Linux Distributions and Kernels for Mobile SmartPhones

Linux Distributions

GPE Phone Edition is meant to develop and deploy a GTK / GPE based implementation of a LIPS compliant software stack. It contains a set of applications, libraries and documentation to build software to be used for mobile phones and similar devices.
DigitalAirways: C language version of the Kaleido user interface (UI) building tools for phones running Linux
LifeVibes Multimedia for Qtopia . Philips Software has ported its multimedia libraries for mobile phones to Trolltech's development platform and application stack for Linux devices.
MIZI: Linux - Smart Phone Edition
MobileSoft: mFone .
MontaVista
NEC, Panasonic spin Linux mobile phone software
NTT DoCoMo: FOAM .
Open-Plug: ELIPS (Embedded LInux Plug-in System) is an embedded LINUX environment running on top of any native wireless platform.
PalmSource: mFone .
Trolltech: Qtopia Phone Edition - QPE
Wipro: Aqua mobile phone reference framework .
A-la-Mobile : Open Linux System Platform & Open Source Technology Provider fo Mobile Handsets
PokyLinux is an embedded Linux build system, distribution and developer environment which builds upon OpenEmbedded technologies. Poky's focus is purely on building stable optimised GNOME Embedded type platforms (X11/Matchbox/GTK+) together with a streamlined system layer and cross development environment.
Access Linux Platform - ALP

Mobile Development Kit: MKit UCN2410-c consists of a common ARM 9 chip-on-film platform, attached to a 3.5" touch-screen. It is a well-designed license free software stack and debugging JTAG board that makes customization easy and guarantees the shortest time to market. After development is finished, the platform can easily be put in the included plastic case, and the completed product shown to customers.