I think the list should have the following too:

- Surespot: encrypted IMs between users
- Redphone: more private alternative to things like Viber
- Gibberbot: OTR messaging from device unlike Maemo/Harmattan devices which lack such a feature
- LBE Security Master: Control permissions, ads etc of every single application on your device. Closed-source app but the functionality it provides is extremely useful especially for those who want to track what every single app is doing/requesting on device.
- rsync backup for Android
- UCCW: Alternative to QueenBeeCon widget + has many pre-built themes on play store which can be modified to one's liking
- Juice SSH: Kinda feel it performs much better than all the other ssh apps around. Supports public keys (a must!).

Edit:

Didn't realize titanium backup pro isn't on the list too; its a must for backing up/restoring apps+data while hopping around custom ROMs...