Anchor CMS - Free and lightweight blogging system

UserVoice - UserVoice integrates easy-to-use feedback, helpdesk, and knowledge base management tools in one platform that empowers users to speak and companies to understand.

SpeakPipe - SpeakPipe is a tool enabling organizations to receive voice messages from the audience directly on the website.

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

WordPress - WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.

Zendesk - Zendesk is a beautiful, lightweight help-desk solution.