React Virtuoso

Checked 2026-10-28 against official sources. Official README/docs verify npm react-virtuoso and the Virtuoso, GroupedVirtuoso, VirtuosoGrid and TableVirtuoso APIs. Core is MIT and free; the family also includes MIT masonry/data-table offerings and a separate commercial @virtuoso.dev/message-list package. Official pricing checked today displays Message List at $14/month/seat billed $168 annually and Pro at $26/month/seat billed $312 annually. Three-letter currency and tax treatment were not verified, so no invented USD structured paid plans; the pricing list records the confirmed free core only, not that the whole family is free. Paid seats follow the maximum concurrent contributing front-end developers, including contractors; production use continues after expiration, while continued active development requires renewal. Editorial: useful for long feeds/data-heavy products and streaming conversations, but virtualization adds measurement, scrolling and integration constraints. Marketing performance/adoption badges are not independently audited. The mobile nested-scroll flag is the actual bounded virtual-list/chat/table demonstrations, not missing landing-page content.