Greasy is an HTC approach to HPC environments (HT&PC). Versatile and easy-to-use parallel framework/runtime aimed at many task computing, ideally in HPC environments. Greasy is a tool designed to make easier the deployment of embarrassingly parallel simulations in any environment. It is able to run in parallel a list of different tasks, schedule them and run them using the available resources. It is the perfect tool to use, for example, when your application is a serial program, and you need to run a large number of instances with different parameters. Greasy packs all these separate runs and uses the resources granted to run as many tasks as possible in parallel. As this tasks finish, Greasy will continue starting the tasks that were waiting for resources. Since one of the main principles of Greasy is to keep it simple for the user, the list of tasks is just that: a list of tasks in a text file. Then, each line in the file becomes a task to be run by Greasy. It is able to manage dependencies between tasks, or to rerun a task in case of failure if desired. Greasy can be easily configured by default with a configuration file, and can be also customized for each particular execution using environment variables. It also provides a log system where all greasy actions will be recorded to keep track of what is the progress of your run.