeps processing local when possible and uses external APIs for specific functionalities.
• High-performance search. An optimized search engine that executes queries significantly faster than comparable alternatives. The search index is built locally and updated in real-time with changes in the workspace. Supports full-text search, metadata search, and queries by custom properties.
• Local-first architecture. A local storage approach where data resides primarily on the user's device. The application operates without requiring connections to cloud services. Users maintain complete control over their information with local backup options and manual synchronization between devices.
• Obsidian compatibility. Ability to work with existing Obsidian vaults without data conversion. The application automatically detects the file structure and settings. Reads and writes in Obsidian's native formats, maintaining the integrity of links and metadata.
• Custom properties. An extensible metadata system that allows adding specific properties to notes and documents. Supports data types such as tags, dates, numbers, URLs, and text fields. Custom properties enable advanced organization and granular filtering of content.
• Automatic synchronization. A real-time update mechanism that maintains consistency between views and components. Detects changes in the workspace and propagates modifications to all active views. Synchronization operates at both the database and user interface levels simultaneously.
• Authentication system. OAuth implementation with email confirmation URLs and improved token handling. Includes an integrated secure storage system and cross-platform compatibility. The OAuth server port is configurable via the OAUTH_PORT environment variable.
• Native theme manager. A theme system that synchronizes the native title bar with the application theme. On macOS, traffic light buttons reflect the dark or light theme. On Windows, the title bar background matches the application theme color. The system includes hexadecimal color validation and error handling.
• Tab navigation. Multi-tab interface with close management via keyboard shortcuts. Maintains workspace persistence between sessions and recovers previous state upon restart. Navigation includes action history and context restoration.
• Code block rendering. A code display component with syntax highlighting and preserved formatting. Supports multiple programming languages and maintains original indentation. Renders code blocks embedded in markdown documents.
• Cross-platform build system. Compilation process with Docker for cross-platform local development. Support for Windows builds using cargo-xwin. Optimized CI/CD workflows and npm dependency handling for Tauri CLI on Windows.
• Window management. Robust window control with graceful error handling and cleanup functions for event listeners. Prevents memory leaks through unique initialization and null checks. Management includes automatic crash recovery and state restoration.

The development of Lokus began in 2025 as a knowledge management application built with Rust and Tauri. The creators are developers who sought to combine the power of databases with the flexibility of note-taking apps. The application uses Rust for the backend and performance-critical components, while the interface is implemented with web technologies.

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