MUSCLE (Multi User Server Client Linking Environment) is an N-way messaging server and networking API. It includes client-side networking APIs for various languages, including C, C++, C#, Delphi, Java, and Python. MUSCLE lets programs communicate over a network via streams of serialized Message objects. The included server program ("muscled") lets its clients message each other and store information in its server-side hierarchical database. The database supports flexible queries via hierarchical wildcarding, and "live" updates via a subscription mechanism.
hamsterdb Embedded Storage is an embedded database engine for C/C++, including wrappers for Java, .NET, and Erlang. It supports in-memory databases, very fast database cursors, "record number" databases, ACID transactions, and duplicate keys. hamsterdb is very fast and highly configurable. It compiles and runs on Unix platforms, Linux, Microsoft Windows, and embedded platforms.
CodeBase is a high-speed xBASE compatible database engine for C/C++, Visual Basic, Delphi & Java programmers. You can use CodeBase to write high performance database applications that are multi-user compatible with FoxPro, dBASE and Clipper, create anything from a Java applet to a full-blown Windows database application to a simple DOS utility, write scalable applications that can be deployed as single-user, multi-user or client/server, all without changing any of your source code, and port your applications to Windows, DOS, UNIX, OS/2, and Macintosh. There's a free 30-Day Test Drive option available. CodeBase is available for every major operating system including Windows XP, 2000, 9x, NT, CE, DOS, OS/2, Macintosh, and a variety of Linux and UNIX platforms including Solaris, SunOS, HP/UX, AIX, SCO, and others.
FlagShip is a database development and porting system for moving xBase-based languages to Unix. It is a highly-optimized 4GL language, syntactically compatible to other xBase dialects like dBase, Clipper, Fox, etc. It is object oriented, but you don't need any OOP knowledge to use it. It supports the same code for DOS and Unix. It allows you to add C sources externally or inline in the program source, but does not require any C knowledge.
The c-tree Plus embedded database engine offers developers several APIs that provide low-level routines, ISAM-level control, and higher-level interfaces. c-tree Plus is distributed in complete C source, has been ported to 100+ environments and includes a robust database Server SDK. It can be used to develop single user and peer-to-peer applications, or the client-side for applications using FairCom's database server, the c-tree Server.
The c-tree Server is FairCom's multi-threaded, low-maintenance database server. It supports heterogeneous networks and lets dissimilar clients attach concurrently to any single or combination of c-tree Servers. Portability is afforded through over 30 supported platforms and 5+ supported communication protocols. c-tree Servers are easy to set up and require no system tuning or DBA. Additionally, FairCom offers a Server Side Development System, allowing developers to build their own application-specific database server.
VectorSpace Database (VSDB) provides multi-dimensional similarity search capability in a robust server package. It is a server that allows any socket-capable programming language to post and search vectorspaces of multi-dimensional data. Data can be of any base datatype (e.g. text, objects, dating profiles, sessions, ecommerce orders, etc.). VSDB also offers a clustering capability that can display groupings of data based on common dimensions. A built-in thesaurus feature can help bridge multiple-similar-dimensions in search or clustering.
MariaDB is a database server that offers drop-in replacement functionality for MySQL. It is built by some of the original authors of MySQL, with assistance from the broader community. In addition to the core functionality of MySQL, it offers a rich set of feature enhancements including alternate storage engines, server optimizations, and patches.