Free online and offline software for linux

Online Grades is the leading free-software project that allows K-12+ student grades to be posted onto a dynamic web site. Online Grades is not a web-based gradebook. Instead, it accepts grade export information from several popular gradebook software programs such as Easy Grade Pro, Gradekeeper, Misty Citys Grade Machine, and PGGP and places the grade information online securely.
Student, Teachers, Parents, and Administrators each get their own personal login into Online Grades, which allows them to see all of the grades in all of their classes. If parents have more than one student at a school or district, they only need one parent login to see the grades of all of their students.
The Online Grades software is free; there is no software cost to post your grade results online. However, to use the software, both an internet-accessible web server with PHP and access to a MySQL database are necessary. Because of these requirements, Online Grades is commonly set up and configured by a school or district tech person. If your school or district does not have the resources to set up Online Grades, you can alternatively buy hosting for your grades. Hosting is even available for individual teachers interested in using Online Grades.
Online Grades is free because the software is developed by volunteers and is in-part sponsored by the schools using the Online Grades software. Online Grades was originally based on the SourceForge project Basmati, and while backward compatibility has been maintained, Online Grades has many more features than the original Basmati grade posting software.
Main features:
Administration Center
- Password Protected
- Support for Multiple Administrators
- Admin Editor/Deletion
- Staff Editor/Deletion
- Built-in Email Client, Email Any or All Staff from with-in appication
- Email Welcome Info & Forgotten Passwords
- Easily Look up Student Password
- Helpful SQL Tools (Need need to know sql)
- Posting History (See What Others Are Doing & When)
- Add Students
- Edit/Delete Students
- Online Grades Stats
- Update Checker
- Ability to run a SQL Query
- Skinable & Skin Chooser
Faculty Center
- Password Protected
- Lost Password Recovery
- Simple and Easy to Use
- View any student grades with a couple clicks
- Server Time Check (Know when you submitted)
- Ability to Email Other Staff Members
- Add Notes To Entire Class
- Add Notes To One Student (Privite Note)
- Posting History (See What Others Are Doing)
- Easy Removal of Classes
- Ability to Change Personal Information
- Skinable
Student Center
- No Names
- Simple and Easy to Use
- Random Password
- Lost Password Recovery
- Shows All Classes In One Easy Place
- Each Class Has Detailed Grade book (See Demo)
- Show All Class Memo
- Email Teachers within Application (No Email Client Needed)
- Preferences
- Skinable
Parent Center
- Ability to have multiple student per account (login)
- Simple and Easy to Use
- Random Password
- Lost Password Recovery
- Shows All Classes In One Easy Place
- Each Class Has Detailed Grade book (See Demo)
- Show All Class Memo
- Email Teachers within Application (No Email Client Needed)
- Preferences
- Skinable
Enhancements:
- This release incorporates several bugfixes and adds a few new minor features.
- There are no database changes this release, so upgrading consists only of upgrading the files on your server to the new versions.
- A bug which caused all interfaces to go offline when the student area is set to be offline was fixed.
- The bug which prevented faculty from changing their password was fixed.

online.php analyses /var/log/ppp-usage and displays connection statistics. It also prints some information about your current PPP connection.
Well, I was inspired by the script Onlinecalc by Michael Schlenstedt (Michael@adsl4linux.de). His script is heavily based upon "calc" by Ulrich Schmitz.
Since Onlinecalc did not fit my needs, I did a complete rewrite in php.
Main features:
- reads /var/log/ppp-usage and prints a table with a row for each month.
- also calculates the values of the current connection.
- completely written in PHP.
- display connect-time as dd:hh:mm:ss
- display volumes as 123 456 789,12 MB
- displays chronologically (maybe I will change the sorting later to reverse)

Stamits Online Poker project is a simple OpenGL poker game that can be played online with another person.

Compilation:

Make sure you have the GNU C and C++ compilers.

Get MOGUL, the Minimal OpenGL Utility Library, compile and install it (or use a compiled binary version, if there is one available). Instructions should be included.

Open `Makefile and uncomment the lines below the label `Unix configuration.

Say `make. The result should be an executable named `sopoker in the current working directory.

Wurm Online is 3D FPP MMORPG game.

Online multiplayer role-playing game, where players walk freely in a big 3D world chatting, gathering resources, building towns, making items, trading, fighting with other players and computer controlled creatures. Chose your path - crafting or PvP fighting. Join a village or live solo. Massive skill tree with skill affected by your actions.