Fantrax

League host for fantasy football, baseball, basketball and hockey. Free leagues run up to 12 teams on standard scoring; the paid Commissioner tier allows up to 30 teams, deep scoring options, keepers and salary cap drafts. Includes live scoring, expert rankings and pick'em games.

• Free tier + paid

Free fantasy league host for football, baseball, basketball and hockey, running since 2005: live scoring, league chat, 137 scoring rules, taxi squads, up to 40 keepers, future pick and multi-team trades, email drafts, year-round access and one-click import of ESPN or Yahoo leagues.

• Free tier + paid
• ESPN
• Yahoo

Free fantasy college sports where managers draft whole schools instead of players and score when those schools win. Leagues get live snake or linear drafts, add/drops, trades and custom scoring, plus pick'em and survivor games. College football leads; other college sports are covered too.

• Free

Web fantasy league platform for NFL and seven other sports: single-sport leagues with custom rules or cumulative multi-sport dynasties, with keepers, mock drafts, waivers, live scoring, trade veto votes, and optional collected entry fees with automatic payouts.

• Free tier + paid

Long-running fantasy football league host built for deep commissioner customization: custom scoring, rosters and waiver rules, live and slow drafts and auctions, and league types from redraft to keeper, dynasty, best ball, DFS-style and chop leagues. Free NFL playoff leagues.

• Paid

Free league host for fantasy football, basketball, baseball and hockey: create or join public leagues, standard or custom rules, mock drafts, live scoring, league chat and ESPN rankings. Also runs Knockout leagues and free NFL pick'em, survivor and prediction games.

• Free