NFL DFS Lineup Optimizers — DraftKings & FanDuel
The optimizer family: one exact solving engine, three doors. The main page runs both platforms side by side; the DraftKings and FanDuel presets load with their formats pre-set so you're one click from a lineup. Every version gets the same guarantees — provably optimal under your numbers, lock/exclude controls, editable player table with CSV paste, and four diverse alternatives ranked honestly.
The tools
One engine, three presets
DraftKings (1 QB, 2 RB, 3 WR, 1 TE, 1 FLEX, 1 DST at $50,000) and FanDuel (1 QB, 2 RB, 3 WR, 1 TE, 2 FLEX, no DST at $60,000) share one solving core: exact multiple-choice knapsack with full FLEX-position enumeration. The presets aren't different tools — they're the same math pointed at your platform so zero settings stand between you and the Optimize button.
What the optimizer never does
It never auto-updates salaries or projections (the default table is a clearly-labeled sample — paste your own CSV for live slates), never requires an account, and never sends your player list anywhere: the solver runs in the page. It also won't pretend projections are destiny — the Range of Outcomes tool next door shows exactly how wide a 115-point projection really is.