DemoLens vs ReplayDojo

DemoLens is a free browser viewer for Counter-Strike 2 match demos, presenting a 2D tactical replay rather than a 3D first-person view. It accepts .dem, .dem.gz, and .dem.zst files and parses them in the browser with WebAssembly, so demo files are not uploaded to DemoLens. Replay controls include a multi-level radar, grenade trajectories, player status, key presses, playback speed, and kill markers. Analysis tools provide grenade lineup pins, movement trails, heatmap-style pins, FOV cones, drawing mode, and kill-feed badges. Scoreboard and economy data, player metrics, percentile comparisons, and an integrity check against professional baselines are included. FACEIT demos add synchronised voice playback, per-player voice timelines with WAV export, and chat translation. The browser extension adds one-click demo opening and player scouting statistics in FACEIT rooms. Desktop Chrome, Edge, or Firefox is required; phones are unsupported. The project says it has no accounts, tracking, analytics cookies, ads, or personal-data collection.

ReplayDojo is a free, web-based replay analyzer and coach for StarCraft II, Age of Empires II, and Dota 2. Players upload or import matches to view them on a game map and get automated analysis based on replay data. For Age of Empires II, it accepts .aoe2record files, reconstructs recorded games, and covers build orders, age-up timings, army composition, and economy. The viewer supports drag-to-pan and scroll-to-zoom. Dota 2 users can upload .dem or .dem.bz2 files, enter a match ID, or provide a Dotabuff, OpenDota, or STRATZ link to import a replay from Valve. Its 3D viewer presents hero movement, last hits, vision, runes, Roshan, and teamfights on the game map. Uploaded replays are processed on ReplayDojo’s servers, and parsed data may be kept so a replay remains available by link. Links are unguessable but not access-controlled; deletion can be requested. The service is fan-made, and its terms warn that analysis may be incomplete or inaccurate.