Post anchors
If you have wooden fence posts that are leaning over due to frost heave, erosion or soft soil conditions, then fence post anchors might be the solution you need to get them straightened up again.
These simple to use post anchors push into the ground relatively easily (if you can use a shovel, you can install these anchors!) and then they bolt or screw to the side face of your wood fence post, holding them in place.
Because these post anchors are made of coated steel, they're fairly strong and corrosion resistant, and they're a quick and affordable solution to wood fence posts that are leaning but still in relatively good condition.