Open science is about sharing — papers, data, software, ideas… Sharing promotes replicability, transparency, knowledge accumulation, love…
But it is only meaningful when open standards are implemented. Examples:
General idea — Use tools that are as independent as possible:Mature tools are preferred to beta since the developer(s) might abandon the projectFree and open source (F/OSS) projects are preferred to proprietary because you can trust the code, change it to your needs and it will never vanish.Text files are more accessible than binary files since the latter may require proprietary software to use them.
Note: This is a general preference, not absolute. Your particular problem might have different requirements.