# On the web


If you want to use OpenFisca for running a simulation or evaluating the impact of a reform, without installing anything in your computer, these online services allow you to run OpenFisca directly on your browser, no installation required: [repl.it](https://repl.it), [python anywhere](https://www.pythonanywhere.com) and [jupyterlab](https://jupyterlab.readthedocs.io/en/stable/).

Let's see how to use OpenFisca on one of those services: [repl.it](https://repl.it) 🤓

## Instructions

1. Go to [repl.it](https://repl.it) and select `Python`.

2. Write the OpenFisca code you wish to run. The default entry point is `main.py` python file. Example of `main.py` content using `openfisca-country-template`:

    ```py
    from openfisca_country_template import CountryTaxBenefitSystem

    tax_benefit_system = CountryTaxBenefitSystem()
    parameters = tax_benefit_system.parameters

    print(parameters)
    ```

    > You can also import files (e.g. JSON files describing input [situations](../openfisca-web-api/input-output-data.md#describing-the-situation)) by clicking on the `import or drop` button.

3. Click the `run` button to execute your code.

    > Your code dependencies are automatically analyzed and imported.

4. You're all set. Check your code results on the right sided python interpreter.

## Example: evaluating a reform with OpenFisca France and repl.it

To see OpenFisca in action in your favourite browser, check out this [example of reform to the French tax-benefit system in repl.it](https://repl.it/@openfisca/framework-openfisca-france) (in French)!

# On the web


Some online services offer the opportunity to run Python code without having to install anything on your machine.

If you wish to run OpenFisca directly on your browser for a simulation or to evaluate the impact of a reform, then you might find one of the following services useful: [Gitpod](https://www.gitpod.io/), [repl.it](https://repl.it), [python anywhere](https://www.pythonanywhere.com) and [Jupyterlab](https://jupyterlab.readthedocs.io/en/stable/). 

Please beware that you might need to install the OpenFisca package you need on your online service before using it.

## Instructions

1. Start by installing the package you need on your online service e.g. `OpenFisca-Country-Template`.

2. Write the code you wish to run. Example of a code snippet to run:

    ```py
    from openfisca_country_template import CountryTaxBenefitSystem

    tax_benefit_system = CountryTaxBenefitSystem()
    parameters = tax_benefit_system.parameters

    print(parameters)
    ```

3. Run your code and check the results.



Make online usage instructions generic
Make online usage instructions generic
