ArenaSwap

Watches every live game across 12 leagues and auto-switches your browser tab to the most exciting one every 15 seconds.

Never miss the moment. ArenaSwap is a free, open-source browser extension that watches every live game across 12 sports leagues and automatically switches your browser tab to the most exciting one — every 15 seconds. Think NFL RedZone, but for every sport, every night, on whatever streaming service you already pay for. ━━━━━━━━━━━━━━━━━━━━━━ HOW IT WORKS ━━━━━━━━━━━━━━━━━━━━━━ 1. Open your streams. Pull up your games in separate browser tabs — ESPN+, Peacock, Paramount+, YouTube TV, Hulu, or any other browser-based stream. 2. Assign each tab once. Open the ArenaSwap popup, find each live game in the list, and connect it to its tab with a single dropdown. 3. Walk away. Every 15 seconds, ArenaSwap scores every live game and switches you to the best one. The right tab is unmuted, the others are silenced — so you always hear the right broadcast. ━━━━━━━━━━━━━━━━━━━━━━ THE POWERSCORE ALGORITHM ━━━━━━━━━━━━━━━━━━━━━━ Every live game gets a 0–100 PowerScore built from five signals: - Closeness (30 pts) — how tight the score is - Late-Game Pressure (30 pts) — how much time is left and how it raises the stakes - Momentum (20 pts) — recent scoring runs and shifts - Lead Changes (12 pts) — back-and-forth chaos - Comeback Factor (8 pts) — teams climbing out of a hole Games with frozen clocks (halftimes, timeouts, stoppages) get a penalty so you're never switched into a commercial break. You can see the live score breakdown for any game with one click — no black-box magic. ━━━━━━━━━━━━━━━━━━━━━━ SUPPORTED LEAGUES ━━━━━━━━━━━━━━━━━━━━━━ NFL · NBA · MLB · NHL · MLS · FIFAWC · EPL · WNBA · NCAAF · NCAAB · NCAAW · NCAAMH Five sports. Twelve leagues. Toggle any of them on or off. ━━━━━━━━━━━━━━━━━━━━━━ TUNED IN TO YOU ━━━━━━━━━━━━━━━━━━━━━━ - Sensitivity (1–7) — how big the score gap has to be before ArenaSwap switches. - Switch Cooldown — minimum time between switches, so you're never tab-flipped mid-possession. - Switch Delay — buffer for when your stream lags behind live data.\ - Favorite Team Bonus — extra weight for games involving teams you care about. Per-league favorites supported. - League filters — only monitor the sports you actually watch. ━━━━━━━━━━━━━━━━━━━━━━ PRIVATE BY DEFAULT ━━━━━━━━━━━━━━━━━━━━━━ - No account. No login. No subscription. - No tracking, no analytics, no ads. - Live scores come directly from ESPN's public API. Everything else runs locally in your browser. - 100% open source — full code, including the PowerScore package, is on GitHub. Open. Assign. Done.