! Release Date
! Links
|-
| SeaMonkey 2.17
| April 2
| [http://www.seamonkey-project.org/releases/seamonkey2.17/changes Release Notes]
|-
| Thunderbird 17.0.5
| April 2
| [https://www.mozilla.org/en-US/thunderbird/17.0.5/releasenotes/ Release Notes]
|-
| Thunderbird 17.0.5esr
| April 2
| [https://www.mozilla.org/en-US/thunderbird/17.0.5esr/releasenotes/ Release Notes]
|-
| Firefox 17.0.5esr