Well in terms of hardware, but in terms software they make devices that do the same things.
In terms of hardware there is simply nothing similar to the form factor on the Nokia n810. But there are many devices that are capable of running multiple oses and doing Linux things.
Thanks for the input. You provided many recommendations for devices that do different things, but as it stands, the N810 still does it all! Patiently waiting for another comparable device... possibly for infinity.
* Similar screen size OK
* Pull out keyboard (NO VIRTUAL!) (Desire Z OK)
* USB host FAIL
* Open OS OK (GUI is not open but that is also not for the Maemo GUI)
* Wifi, bluetooth, etc. OK
* Easy Debian (for Open Office) FAIL
* Moderate, affordable price
* Slots for expanding memory OK
* Capable of running various OSes (with or without flashing) FAIL
iPhone 4 / iPad / iPod Touch 4G
* Similar screen size OK (iPad FAIL)
* Pull out keyboard (NO VIRTUAL!) FAIL
* USB host FAIL
* Open OS OK when jailbroken (FreeBSD, basis for iOS 4 is open, but GUI is not open but that is also not for the Maemo GUI)
* Wifi, bluetooth, etc. OK when jailbroken )
* Easy Debian (for Open Office) FAIL
* Moderate, affordable price FAIL for iPhone OK for others
* Slots for expanding memory FAIL, OK for iPad + camera connection kit + jailbreak)
* Capable of running various OSes (with or without flashing) OK for iPhone running Android
The Desire Z fails pretty much every openness test you can throw at it right now.
I think this is only valid for the T-Mobile branded version of the Desire Z.
The nonbranded version lacks this so-called 'protection' and can be rooted.
What about the Ocosmos OCS1 http://www.youtube.com/watch?v=tRTtm9iGihc
Display: 4.8" Capacitive 1024×600 screen
Storage: 32GB SSD
Wifi: 802.11 b/g
Controllers: OMOS Key Interface
GPS included
USB 2.0 port (full size) and USB Mini
Camera: 3.0mp on rear. 1.3mp on front
Audio port 3.5mm
Micro SD card slot
HDMI out port (via micro-connector)
The only problem is that it is kinda big and it runs Windows, but you should very easily be able to put Ubuntu or Fedora on it. Pricing is unknown. The thing also has keyboard.
The Sharp Lynx SH-10B looks quite promising, provided the OS can be replaced with a sane distro and the device ever manages to reach the western hemisphere.