diff --git a/Works-in-progress.md b/Works-in-progress.md
index 01ce1e7..a08b797 100644
--- a/Works-in-progress.md
+++ b/Works-in-progress.md
@@ -18,6 +18,25 @@
         - [ ] `equal`
         - [ ] `lexicographical_compare` (using 3-way comparisons)
         - [ ] `begin` and `end`
+    - Communication
+        - [ ] Message passing abstraction
+        - Snapshot
+            - [ ] `chandy_lamport`
+            - [ ] `lai_yang`
+        - Routing
+            - [ ] `directed_ring_routing`
+            - [ ] `undirected_ring_routing`
+            - [ ] `chandry_misra`
+            - [ ] `merlin_segall`
+            - [ ] `toueg`
+            - [ ] `frederickson`
+        - Election
+            - [ ] `chang_roberts`
+            - [ ] `franklin`
+            - [ ] `dolev_klawe_rodeh`
+            - [ ] `itai_rodeh`
+            - [ ] `echo_with_extinction`
+            - [ ] `ieee1394_election`
 - [ ] Datastructures
     - [ ] `flat_tree`
     - [ ] UTF-8 `string` (See BigJ's string)