A powerful, cross platform, SQL database system
Firebird RDBMS offers ANSI SQL features & runs on Linux, Windows & several Unix platforms. Features excellent concurrency & performance & powerful stored procedure & trigger language. WEBSITE link is below, TRACKER is http://tracker.firebirdsql.org
db4o is the world's leading open source object database for Java and .NET. Leverage fast native object persistence, ACID transactions, query-by-example, S.O.D.A object query API, automatic class schema evolution, small size (http://developer.db4o.com)
NeoDatis ODB is a new generation Object Oriented Database. ODB is a real native and transparent persistence layer for Java, .Net, Groovy, Scala and Google Android. ODB is very simple and very fast and comes with a powerful query language.
Object-Relational Main-Memory Embedded Database system tightly integrated with C++ language. Use OS virtual mapping mechanism to access data. Provides subset of SQL language with OO extensions. Support of transactions, fault tolerance, replication.
Provides a .NET 2.0 interface for the Berkeley DB database engine. Written in C#, but accessible to other CLS-compliant languages as well.
DBLX3 Relational Database System
DBLX 3.1 is available! DBLX is a multi-user, client-server relational database. The design goals of DBLX are to produce a very small, very fast database which can be used with standard ANSI sql. DBLX source code is available in C# and Java. DBLX includes the server component, a command-line client, as well as client APIs. DBLX is well-documented so that you can just get the database, drop it on to your favorite system and start using it immediately. Go to the Discussion section to read the latest on DBLX!
Simplified ADODB interface library for MySQL on Mono/.NET. The library can be used to port MS ADODB project to an Mono environment.
Generic Object Oriented Database System Distributed thick-client OODBMS using aspect-oriented approach to build transparent interface to database from OO programming languages (C++, Java, C#)
AhMeBa is an XML file-based metabase engine. It targets small data driven applications that don't require a powerfull database engine or need a light, mobile database such as personal websites and small bussiness applications.
Aristotle is an active training simulation that is capable of dynamically and adaptively training any subject in any language using the learners own personality traits and learning modality. This project is currently being developed in PHP/MySQL.
CSDerby is not CloudScape-Derby(for Java) but rather Derby forked/ported to CSharp. Specifically it is intended to be a native c# Embedded DB for the mono/net platform with the ADO.NET API instead of the JDBC API.
EmGeeGen is a server-client information distribution system, tailored for use with the EmGee role playing system (though the theoretical platform should be useful for a variety of tasks).
IQSearch is an XQueryX query processor and special-purpose XML repository. The XML repository acts much like a traditional RDBMS, but is specifically tuned for the storage and indexing of XML documents (inc. full-text). The system will be coded in C#.
Jaguar is highly loaded, distributed and easily scalable search engine. Main parts: NoSQL database server, Сommunication Queue server, multi-threaded Scanner and Analyzer services, Management tool.
The JProgress project provides tools for connectivity with Java clients and the Progress database. JProgress provides an n-tier software architecture for database access for executing remote requests over WANs and the Internet.
Jukuu is a bilingual sentence search engine. According users' queries, It helps users to search similar sentences of another language. With high performance architecture, It can retrieve result sets from billion sentence pairs within 0.0001s.
Kira is a database backend solution for building large scale websites.
Object-based database for Windows CE with C++ and .Net interface
Develop the offline and online management
Model driven code generation can improve coding standards, speed, quality of development and reduce your costs. From my experience generating code from XML using XSLT is one of the best and fastest solutions. This is just the base of the framework presenting the idea, any code template can be implemented upon request. Some sample generators are present for SQL / PLSQL / C# / AnsiC / Java The main target is to generate DTO/BDO/POJO objects based on the database definitions in multiple languages aligning all technologies used by a development team. If you are willing to contribute drop a message.
ObjectBlox is a collection of libraries and utilities that provide a variety of useful services and functions for building distributed, cross-platform applications. It is written entirely in C# and runs on the .Net and Mono runtimes.
Complete ORM .NET framework that goes beyond regular ORM's. It includes data acess, bussines logic and user interface automation, centralization and standarization.
Embedded NoSQL object-oriented database engine for .NET and Mono
OstrivDB is an embedded NoSQL object-oriented database engine for Microsoft .NET and Mono. OstrivDB was named after the Oster river (the little river in little town where author lives). Features: - Caching for Select queries. - Indexing. - Batch of queries. - Views. - InMemory objects and views. - No special query language (LINQ used). - Integrated sorting and paging. - Multithreaded data processing. - Custom input/output and serialization. Requirements: - Microsoft .NET Framework 4.0 or Mono (tested on FreeBSD 9.1 and Mono 2.11.4).
Second Symthium Server