Stack Overflow - Community-based Q&A part of the Stack Exchange platform.

Oak Engage - Oak Engage is a digital workplace for enterprises that need to communicate with their workforce. Connect your teams. Engage your people.

The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.

Zendo - Zendo allows you to sell productized, subscription and custom services. Collaborate and collect payments. Create quotes and invoices. Eliminate multiple tools and enjoy the simplicity.

Askalot - Askalot is a next generation CQA (Community Question and Answer) system.

Livetiles - Intranet solution for small to large businesses