Help Scout!

osTicket is a widely-used open source support ticket system. It seamlessly integrates inquiries created via email, phone and web-based forms into a simple easy-to-use multi-user web interface. Manage, organize and archive all your support requests and responses in one place while providing your customers with accountability and responsiveness they deserve.

Freshdesk is an award-winning, online help desk software that allows you to support customers over email, phone, the web or even through Twitter and your company's Facebook page. With Freshdesk there is nothing to download or install, you don't have to worry about server upgrades/patches and your agents can support customers from anywhere. Popular features include:

InvGate Service Desk is a web-based ITIL-ready solution with an unprecedented user interface. Code-free config for Incident, Problem, Change, Asset & Knowledge processes. Smart ticket management, workflow automation & unmatched user collaboration.

Desk.com lets you see all your customers in one place and engage them across all your support channels (Twitter, Facebook, phone, email, chat and discussion boards) in one easy-to-use desktop. Be there for your customers — anytime, anywhere.

Zammad is a web based open source helpdesk/customer support system with manyfeatures to manage customer communication via several channels like telephone,facebook, twitter, chat and e-mails. Do you receive many e-mails and want to answer themwith a team of agents?

Jitbit HelpDesk is helpdesk software that has same price for ANY number of technicians. And it has everything a help-desk needs: 2-way email integration, asset tracking, knowledge base, file attachments and more.

Designed from the ground up to fit the specific needs of agile businesses, Reamaze can be fully integrated and embedded into your site or app for rich and seamless support conversation management via real time messaging, live chat, social media, email, and proactive engagement. The most relevant features comes bundled with Reamaze for free such as knowledge base / FAQ, CRM, workflow automation, access to a library of 3rd party apps, and a powerful API.

Helpy is written in Ruby on Rails 4.2 and released under the MIT license. Features include support tickets with email integration, community discussions, multilingual knowledge base and more:

With an innovative user interface, studied to offer a completly streamlined experience, Deskero takes care of the clients in the most simple and straight forward way, through both the traditional channels (mail and web) and the newest social media.

The Vivantio Platform is a comprehensive IT service management solution chosen by enterprises for its flexibility, reliability and configuration and integration capabilities.

Zent.IO is a Contact Center Cloud Software Multichannel that unify chat, phone and e-mail. All the communication channels will be answered from a single interface. The agent will only need a web browser

DeskPRO is the modern helpdesk platform.