C# Database Software

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Browse free open source C# Database Software and projects below. Use the toggles on the left to filter open source C# Database Software by OS, license, language, programming language, and project status.

  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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  • Cut Data Warehouse Costs by 54% Icon
    Cut Data Warehouse Costs by 54%

    Easily migrate from Snowflake, Redshift, or Databricks with free tools.

    BigQuery delivers 54% lower TCO with exabyte scale and flexible pricing. Free migration tools handle the SQL translation automatically.
    Try Free
  • 1
    KeePass

    KeePass

    A lightweight and easy-to-use password manager

    KeePass Password Safe is a free, open source, lightweight, and easy-to-use password manager for Windows, Linux and Mac OS X, with ports for Android, iPhone/iPad and other mobile devices. With so many passwords to remember and the need to vary passwords to protect your valuable data, it’s nice to have KeePass to manage your passwords in a secure way. KeePass puts all your passwords in a highly encrypted database and locks them with one master key or a key file. As a result, you only have to remember one single master password or select the key file to unlock the whole database. And the databases are encrypted using the best and most secure encryption algorithms currently known, AES and Twofish. See our features page for details.
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    Downloads: 232,700 This Week
    Last Update:
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  • 2
    Technical analysis library with indicators like ADX, MACD, RSI, Stochastic, TRIX... includes also candlestick pattern recognition. Useful for trading application developpers using either Excel, .NET, Mono, Java, Perl or C/C++.
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    Downloads: 6,438 This Week
    Last Update:
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  • 3
    Firebird

    Firebird

    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. More information and downloads at https://firebirdsql.org/, issue tracker is https://github.com/FirebirdSQL/firebird/issues
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    Downloads: 4,442 This Week
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  • 4
    CompactView

    CompactView

    Viewer for Microsoft® SQL Server® CE database files (sdf).

    CompactView is a viewer for Microsoft® SQL Server® Compact Edition (SQLCE) database files (sdf). This software requires Microsoft® .NET Framework 4.0 to operate.
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    Downloads: 135 This Week
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
    Start Free
  • 5
    NHibernate
    .NET port of the excellent Java Hibernate which provides Object/Relational mapping to persist objects in a relational database.
    Downloads: 80 This Week
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  • 6

    Report Manager

    Reporting tool, libraries and designer

    Report Manager is both a print scheme designer (report) and a high level printing (reporting) engine. Also a TCP Report Server and a Web Report Server (PDF on the fly), supports Windows and Linux. Connectivity to almost all databases is provided.
    Downloads: 81 This Week
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  • 7
    Npgsql

    Npgsql

    Npgsql is the .NET data provider for PostgreSQL

    Npgsql is an open source ADO.NET Data Provider for PostgreSQL, it allows programs written in C#, Visual Basic, F# to access the PostgreSQL database server. It is implemented in 100% C# code, is free and is open source. An Entity Framework Core provider is also available and exposes some features unique to the PostgreSQL database to EF Core users. Finally, a legacy Entity Framework 6.x (non-Core) provider is also available but is no longer being actively maintained. Npgsql is the open source .NET data provider for PostgreSQL. It allows you to connect and interact with PostgreSQL server using .NET.
    Downloads: 16 This Week
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  • 8
    ClosedXML

    ClosedXML

    A .NET library for reading, manipulating and writing Excel

    ClosedXML is a .NET library for creating and manipulating Excel files without requiring Microsoft Excel, designed for easy integration and performance.
    Downloads: 8 This Week
    Last Update:
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  • 9
    Duplicati

    Duplicati

    Store securely encrypted backups in the cloud!

    Duplicati is a free and open source backup client for securely storing your data. Duplicati stores encrypted, incremental, compressed backups on cloud storage services and remote file servers using AES-256 encryption, keeping your data safe and always updated. It works with most storage services, including Google Cloud and Drive, Amazon S3, Microsoft Azure and OneDrive, Dropbox, FTPOpenStack Storage (Swift), SSH (SFTP), WebDAV, Tencent Cloud Object Storage (COS), and more! Duplicati also works on all major platforms (Windows, Linux and OSX). Unlike many other backup solutions, Duplicati ensures that your data is stored securely far away and updated regularly. Incremental updates means it saves on bandwidth and storage space, with a scheduler that automatically keeps your backups up to date.
    Downloads: 7 This Week
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  • Host LLMs in Production With On-Demand GPUs Icon
    Host LLMs in Production With On-Demand GPUs

    NVIDIA L4 GPUs. 5-second cold starts. Scale to zero when idle.

    Deploy your model, get an endpoint, pay only for compute time. No GPU provisioning or infrastructure management required.
    Try Free
  • 10
    SQL Notebook

    SQL Notebook

    SQL Notebook — Casual data exploration in SQL

    SQL Notebook is a free Windows application for querying and analyzing data across multiple sources, including SQLite, PostgreSQL, Excel, and CSV files. It combines a SQL editor with a notebook interface, allowing for data exploration, transformation, and visualization in one place. SQL Notebook is ideal for analysts and data enthusiasts.
    Downloads: 6 This Week
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  • 11
    SQLite.org took over this project in 2010
    Downloads: 26 This Week
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  • 12
    EventStoreDB

    EventStoreDB

    The stream database optimised for event sourcing

    Persist your application data as streams of events with our open-source database, the best data storage solution for event-sourced systems. Available for free download on most platforms or use our managed service Event Store Cloud. EventStoreDB is an open-source database technology that stores your critical data in streams of immutable events. It was built from the ground up for Event Sourcing, we believe that makes it the best solution in the market for building event-sourced systems. Event Sourcing offers some great benefits over state-oriented systems; the key ones are explained below. An event-sourced system stores your data as a series of immutable events over time, providing one of the strongest audit log options available. All state changes are kept, so it is possible to move systems backward and forwards in time which is extremely valuable for debugging and “what if” analysis.
    Downloads: 5 This Week
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  • 13
    Garnet

    Garnet

    Garnet is a remote cache-store from Microsoft Research

    Garnet is a remote cache‑store developed by Microsoft Research. It delivers high throughput and low‑latency performance, supports scalability via clustering (sharding, replication, key migration, checkpointing, failover, transactions), and seamlessly integrates with existing Redis clients. Garnet offers much better throughput and scalability with many client connections and small batches, relative to comparable open-source cache-stores, leading to cost savings for large apps and services. Garnet demonstrates extremely low client latencies (often less than 300 microseconds at the 99.9th percentile) using commodity cloud (Azure) VMs with Accelerated Networking enabled, which is critical to real-world scenarios.
    Downloads: 4 This Week
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  • 14
    FileMasta

    FileMasta

    A search application to explore, discover and share online files

    A federated search application for discovering interesting files that are being shared online, such as video, music, books, software, games, subtitles and much more. All data is crawled by od-database which collects information about the contents of servers worldwide. We don't search file contents. We host no content, we provide only access to already available files in the same way Google and other search engines do.
    Downloads: 91 This Week
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  • 15
    FluentMigrator

    FluentMigrator

    Fluent migrations framework for .NET

    Fluent Migrator is a migration framework for .NET much like Ruby on Rails Migrations. Migrations are a structured way to alter your database schema and are an alternative to creating lots of sql scripts that have to be run manually by every developer involved. Migrations solve the problem of evolving a database schema for multiple databases (for example, the developer's local database, the test database and the production database). Database schema changes are described in classes written in C# that can be checked into a version control system. FluentMigrator is a .NET library that helps to version database schema using incremental migrations which are described in C#. The basic idea of the FAKE helper is to run FluentMigrator over the existing database using compiled assembly with migrations.
    Downloads: 3 This Week
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  • 16
    Arisen Studio

    Arisen Studio

    Browse, Download and Install Mods for PlayStation 3 & Xbox 360

    The elegant, powerful, and open-source mod manager. Arisen Studio allows you to easily browse through a regularly updated database of mods, game saves, homebrew, resources, themes, and much more for the PlayStation 3 and Xbox 360. All mods have been tested and verified in our library, which is populated by myself, a few friends, and awesome contributors. Arisen Studio can also be used as an FTP client to install and uninstall mods directly from your console. Without the need to search up old posts or use file managers - this will do everything for you.
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    Downloads: 15 This Week
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  • 17
    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)
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    Downloads: 19 This Week
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  • 18
    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.
    Downloads: 12 This Week
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  • 19
    The stuff here has no documentation and some of it may never be completed. This is my playground, use at your own risk.
    Downloads: 13 This Week
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  • 20
    eLibrary
    Books and eBooks library organizer. Catalog, tag and search your books database with ease. Automatically fetches the book's details and cover image from the web with a smart ISBN guesser.
    Downloads: 10 This Week
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  • 21
    LiteDB

    LiteDB

    An open source MongoDB-like database with zero configuration

    LiteDB is a serverless database delivered in a single small DLL (< 450kb) fully written in .NET C# managed code (compatible with .NET 4.5 and NETStandard 2.0). Install it via NuGet or just copy the DLL to your bin project folder. LiteDB is a simple and fast NoSQL database solution. Ideal for mobile apps (Xamarin ready), desktop/local applications, application file format, web applications, and one database per account/user data store. Portable UWP and Xamarin iOS/Android, ACID transactions, single datafile (like SQLite), recovery data in writing failure (WAL mode), map your POCO class to BsonDocument, fluent API for custom mapping. Cross collections references (DbRef), store files and stream data (like GridFS in MongoDB), LINQ query support, free for everyone, including commercial use. LiteDB supports SQL-like language for data and structure manipulations. You can insert, update, delete or query your database using a very similar SQL relational language.
    Downloads: 2 This Week
    Last Update:
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  • 22
    User contributed components that extends the functionality of NHibernate. More information in the wiki: http://www.nhforge.org/wikis/. Development List: http://groups.google.com/group/nhcdevs
    Downloads: 8 This Week
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  • 23
    OpenVista (R)
    OpenVista(R) is the open-source version of VistA, an enterprise grade health care information system developed by the U.S. Veterans Affairs and deployed at 1,500 global facilities. OpenVista is a registered trademark of Medsphere Systems Corporation
    Downloads: 7 This Week
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  • 24
    Database Query Tool - MS Query Analyzer look-alike. Original version from Query Express - www.albahari.com/queryexpress.html
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    Downloads: 13 This Week
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  • 25
    EF Core

    EF Core

    Object-database mapper for .NET

    EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with many databases, including SQL Database (on-premises and Azure), SQLite, MySQL, PostgreSQL, and Azure Cosmos DB. To install EF Core, you install the package for the EF Core database provider(s) you want to target. This tutorial uses SQLite because it runs on all platforms that .NET Core supports. This application intentionally keeps things simple for clarity. Connection strings should not be stored in the code for production applications. You may also want to split each C# class into its own file. Query and manage relational data in a .NET Core app with an Object-Relational Mapper (O/RM).
    Downloads: 1 This Week
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