# Top Free Relational Databases - Page 4 ## How Many Relational Databases Products Does G2 Track? **Total Products under this Category:** 182 ### Category Stats (Aug 2026) - **Average Rating:** 4.26/5 The average rating of products in this category, based on all submitted ratings - **Top Trending Product:** Apache Calcite (+1.1%) - Among all products in this category, Apache Calcite recorded the largest rating increase compared to last month _Last updated: August 06, 2026_ ## How Does G2 Rank Relational Databases Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 12,300+ Authentic Reviews - 182+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. ## G2 Grid® for Relational Databases ![G2 Grid® for Relational Databases plotting products by satisfaction and market presence](https://www.g2.com/categories/relational-databases/grids.png?focus%5B%5D=630&focus%5B%5D=967&focus%5B%5D=585&focus%5B%5D=1251&focus%5B%5D=40540&focus%5B%5D=986&focus%5B%5D=40868&focus%5B%5D=146570) Highlighted products: Microsoft SQL Server, Oracle Database, Amazon Relational Database Service (RDS), SAP HANA Cloud, Google Cloud SQL, MySQL, Amazon Aurora, and EDB Postgres AI Database. Underlying data: [Grid® JSON](https://www.g2.com/categories/relational-databases/grids.json?focus%5B%5D=microsoft-sql-server&focus%5B%5D=oracle-database&focus%5B%5D=amazon-relational-database-service-rds&focus%5B%5D=sap-hana-cloud-2025-10-01&focus%5B%5D=google-cloud-sql&focus%5B%5D=mysql&focus%5B%5D=amazon-aurora&focus%5B%5D=edb-postgres-ai-database) **Sponsored** ### RaimaDB RaimaDB: The High-Performance Embedded Database for Edge and IoT Systems RaimaDB is a high-performance, small-footprint database designed for edge computing, IoT, and embedded systems. Built on over three decades of database innovation, RaimaDB provides a powerful, reliable, and resource-efficient solution for developers building applications where data integrity, speed, and local storage are critical. Unlike large-scale enterprise databases, RaimaDB is purpose-built for environments with limited memory and processing power—such as industrial controllers, automotive systems, medical devices, and network appliances. Its lightweight architecture allows for fast transactions, deterministic performance, and minimal overhead, making it ideal for real-time applications. RaimaDB supports both SQL and C/C++ APIs, giving developers flexibility in how they access and manage data. It’s fully ACID-compliant, ensuring data reliability even in harsh or disconnected environments. With advanced features like in-memory performance, high availability, and flexible replication, RaimaDB enables secure local data processing while still integrating seamlessly with cloud or enterprise systems when connectivity is restored. The database can be deployed on a wide range of operating systems, including Linux, embedded Linux, Windows, QNX, and VxWorks, and can run on both ARM and x86 architectures. Its modular design allows for efficient scaling—from compact single-board computers to complex distributed networks. Trusted by global leaders in industries such as automotive, aerospace, energy, and telecommunications, RaimaDB powers mission-critical systems that demand reliability and speed. Developers choose RaimaDB for its ease of integration, low maintenance requirements, and proven performance under demanding conditions. Whether you’re building the next generation of connected devices or optimizing data handling at the edge, RaimaDB provides the robust foundation you need. Experience the efficiency of a database built for embedded and real-time systems—fast, reliable, and ready for the future of intelligent data management. [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=301&secure%5Bchosen_at%5D=2026-08-08T11%3A33%3A12Z&secure%5Bdisplayable_resource_id%5D=301&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=301&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=6173&secure%5Bresource_id%5D=301&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Frelational-databases%2Ffree%3Fcategory_id%3Drelational-databases%26locale%3Des%26page%3D4&secure%5Btoken%5D=6f854b8e54345f7113ff6d2407ea3c752e3eee2eeda22adb0b23e3c28a68af0f&secure%5Burl%5D=https%3A%2F%2Fraima.com%2Fdownload-trial%2F%3Futm_content%3Dproducts-raimadb-reviews%26utm_medium%3Dreferral%26utm_source%3Dg2&secure%5Burl_type%5D=free_trial) ### [XLeratorDB](https://www.g2.com/products/xleratordb/reviews) XLeratorDB is an In-Database Analytics calculation engine that provides a rich set of advanced high-speed financial, statistical and mathematical analytic functions designed to integrate seamlessly into database-driven applications. XLeratorDB Suite includes the following XLeratorDB function packages: financial, statistics, math, engineering, and strings - which include over 800 functions that plug into SQL Server transforming your database from a simple data processing engine into a world-class data analytics engine. **Average Rating:** 5.0/5.0 **Total Reviews:** 1 #### Who Is the Company Behind XLeratorDB? - **Seller:** [Westclintech](https://www.g2.com/sellers/westclintech) - **Year Founded:** 2008 - **HQ Location:** Irvington, US - **Twitter:** @XLeratorDB 14 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=40940a50dee1bc0a54e4adc3f084c06fb7228d4f0580a08096349c6c3309a421&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F556480&secure%5Burl_type%5D=linkedin_company_website) 3 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Medium #### What Are Recent G2 Reviews of XLeratorDB? **["Advance tool for SQL Server Windows and Analytics functions"](https://www.g2.com/survey_responses/xleratordb-review-4989037)** **Rating:** 5.0/5.0 stars _— Muhammad U._ [Read full review](https://www.g2.com/survey_responses/xleratordb-review-4989037) #### What Are G2 Users Discussing About XLeratorDB? - [What is XLeratorDB used for?](https://www.g2.com/discussions/what-is-xleratordb-used-for) ### [dotConnect for Adobe Commerce](https://www.g2.com/products/dotconnect-for-adobe-commerce/reviews) dotConnect for Adobe Commerce is an ADO.NET provider for working with Adobe Commerce data through the standard ADO.NET or Entity Framework interfaces. It allows you to easily integrate Adobe Commerce data into your .NET applications, and integrate Adobe Commerce services with widely used data-oriented technologies. dotConnect for Adobe Commerce has the same standard ADO.NET classes as other standard ADO.NET providers: MagentoConnection, MagentoCommand, MagentoDataAdapter, MagentoDataReader, MagentoParameter, etc. This allows you quickly get started with it and eliminates the need to study any Adobe Commerce data access specificities. #### Who Is the Company Behind dotConnect for Adobe Commerce? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for DB2](https://www.g2.com/products/dotconnect-for-db2-2024-12-10/reviews) dotConnect for Db2 is a high-performance ADO.NET data provider that helps software developers implement easy access to IBM Db2 databases in their applications. Our data provider allows integrating Db2 with .NET-based data-related technologies. It helps build all kinds of .NET applications and fully supports a wide range of Db2-specific features, works under secure SSL and SSH connections, and delivers seamless integration with Visual Studio. - Broad compatibility with .NET platforms and major Db2 versions - ORM support: EF Core, Dapper, NHibernate, LinqConnect, etc. - Full compliance with ADO.NET - Easy connection through SSL, SSH, proxy servers, and HTTP tunnels - Advanced encryption and data integrity - Integration with Visual Studio and design-time support - Regular updates and detailed documentation #### Who Is the Company Behind dotConnect for DB2? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for Dynamics 365](https://www.g2.com/products/dotconnect-for-dynamics-365/reviews) dotConnect for Dynamics 365 (formerly Dynamics CRM) is a high-end ADO.NET data provider for accessing and managing Dynamics 365 data through the standard ADO.NET or Entity Framework interfaces. It helps you easily integrate Dynamics 365 data into .NET applications. Our data provider has the same standard ADO.NET classes as other providers. This helps you get started quickly and eliminates the need to study any specifics of Dynamics 365. - Broad compatibility with .NET platforms, including WPF, Blazor, MAUI, Windows Forms, etc. - ORM support: EF Core, Dapper, NHibernate, LinqConnect, etc. - Full compliance with ADO.NET - SSL, SSH, proxy servers, and HTTP tunnels support - Integration with Visual Studio and design-time support - Regular updates and detailed documentation #### Who Is the Company Behind dotConnect for Dynamics 365? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for FreshBooks](https://www.g2.com/products/dotconnect-for-freshbooks-2024-12-10/reviews) dotConnect for FreshBooks is an ADO.NET provider for working with FreshBooks data through the standard ADO.NET or Entity Framework interfaces. It allows you to easily integrate FreshBooks data into your .NET applications, and integrate FreshBooks services with widely used data-oriented technologies. dotConnect for FreshBooks has the same standard ADO.NET classes as other standard ADO.NET providers: FreshBooksConnection, FreshBooksCommand, FreshBooksDataAdapter, FreshBooksDataReader, FreshBooksParameter, etc. This allows you quickly get started with it and eliminates the need to study any FreshBooks data access specificities. #### Who Is the Company Behind dotConnect for FreshBooks? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for Mailchimp](https://www.g2.com/products/dotconnect-for-mailchimp-2024-12-10/reviews) dotConnect for Mailchimp is a high-performance ADO.NET data provider that enables easy access to Mailchimp data from .NET applications. It offers full support for EF Core, Dapper, and NHibernate, along with a wide range of Mailchimp-specific features. Additionally, it features a powerful local SQL engine and other advanced capabilities. The provider ensures broad compatibility with various .NET platforms, including ASP.NET Core, Blazor, MAUI, .NET Framework, and more. - Easy access to Mailchimp without the need for specific client libraries - ORM support: EF Core, Dapper, NHibernate, LinqConnect, etc. - Full compliance with ADO.NET - Support for SSL, SSH, proxy servers, and HTTP tunnels - Regular updates with detailed documentation - Expert-level developer support #### Who Is the Company Behind dotConnect for Mailchimp? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for QuickBooks Online](https://www.g2.com/products/dotconnect-for-quickbooks-online/reviews) dotConnect for QuickBooks Online is a high-performance ADO.NET data provider that helps access and manage QuickBooks data through the standard ADO.NET or Entity Framework interfaces. It helps you easily integrate QuickBooks data into .NET applications. Our data provider has the same standard ADO.NET classes as other providers. This helps you get started quickly and eliminates the need to study any specifics of QuickBooks. - Broad compatibility with .NET platforms, including WPF, Blazor, MAUI, Windows Forms, etc. - ORM support: EF Core, Dapper, NHibernate, LinqConnect, etc. - Full compliance with ADO.NET - SSL, SSH, proxy servers, and HTTP tunnels support - Integration with Visual Studio and design-time support - Regular updates and detailed documentation #### Who Is the Company Behind dotConnect for QuickBooks Online? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for SQL Server](https://www.g2.com/products/dotconnect-for-sql-server-2024-12-10/reviews) dotConnect for SQL Server, formerly known as SQLDirect .NET, is an enhanced data provider for SQL Server that builds on ADO.NET technology and SqlClient to present a complete solution for developing SQL Server-based database applications. As part of the Devart database application development framework, dotConnect for SQL Server offers both high performance native connectivity to SQL Server and a number of innovative database development tools and technologies. dotConnect for SQL Server introduces new approaches for designing application architecture, boosts productivity, and leverages database application implementation. #### Who Is the Company Behind dotConnect for SQL Server? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for SugarCRM](https://www.g2.com/products/dotconnect-for-sugarcrm-2024-12-10/reviews) dotConnect for SugarCRM is an ADO.NET provider for working with SugarCRM data through the standard ADO.NET or Entity Framework interfaces. It allows you to easily integrate SugarCRM data into your .NET applications, and integrate SugarCRM services with widely used data-oriented technologies. dotConnect for SugarCRM has the same standard ADO.NET classes as other standard ADO.NET providers: SugarConnection, SugarCommand, SugarDataAdapter, SugarDataReader, SugarParameter, etc. This allows you quickly get started with it and eliminates the need to study any SugarCRM data access specificities. #### Who Is the Company Behind dotConnect for SugarCRM? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for Zoho Books](https://www.g2.com/products/dotconnect-for-zoho-books/reviews) dotConnect for Zoho Books is an ADO.NET provider for working with Zoho Books data through the standard ADO.NET or Entity Framework interfaces. It allows you to easily incorporate Zoho Books data into your .NET applications, and integrate Zoho Books services with widely used data-oriented technologies. dotConnect for Zoho Books has the same standard ADO.NET classes as other standard ADO.NET providers: ZohoBooksConnection, ZohoBooksCommand, ZohoBooksDataAdapter, ZohoBooksDataReader, ZohoBooksParameter, etc. This allows you to quickly get started and eliminates the need to learn any specific details of accessing Zoho Books data. - Direct access to the Zoho Books data - High performance - Comprehensive security features - Broad compatibility with .NET platforms - Visual Studio integration #### Who Is the Company Behind dotConnect for Zoho Books? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [dotConnect for Zoho Desk](https://www.g2.com/products/dotconnect-for-zoho-desk/reviews) dotConnect for Zoho Desk is an ADO.NET provider for working with Zoho Desk data through the standard ADO.NET or Entity Framework interfaces. It allows you to easily incorporate Zoho Desk data into your .NET applications, and integrate Zoho Desk services with widely used data-oriented technologies. dotConnect for Zoho Desk has the same standard ADO.NET classes as other standard ADO.NET providers: ZohoDeskConnection, ZohoDeskCommand, ZohoDeskDataAdapter, ZohoDeskDataReader, ZohoDeskParameter, etc. This allows you to quickly get started and eliminates the need to learn any specific details of accessing Zoho Desk data. - Direct access to the Zoho Desk data - High performance - Comprehensive security features - Broad compatibility with .NET platforms - Visual Studio integration #### Who Is the Company Behind dotConnect for Zoho Desk? - **Seller:** [Devart](https://www.g2.com/sellers/devart) - **Year Founded:** 1997 - **HQ Location:** Wilmington, Delaware, USA - **Twitter:** @DevartSoftware 1,736 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=79979469a3bee56c782598382543e7a4af65b7f1bcf71aea7d9fde07241e81e6&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F800325%2F&secure%5Burl_type%5D=linkedin_company_website) 249 employees on LinkedIn® ### [Hive](https://www.g2.com/products/the-guild-hive/reviews) Hive is an open-source GraphQL platform that streamlines API management and evolution. It serves as a Schema Registry, making it easy to publish schemas, compose federated services, and detect breaking changes. With full Apollo Federation support, Hive offers a drop-in replacement for Apollo GraphOS, allowing seamless integration with existing workflows. It also enhances GraphQL observability, providing insights into API usage and performance metrics. Covering all development and production needs, Hive elevates GraphQL API management with open-source flexibility. #### Who Is the Company Behind Hive? - **Seller:** [The Guild](https://www.g2.com/sellers/the-guild) - **Year Founded:** 2017 - **HQ Location:** N/A - **LinkedIn® Page:** [linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c0dafc9d35793fbd5036bd4ae4f8cec73f7fc44890d38819c1d4068a86886c96&secure%5Burl%5D=https%3A%2F%2Flinkedin.com%2Fcompany%2Fthe-guild-software&secure%5Burl_type%5D=linkedin_company_website) 15 employees on LinkedIn® - [‹ Prev‹ Prev](/es/categories/relational-databases/free?category_id=relational-databases&order=g2_score&page=3#product-list) - [1](/es/categories/relational-databases/free?category_id=relational-databases&order=g2_score#product-list) - [2](/es/categories/relational-databases/free?category_id=relational-databases&order=g2_score&page=2#product-list) - [3](/es/categories/relational-databases/free?category_id=relational-databases&order=g2_score&page=3#product-list) - 4 - Next ›Next › Spotlight Categories [Digital Asset Management Software](https://www.g2.com/categories/digital-asset-management) [Board Management Software](https://www.g2.com/categories/board-management) [Professional Services Automation Software](https://www.g2.com/categories/professional-services-automation) [Online Reputation Management Software](https://www.g2.com/categories/online-reputation-management) [Field Service Management Software](https://www.g2.com/categories/field-service-management) Similar Categories - [NoSQL Databases](/categories/nosql-databases) - [Database Management Systems (DBMS)](/categories/database-management-systems-dbms) - [Big Data](/categories/big-data) - [Database as a Service (DBaaS)](/categories/database-as-a-service-dbaas) - [Database Comparison](/categories/database-comparison) - [Desktop Database](/categories/desktop-database) - [Real-time Analytic Database](/categories/real-time-analytic-database) - [Structured Data Archiving and Application Retirement](/categories/structured-data-archiving-and-application-retirement) - [Time Series Databases](/categories/time-series-databases) - [Vector Database](/categories/vector-database) [Browse Relational Databases Themes](/categories/relational-databases/themes)