+* Mattermost
+ * Description: SIPB's Mattermost instance for communication. Mattermost is an open source, private cloud slack alternative hosted on XVM.
+
+ * __Contact: Eric Jepsen, [efjepsen@mit.edu](mailto:efjepsen@mit.edu)__
+
+* CertAssist
+
+ * Description: Download and install your MIT personal certificate using the [CertAssist](https://certassist.mit.edu/) website, even if your browser is not supported by ca.mit.edu.
+
+ * __Contact: Anders Kaseorg, [andersk@mit.edu](mailto:andersk@mit.edu)__