Optimum free year. T-mo network. Don't recommend even if it was still available.
Net10 on VZW network SIM. Have built enough points for several years of service (on 2GB plan) at current points redemption values. Hope VZW doesn't devalue.
Under the old habits die hard heading - PagePlus paygo plan. VZW network.
TextNow.
Pretty sure FreedomPop is still offering this free plan.
Had Beast free plan. At&t network. Liked it a lot, was sad to see it go.