1
vote
SuiteCRM
Open Source CRM software solution. Available as SaaS or on-premise. Has a pretty large community.
https://suitecrm.com
API docs available at https://docs.suitecrm.com/developer/api
Menu
Feature Requests
Got an idea for a new feature or integration? We’d love to hear it! You can find our roadmap here.
Ben Anderson shared this idea 
Copyright © 2025 Very Good Plugins
We have looked at SuiteCRM, but because tagging doesn’t work (https://community.suitecrm.com/t/catagory-tagging-contacts/12398/5) without an addon (https://www.sugaroutfitters.com/addons/tagme), it’s not a great fit. We don’t want to require our customers to purchase another 3rd party addon to make WP Fusion work.
Happy to revisit that if SuiteCRM one day adds native tagging support and a tags API.