We use open source, contribute to those projects, and also maintain a few projects ourselves, listed below.
Simuliidae is a project of Blackfly Solutions, created in October 2018. We use the project as a basis for our managed hosting services. The goal of the project is to share tools and code for "open source" hosting of Drupal, CiviCRM and Wordpress, using Docker and containers.
Beanstream is a Vancouver-based electronic payment processor.
A couple of our clients wanted to make use of their services, so we wrote this CiviCRM Extension to provide server-to-server POST integration from CiviCRM to the Beanstream payment processor.
iATS Payments is a payment processor company that specializes in services for non-profits. iATS Payments has been supported for CiviCRM with a payment processor plugin that was originally written in 2007.
CiviNorth is a Drupal module that integrates the Represent OpenNorth website service with CiviCRM.
The project is hosted here:
http://drupal.org/project/civinorth
My original blog about it is here:
