| SeaMonkey 2.16
| February 21
| [http://www.seamonkey-project.org/releases/seamonkey2.16 /#new Release Notes]
|-
| Thunderbird 17.0.3
| SeaMonkey 2.15
| January 8
| [http://www.seamonkey-project.org/releases/seamonkey2.15 /#new Release Notes]
|-
| Thunderbird 17.0.2