Four simple recommendations to encourage best practices in open research software is a publication that addresses this issue by providing a simple, yet robust framework of recommendations that encourage the adoption of existing best practices in research software development. These recommendations are designed around Open Science values, and provide practical suggestions that contribute to making research software and its source code more discoverable, reusable and transparent.

These recommendations recognise that not everyone can or want to make their software open from day one, but we encourage you to learn from the recommendations and adapt them to your needs. For example, you can have a private repository, you can and should still have a license, make contributions clear, and have a registry of your software.
Participants must bring a laptop with a Mac, Linux, or Windows operating system (not a tablet, Chromebook, etc.) that they have administrative privileges on. They should have a few specific software packages installed (listed below)

Recommendations to make your research software open

Reference