Ticketing

Zammad

Zammad is an open-source helpdesk software that centralizes customer communications and helps deliver great service experiences efficiently.

FreeScout

Self-hosted email management system with shared inboxes, automation, and powerful collaboration features for efficient customer support.

Erxes

All-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.

Frappe Helpdesk

Helpdesk software which helps you streamline your company's support, offers an easy setup, clean user interface, and automation tools to resolve customer queries efficiently

Bugsink

Bugsink offers real-time error tracking with self-hosting capabilities, allowing easy installation and connection to any app using Sentry-compatible SDKs.

Bugzilla

General-purpose bugtracker and testing tool originally developed and used by the Mozilla project

GlitchTip

Error tracking app to collect errors reported by your app

Libredesk

Modern customer support desk. Single binary app

MantisBT

Bug tracker, fits best for software development.

Request Tracker

Enterprise-grade issue tracking system

ITFlow

Client IT documentation, ticketing, invoicing and accounting for MSPs (Managed Service Providers).

OTOBO

Flexible web-based ticketing system used for customer service, help desk, IT service management.

Forgejo

Roundup Issue Tracker

Simple-to-use and -install issue tracking system with command-line, web, REST, XML-RPC, and e-mail interfaces. Designed with flexibility in mind - not just another bug tracker

Deskpro

Full Help

Jira

Jitbit Helpdesk

SupportPal

Telebugs