Free libraries online software for linux

LBC Libraries is a set of easy C libraries that provide classical data types and structures (string, hash, queue, stack, tree).
LBC Libraries package is focused on simplicity and portability. It uses ANSI C (C98 standard not required), and provides the most generic approach possible so that queues can have items of different types, hashes can have keys of different data types, trees can be binary trees or have arbitrary numbers of branches, etc.
Enhancements:
- This release adds minor API changes, enhances the documentation, and fixes major bugs in LBCstring.

Regnum Online is a MMORPG game, that wants to invite you to join our world and play for free. The only thing we require is that you fight for your realm.
Regnum Online is a massive multiplayer online role playing game (MMORPG MMORPG) for the PC where the player are immersed in a 3D virtual world. There they can live as Elves, Humans Dwarves, or Dark Elves having exciting adventures, exploring the wild lands or joining an army of players to take on the other kingdoms armies."
The game is in beta stage, but already offers many quests, items, and monsters, not to mention the large number of both english-, spanish-, and portuguese-speaking players youll meet in-game.
Main features:
- Regnum offers 3 realms to choose from.
- 9 fully customizable player characters.
- Hundreds of quests.
- The ability to capture forts and castles.
- Expansive lands to explore.
- Glorious graphical environments.

POCO C++ Libraries project are the next generation C++ class libraries for network-centric applications.

POCO, the C++ Portable Components, is a collection of open source C++ class libraries that simplify and accelerate the development of network-centric, portable applications in C++. The libraries integrate perfectly with the C++ Standard Library and fill many of the functional gaps left open by it.

Their modular and efficient design and implementation makes the C++ Portable Components extremely well suited for embedded development, an area where the C++ programming language is becoming increasingly popular, due to its suitability for both low-level (device I/O, interrupt handlers, etc.) and high-level object-oriented development. Of course, POCO is also ready for enterprise-level challenges.

The POCO libraries free developers from re-inventing the wheel, and allow them to spend their time on more worthwhile areas, such as getting things done quickly and working on the features that make their application unique.

DAEMon Raco Libraries (DRLibs) is a collection of useful functions, objects, and routines for C++.
Enhancements:
- This release adds new libraries to manage object lists: doublelist.dr.h, simplelist.dr.h, and sortedlist.dr.h.

PoJoe Component Libraries project is a set of Java POJO components, originally developed for OSMQ. Developers have found these components useful in building robust enterprise applications.
Of note are: a FIFO queue that utilizes memory until a size threshold is reached, paging overflow elements to a disk cache; a dynamic discovery mechanism for locating remote processes by name over an IP network, eliminating the need to identify a remote service with a specific host computer; and a set of peer-to-peer async message components that support n concurrent message publishers for each named subscriber.
Enhancements:
- Minor enhancements and bugfixes, and changing the license from GNU Lesser to Apache 2.0.