Hello:
I would like to know if it's possible to connect CommCare to Zapier, when having a self-hosted installation.
I'm not aware of any reason it wouldn't be possible. Have you tried setting it up as described in this wiki page?
https://confluence.dimagi.com/display/commcarepublic/Zapier+Integration
@pablo.mendoza OpenFn is an integration platform with local and in-country deployment options. It can connect with ANY app including CommCare: https://www.openfn.org/what
I've worked on several CommCare integration projects recently, let me know if you have specific integration questions I can maybe help answer.