CapFrameX vs Overwolf

CapFrameX is an open-source benchmarking tool that captures and analyzes frame performance data using Intel's PresentMon as its underlying capture engine. It calculates detailed metrics like frametimes, FPS values, median frame rate, and low percentile figures, then displays an in-game overlay during test runs through integration with RivaTuner Statistics Server. Built for enthusiasts and reviewers who want more rigorous benchmarking than a simple FPS counter, CapFrameX turns raw capture data into readable reports and includes educational content explaining what frametime and percentile metrics actually mean. It is free to use, with the project accepting optional donations, and its source is publicly available on GitHub.

Overwolf is a free platform that lets PC gamers run in-game overlay apps, such as stat trackers, build guides, and utility tools, on top of major titles like Valorant, League of Legends, CS2, and World of Warcraft without alt-tabbing. It also serves as a development platform, giving creators the SDKs and appstore distribution to build and monetize their own overlay apps.

• Free and fully open source
• Goes far deeper than a basic FPS counter with proper frametime and percentile analysis
• Built on the well-regarded PresentMon capture engine
• Includes educational resources for understanding the metrics it reports

• Free to install and use for gamers
• Wide app library covering most major competitive titles
• Low-friction overlay lets you check stats or guides mid-game
• Active developer ecosystem with real monetization options for creators

• Requires RivaTuner Statistics Server for the in-game overlay to display
• Steeper learning curve than simple FPS overlay tools
• Aimed more at enthusiasts and reviewers than casual players

• Windows-only, no Mac or Linux support
• Individual overlay apps can carry ads unless a premium version is purchased
• Running many overlay apps simultaneously can add system resource overhead