TuxOnIce. Revolutionise the way you start your computer.
TuxOnIce is most easily described as the Linux equivalent of Windows' hibernate functionality, but better. It saves the contents of memory to disk and powers down. When the computer is started up again, it reloads the contents and the user can continue from where they left off. No documents need to be reloaded or applications reopened and the process is much faster than a normal shutdown and start up.

TuxOnIce has a long feature list, including the ability to cancel hibernating or resuming by pressing Escape, image compression to save time and space, a versatile plugin architecture, support for machines with Highmem, preemption and SMP.

The TuxOnIce website (this one) and mailing list provide support for dealing with issues arising. An IRC channel #tux-on-ice has been created on irc.freenode.net, where people may be able to help you with problems.

The primary author of TuxOnIce is Nigel Cunningham. A huge thanks must also go to Bernard Blackham, Florent Chabaud, Pavel Machek, Gabor Kuti and Michael Frank along with many others who have tested and contributed to the development of TuxOnIce.

TuxOnIce in action

Distros

Sabayon

TuxOnIce is included in all Sabayon flavours.

Ubuntu

We have a TuxOnIce PPA on Launchpad.

This PPA has precompiled Ubuntu kernels with TuxOnIce already compiled in, the userui binary and the hibernate script.

5 May 2011: 3.2 released
At long last, TuxOnIce 3.2 has been released! This version of TuxOnIce adds support for ZRam, storing compressed pages directly in the image instead of seeking to compress them again. It also includes a number of bug fixes and minor improvements over 3.1. May it serve you well.
4 September 2010: 3.2-rc2

A new release candidate is out. This fixes a small number of bugs and compilation warnings that were present in rc1.

26 August 2010: 3.2-rc1

TuxOnIce 3.2-rc1 is out. The main improvement over previous releases is the fixing of a couple of longstanding but hard to reproduce bugs. Users are encouraged to update for what will, I hope, be the most reliable TuxOnIce release ever.

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If you appreciate TuxOnIce, here's your opportunity to give something back. Donations will be used to help pay for the website hosting, and support Nigel in his work on getting TuxOnIce's improvements merged into Linus' tree!