ChessMonitor

ChessMonitor is a free chess analytics platform that lets you track your progress and prepare against opponents by linking your Chess.com and Lichess accounts. Founded in 2020 by developer Thomas Dondorf as a personal project, it grew into a funded startup after receiving Germany's EXIST Business Start-up Grant in 2024. In October 2025, Super GM Anish Giri joined as co-owner, bringing elite-level chess insight to the product roadmap.

The platform's core strength is cross-platform analytics. You can view games from both Chess.com and Lichess in one place, explore openings across billions of games, and get detailed win/draw/loss statistics by opening. The Masters Database includes over 10 million over-the-board and tournament games. One standout feature is the FIDE rating estimate, which gives online-only players a sense of their real-world strength.

ChessMonitor also includes opponent preparation tools with statistical breakdowns, a global map showing where your opponents come from, and a player search that works across platforms. The Basic tier is completely free and covers most analytical needs. Plus and Professional tiers add features like multiple account connections, custom PGN databases, Masters Database access, and advanced filters.

Built by a small team in Germany, ChessMonitor is ideal for serious players who want data-driven improvement without paying a subscription. With Anish Giri now shaping the product vision, it is positioned to become one of the most trusted analytics tools in the chess ecosystem.