475baefd1fc25b88e4045ee4d3ad36bd11dfbb79
  internal/Internal-Services.md
			| ... | ... | @@ -6,6 +6,10 @@ You are asked to show some creativity in terms of network usage and content. ;) | 
| 6 | 6 | |
| 7 | 7 |  There is a search engine at [search.dn42](https://search.dn42) that can also be used to discover services and content. It attempts to index all sites on DN42. | 
| 8 | 8 | |
| 9 | +## Matrix Server | |
| 10 | + | |
| 11 | +There is a matrix server at [buzzster.dn42](https://buzzster.dn42) which can be used from the Element application for Android and iOS and soon from the web. | |
| 12 | + | |
| 9 | 13 |  ## Certificate Authority | 
| 10 | 14 | |
| 11 | 15 |  xuu is maintaining an [certificate authority](/services/Certificate-Authority) for internal services. |