Easy to use but powerful open-source support and ticketing system.

Email-based customer support application, help desk and shared mailbox (alternative to Zendesk and Help Scout).

Marketing, sales, and customer service platform designed to help businesses attract more engaged customers.

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.

Modern customer support desk. Single binary app.

Bug tracker, fits best for software development.

Real-time error tracking for your applications with all the details in one place. Easy setup with clear instructions included.

Enterprise-grade issue tracking system.

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

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

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

On-Premise help desk software that includes email, chat, voice & help centre publishing. Full visible source code and API.

A lightweight software forge focused on scaling, federation, and privacy (fork of Gitea).

Simple, easy to use help desk & knowledge base software. Custom branding, custom themes, restful API, communication channels, multi-company support, multi-language support, and much more! At least 1 new release per month.

Error tracking app to collect errors reported by your app.

Professional and extensible issue tracker.

Help desk software - simple but powerful.

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.

Powerful help desk software - easy, fast and intuitive.

Lightweight error tracker without a subscription (alternative to Sentry).