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Free and open-source, self-hosted customer support desk.
Open Source Ticketing System.
Frappe Helpdesk is an open source ticketing tool that helps you streamline your support workflows, handle issues efficiently, and delight customers – all at a fraction of the cost. If you are looking to boost agent productivity, reduce resolution times, and deliver exceptional customer experience, give Frappe Helpdesk a try.
Delightful customer relationships, at scale.
Customer engagement platform.
Open-source live-chat, email support, omni-channel desk.
An alternative to Intercom, Zendesk, Salesforce Service Cloud etc. 
Chatwoot is an open-source, self-hosted customer engagement suite. Chatwoot lets you view and manage your customer data, communicate with them irrespective of which medium they use, and re-engage them based on their profile.
Chatwoot gives you all the tools to manage conversations, build relationships and delight your customers from one place.
The fast, calm customer support platform for SaaS.
The future of customer support is here. The Business Messaging Platform For Every Company.
The all-in-one AI-powered business messaging platform that gathers teams, conversations, data and knowledge, around one place.
Zammad is a web-based, open source user support/ticketing solution.
Zammad is a web based open source helpdesk/customer support system with many features to manage customer communication via several channels like telephone, facebook, twitter, chat and e-mails.
Generate interactive, beautiful and insightful chat analysis reports.
A web app that takes chat exports from supported platforms and generates a single HTML file containing information, statistics and interactive graphs about them. Privacy is its main concern; chat data never leaves the device when generating reports.
Support Ticketing System
Complete customer support solution - feedback service, helpdesk, chat