| zfit | zfit: Fit Models in a Pipe |
| zglm | Run a glm model in a pipe (see 'zlm') |
| zlm | Run an lm model in a pipe |
| zlogit | Run a logit model in a pipe (see 'zlm') |
| zprint | Print the result of a function in a pipe but return original object |
| zprobit | Run a probit model in a pipe (see 'zlm') |