Citizens (you can't turn off the health for citizens, under the name, because it's displayed on all the human entities)
Permission Health
Sentry for Citizens (v1.3.7+)
Heroes (use latest version)
Not compatible with:
NametagEdit - may crash players, alternative plugin: Colored Tags
Other plugin that uses the scoreboard (but if the use the main scoreboard, you can try to turn off permission and world disabling to make them compatible)
TagAPI (It could make players show 0 HP and hide team names; works with mob health bars)