mypanellab.com is online survey panel that lets you make money on paid surveys. Panel is free to join and use. You can take surveys on your computer or mobile.
I really like WoltLab, they have a great Forum and the community is generally really nice The customer support is also awesome
iWadi - Take online paid surveys. Help your favorite brands and earn money online with iWadi online survey panel. Sign up for free.
phpBB - Raspberry Pi. The Raspberry Pi is a cheap, credit-card sized computer. The official website uses phpBB for their discussion forums. phpBB is not affiliated with nor responsible for any of the sites listed on the showcase.
SurveyLab - Professional online survey tool - best survey software for the best price - Satisfaction Surveys, NPS, Market Research, Online Survey Creation and real-time reports.
Discourse - Discourse is an open source discussion platform built for the next decade of the Internet.
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
XenForo - Intuitive. Social. Engaging. Fast. XenForo brings a fresh outlook to forum software.