Free invoicing system software for linux

Linux Mobile System project (LMS) is a full Linux system whose support is the new USB Flash Memory Drives. The intention is to boot any PC with USB support with our system and therefore we will have every administration and analysis applications that we have selected, so we will not need install it. This way, always we will be able to get our Linux system ready to use in our pocket.
This project arose with the intention to study the Linux system of exhaustive way and simultaneously enjoy with it. The initial idea is to fuse two separated disciplines: the programming and the systems management. So well center our study in the denominated "system programming, as much networking level as at device level (drivers).
Main features:
- To initiate our Linux system from memories flash USB.
- The system will be a selection of common GNU tools in every system: disk diagnosis, memory, hardware, networks monitoring tools, etc.
- LMS Tux
- As far as possible well develop new tools and/or utilities with the objective to study deeply the underlying technology.
- The programming languages used will be C, C++, Python and Perl, without forget the system shell scripts.
- The resources minimization (disk space, memory...) isnt a functional objective of the developments.
LMSs main aim is to achieve a highly specialized distribution of GNU/Linux which can carried through the USB Flash Memory Drives. Once the distribution is ready in the USB device, it can be carried in your own pocket and you can start up any PC x86 with no need to install it directly in the PC.
The LMS system is aimed at the development of specific tasks such as network administration, security analysis of networks, and recovery and repair of host data, as well as all information exchange, which is what makes it different from other portable systems such as "live CDs". The main idea is to carry all the potency of Linux and our tools in our own pockets, ready to be used.

YaaCs is a CATI system that lets you manage and do interviews. YaaC system divides the survey process into administration and strictly operative tasks.
It make easy monitoring survey progress (giving several information), and it allows the management of the the survey with several administration tools.
It simplifies the interviewers work reading all contacts data from an easy and functional GUI. It can send faxes via hylaFAX and save all contacts data in a PostgreSQL database.
Enhancements:
- This release features a rewrite from scratch, VoIP support (IAX2 protocol), automatic outcomes classifcation, a new database design, support for internationalization (with English and Italian translations), new monitoring tools (via the tclami package), instant messaging (IM), the ability to recruit interviewers through SMS, phone, or email, an improved replicates algorithm, and an new installation system that uses autotools.

Learning Management System allows users to manage online learning classes.
It allows them to set up classes, create assignments online, and send messages to students from within the system for tracking.
Learning Management System is a simple system to move academic classes onto the Web in order to reach a larger audience.
Enhancements:
- This release fixed two bugs in the library file system.

LMS (LAN Management System) is the integrated system of networks management designed for various size internet providers (ISP).

That software writed in PHP, Perl and C, works with variuos database systems.

System-CoW is a system monitoring SuperKaramba theme.

You must have installed hddtemp and all i2c sensors in kernel to have this script working!

You must launch:

hddtemp -d /dev/hd[abc] // if you have 3 disks!

to have temperature working!

For gentoo add a line to /etc/conf.d/local.start to load the command line at startup!

All System Info is a system info SuperKaramba theme. Simple english version...
It shows:
- System Info
- CPU usage
- Network Usage
- Memory Load
- HDD usage