Old School NBA - free 24-team dynasty NBA league without salaries or contracts. Some old school names and logos like the Bullets and Supersonics. As of this post, eight teams have been taken, so grab an available team now before I start advertising this outside of ProFSL.
PFBL - free 28-team dynasty MLB league with contracts. League features flat salary cap, but as a GM, you keep all of your franchise's players except the ones with greater than three years of service time. This evens out the playing field and opens up free agency with plenty of talented veterans. As of this post, eight teams have been taken, so grab an available team now before I start advertising this outside of ProFSL.
Fantasy Baseball Fanatics - free 30-team dynasty MLB league with contracts. League features flat salary cap, but many other rules are similar to that of MLB. As of this post, 24 teams have been taken, so grab an available team now while there are still openings.
Major League Dynasty Baseball - money 30-team dynasty MLB league with contracts. League features variable salary cap (and variable entry fee, small, just to make sure GMs are dedicated) with many rules and a structure to make it realistic. League will have an entire minor league database for tracking organization's players. Minor league teams will be a part of the standings as well as revenue sharing. This is truly an advanced experience. As of this post, about nine teams have been taken, so grab an available team now while there are still openings.
The Bigs - free 12-16 team dynasty MLB league with eight teams already in the mix. League will have many rules that correlate to MLB such as salaries, contracts, waivers, entry draft, and arbitration.
All of these leagues are in good control with commissioners that are dedicated to their success.