Obsidian Chess Studio (OCS) is a modern chess analysis application designed for players who want to study games, explore positions, and build structured training workflows on their own machines.
It combines a Rust and Tauri backend with a React and TypeScript frontend, supports local databases for storing large collections of games, and provides tools for importing games from online services and PGN files. The software is aimed at serious analysis and long-term study, with integrated search, repertoire work, puzzle training, and detailed game review in a polished desktop interface for Linux, macOS, and Windows.
This is free and open source software.
Key Features
- Supports multiple UCI-compatible chess engines for simultaneous analysis.
- Includes exact and partial position search across game databases.
- Provides opening repertoire tools with tree visualization and coverage statistics.
- Offers player statistics from Lichess and Chess.com, including rating and opening performance data.
- Includes pawn structure analysis with identification, visualization, and filtering.
- Supports adaptive puzzles and interactive training features.
- Offers customizable keyboard shortcuts, multiple visual themes, piece sets, and sound sets.
- Supports PGN import and export, game previews, annotations, and detailed analysis reports.
- Cross-platform support – runs under Linux, macOS, and Windows.
Website: github.com/luisrivasnoriega/Obsidian-Chess-Studio
Support:
Developer: luisrivasnoriega
License: GNU General Public License v3.0
Obsidian Chess Studio is written in TypeScript and Rust. Learn TypeScript with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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I like this software. I especially like that it goes beyond basic engine analysis and brings together databases, repertoire work, position search, puzzles, and player statistics in one polished desktop app. The pawn-structure analysis and simultaneous UCI engine support is particularly useful for serious study.
Of course, I’m still a fish.