Top 5 Free Hosted Wiki Services

 Here are the top 5 free hosted wiki services:

1. Wikia (now known as Fandom): A popular platform with a large community and a wide range of customizable templates and extensions.

2. WikiSpaces: Offers a simple and intuitive interface, suitable for small to medium-sized wikis, with features like page history and file uploads.

3. Google Sites: A simple and easy-to-use platform that integrates well with other Google apps, ideal for small projects and team collaboration.

4. PBworks: A user-friendly platform with a focus on collaboration and project management, offering features like file sharing and task assignment.

5. Zoho Wiki: A part of the Zoho suite of productivity tools, offering a simple and feature-rich platform with integration with other Zoho apps.

Please note that while these services are free, some of them may have limitations or offer premium features at an additional cost.