UseResponse!

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:

UserVoice communities are the easiest way to turn customer feedback into action: 1. Share ideas. 2. Vote up the best. 3. Respond, implement & repeat!Create Forum Free accounts & trials. Signing up in 60 seconds! UserVoice allows the customers to vote on feedback and ideas submitted in the customer community. There is a limit on the number of votes a user can spend at any given time.

PHPBack is a web application made with PHP/MySQL that you can easily implement into your website. It gives your customers a way to communicate their ideas to improve your products. User feedback has proved to be really effective even if you have a community project or a commercial project. Since PHPBack is an open source project under GNU GPL, you can download it for free and modify it if you want.

OTRS is the leading help desk software solution that makes the communication with your clients more transparent and easier. From incidents to service requests, with the web-based Open Source help desk software, OTRS, no communication is lost and customer requests are routed automatically to the right service team, ensuring they are answered more quickly. Free of license costs and with an open and flexible architecture OTRS makes it possible for service organizations to build a customized and powerful service management solution resulting in high-quality service at minimal operational cost. Since Version 5 OTRS offers responsive design and works on any mobile device. A new chat feature including webRTC based audio and video chat, appointment calendar for improved team collaboration and resource planning plus fully encrypted messaging is now available. »

Intercom shows you who is using your product (the user's region, browser, local time etc.) and makes it easy to personally communicate with them through targeted, behavior-driven email and in-app messages.

User or customer feedback system with voting facility about proposals done by users. Similar function as the UserVoice system.

UserEcho gives you the opportunity to create a modern Community to support customers in a few minutes. It includes support forum with the possibility of voting for ideas, Helpdesk, Knowledge Base and Online Chat.

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.

Brimir is an open source helpdesk system. It allows you to send and receive support emails through a friendly web interface.Received emails are converted to tickets, which can be assigned to 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.

Idea Informer is a idea forum similar to uservoice or getsatisfaction. Individual forums are created as subdomains of idea.informer.com and there is a widget to include a feedback overlay that the web page users can use without leaving your site.

Kayako is effortless customer service software that helps teams be more productive and build customer loyalty.