Free lightweight laptops software for linux

Lightweight C++ is a programming language that looks like C++ (a lightweight C++ dialect) and is directly translated to readable C by the lwc preprocessor.
Its more "K&R" and, well, more lightweight. Important thing about lightweight C++ is that by studying the generated C code it is easy to understand how OOP features are implemented and what is the cost of everything.
Adding new features and extensions is also very easy (much easier than adding new C++ extensions to gcc at least), and this is one of lwc goals: To keep evolving.
Main features:
- function overloading,
- member functions,
- inheritance,
- virtual functions (polymorphism),
- multiple inheritance,
- virtual inheritance and pure virtual functions,
- constructors, destructors,
- new and delete,
- default function arguments,
- simple exceptions (no auto destruction of locals)
- and a mechanism of simplistic templates (implemented as high-level multi-line macros).
- operator overloading (works with ptrs when it can)
- +other
Enhancements:
- Changed the generated code for the gcc cleanup attribute so that if a constructor throws, the destructor is not invoked. As in the simple case where we dont have the cleanup attribute and like C++.

LightWeight Time Tracker (LWTT) is a very simple time-tracking program. LightWeight Time Tracker provides independent real-time tracking of multiple tasks (such as programming, lectures, presentations, etc.).

The data are saved to an XML file under the home directory.

light-monitor is a transparent panel that depends only on X and Xft. The project comes with light-calendar, a simple, transparent, and lightweight calendar.
These two programs are written to consume the lowest possible amount of resources.
Main features:
- vol Manages the volume (pcm and vol). To change the current volume just clic on it or use the mouse-wheel.
- cpufreq Manages the scaling_governor : blue means powersave, blue and green means ondemand, and blue green and red stands for performance. To change to the next one, just clic on the processor
- load Shows the current load on the system and the processor temperature
- time Shows the time
- date Shows the date
- network Shows the cumulative bandwidth over all network interfaces except lo. It is hidden if current upload and download are null
- ac Shows if the power supply is plugged for laptop
- battery Shows the current percentage of remaining charge in the battery if it is not full. IF ac is unplugged, it shows an estimation of the remaining time too.
Light-calendar
light-calendar is a simple, transparent, and lightweight calendar (12Ko). It is distributed under the license GPLv2.
To see the next month, click on the right arrow. The previous month is accessible using the left one. To come back to the current month, use the o between the two arrows. You can move it by dragging it outside those buttons.
Enhancements:
- The semantic of buttons were changed.
- Now when a button is clicked, its window is redrawn.
- A bug in the config file reader that sometimes duplicated the last widget was fixed.
- The cpufreq applet is now more reactive.
- The README was updated.

Laptop-Hotswap kernel module enables hot-swapping for disk drives with full DMA support under Linux. It requires kernel 2.6.15+ and ACPI.
I think it ought to work on just about any laptop, although Im not as familiar with ACPI as Id like to be. It works fine on my T22. There could be issues with laptops with two expansion bays -- I shut down the entire ide1 interface and fire it back up, and I do all my watching on the ACPI device for the IDE1/Master. So if you had a slave device, and you ejected the master, your slave will go bye-bye. Thinking about ways around that, but they dont export too much of the ide driver. I think itd be easy to handle, you just have to make sure youre not using either master or slave whenever you eject one of them.
At least on my laptop, dont go pulling things while your laptop is sleeping. Do it when its awake.
The floppy support should work, but my floppy drive isnt with me right now.
Theres one parameter -- auto_eject. If you set it to 1, the driver will automatically shut down and unregister the IDE interface upon getting a request for ejection (On my T22, I pull a little switch and a lever pops out -- the drive is still connected at that point, but it shows as a request for ejection). If your laptop doesnt have a mechanism for that:
echo -n "MSTR eject" > /proc/acpi/lths
Will shut down and software-eject the drive, and you can safely pull it and insert another.
See the scripts in config/ -- theyre made to work with acpid to handle the ejection and umounting and insertion. The mount/umount stuff only matters for a drive caddy, I suppose.
It shouldnt matter what you have in your laptop at boot. This module also fixes that annoying thing on my T22 where if I dont have a ultrabay battery in at boot, I cant ever see its status.
Enhancements:
- Support for the Fujitsu S7020 (and possibly other laptops using a PATA bay with an SATA main disk).

Enhancements:

• Add f to fullscreen & q to exit program
• Add use key to scroll image
• Fix issue slideshow can't zoom fit
• Fix issue rotate
• Add feature zoom in & out (code not yet)

Requirements:

• gtk+

Yet Another V4L Application (or yava for short) is lightweight v4l framegrabber with support for TrueType fonts and ftp-upload.
Yet Another V4L Application project is written in ANSI C.
It uses Andreas Schifflers excellent SDL_bgrab library for frame grabbing, SDL for internal image manipulation, SDL_ttf for TrueType font rendering, libcurl for ftp uploads and libpng for snapshot writing.
Main features:
- Lightweight, using pretty standard libraries
- Tuner support
- FTP-upload (active and passive modes)
- TrueType font rendering
- Text color (RGB) selection
- Vertical text positioning (top, center, bottom)
- Horisontal text positioning (left, center, right)
- Font selection and number of pts
- Snapshots in png
- Live viewer or console mode

WMTosh is an ACPI monitoring applet, targeted at toshiba laptops. It can show cpuspeed, temperature, battery level, fan function.

WMTosh also allows a limited control of those functions, plus lcd brightnes. As for now limited to linux.

I wrote this small dockapp in 2003, when i got my hands on the Toshiba Satellite Pro 6100, on which i was and am using ACPI. Back then there was almost no ACPI-aware DockApp. This one is based on WMiFS project, big thanks go to its authors. The first version supported ACPI performance and battery objects, as well as toshiba fan and toshiba brightness setting.