Best Free Relational Database of 2025

KS DB Merge Tools is an easy to use diff & merge tool for MySQL, MariaDB, Oracle Database, SQL Server, PostgreSQL, MS Access, SQLite and Cross-DBMS databases allowing to compare and sync both schema and data. Starting with a schema changes summary, results can be narrowed down to object lists of particular object type (table definitions, views, etc.), and then down to definition of particular object. Data changes can be retrieved as a high-level list of changes totals across all tables in the database, each total row count can be observed as a side-by-side list of rows for the given table, each changed row can be analyzed for changes in each column. Various diff results provide quick filters to show only new/changed/new+changed items (schema objects or table data rows), ability to select required changed items and generate scripts to apply these changes to the other side database. This script can be executed immediately or saved for future use.

QuintaDB is an online database and web form builder. You don't need to learn any programming languages or web frameworks. In a matter of seconds, you can create and customize forms, charts, and maps and then put them on your blog, forum, or web page.

MySQL is the most widely used open-source database in the world. MySQL is the most popular open source database for web-based applications. It has been proven to be reliable, performant, and easy-to-use. This database is used by many high-profile web properties, including Facebook, Twitter and YouTube. It is also a popular choice for embedded databases, distributed by thousands ISVs and OEMs.

Percona Server is a fully-compatible, enhanced and open-source drop-in replacement for MySQL. It offers superior performance, scalability and instrumentation. Percona Server boasts over 5,300,000. Downloads and support for high-performance hardware provide excellent performance and reliability. Percona Server MySQL offers enterprise-grade features, higher uptime, and a variety of key benefits that increase database performance and efficiency. Because users spend less time tuning and administering, they have more time to focus on the most important priorities. Percona is a market leader providing enterprise-class software and support. Consulting, managed services, as well as training for open-source databases that are both on-premise or cloud-based, include consulting, training, and consulting. Percona was founded with the belief that everyone should be able to access scalable, secure and efficient database software features without any vendor lock-in or excessive fees.

Airtable allows you to organize your work in your own way. Airtable is an all-in-one collaboration tool that combines the power and flexibility of a relational database with ease-of-use spreadsheets. It syncs data instantly across all platforms and devices. You can choose from a variety of formats to view the tasks at hand: grid, calendars, Kanbans, galleries, and forms.

Microsoft SQL Server 2019 includes intelligence and security. You get more without paying extra, as well as best-in-class performance for your on-premises requirements. You can easily migrate to the cloud without having to change any code. Azure makes it easier to gain insights and make better predictions. You can use the technology you choose, including open-source, and Microsoft's innovations to help you develop. Integrate data into your apps easily and access a rich set cognitive services to build human-like intelligence on any data scale. AI is built into the data platform, so you can get insights faster from all of your data, both on-premises or in the cloud. To build an intelligence-driven company, combine your enterprise data with the world's data. You can build your apps anywhere with a flexible platform that offers a consistent experience across platforms.

Compare and synchronize sql data visually. Compare table, view or query data and see differences highlighted on the screen. Compare table metadata, generate sql sync script, use the command line and internal scheduling to automate comparison and data synchronization. • Cross-dbms support with ODBC. • Compare resultsets of any size. • Native 64-bit application. • Multi-threaded, multi-core support. • 30-day full trial. • Free for comparing data and metadata.

Knack is an easy-to-use application builder that is designed for non-developer business owners. Drag-and-drop allows users to create intuitive apps for CRM/Lead manager, Membership Directory, Project manager, Inventory manager, Quote/Order manger, or HIPAA compliant apps. Existing users love how easy it was for them to take their entire app with them on the move, whether they are using an Android or iOS device. Collaboration functions, which include whiteboards and tag & look tools, can make it easier for larger teams with multiple admin users to work efficiently. The automated analytics dashboard dashboard allows you to monitor application usage and how customers or staff interact with it.

ERBuilder Data Modeler, a GUI data modeling tool, allows developers to visualize, design and model databases using entity relationship diagrams. It automatically generates the most common SQL databases. Share the data model documentation with your team. You can optimize your data model with advanced features like schema comparison, schema synchronization, and test data generation.

You can create flat or relational databases with unlimited fields, tables, and rows. A custom report builder is included. Create custom reports by connecting to compatible ODBC databases. You can create your own databases. Here are some highlights: Filter tables instantly - Ultra simple graphical-user-interface - One-click table and data form creation - You can open up to 5 databases simultaneously Export your data to comma-separated files - Create custom reports to all your databases - A complete helpfile for creating database reports - You can print tables and queries directly from your data grid - Supports any SQL standard your ODBC compatible databases require For best performance and user experience, please install and run this database app with full administrator rights. Requirements: . 1024x768 Display Size . Windows 98 / XP / Windows 8 / Windows 10 - 32bit or 64bit No Java or DotNet are required. Green Energy Software. One step at a time, saving the planet

Firebird is a relational data base that supports many ANSI SQL standards. It runs on Linux, Windows, and a range of Unix platforms. Firebird provides high concurrency, high performance and powerful language support for stored procedure and triggers. Since 1981, it has been used in production systems under many names. The Firebird Project is a commercially-independent project consisting of C and C++ programmers, technical advisers, and supporters. It develops and enhances a multi-platform relational data management system that uses the source code released by Inprise Corp (now Borland Software Corp) 25 July 2000.

Interactive querying that is serverless for analyzing data stored in IBM Cloud Object Storage. You can query your data right where it is stored - there are no ETL, databases or infrastructure to manage.

The enterprise database for time series, documents, and vectors. Store any type data and combine the simplicity and scalability NoSQL with SQL. CrateDB is a distributed database that runs queries in milliseconds regardless of the complexity, volume, and velocity.

TimescaleDB is the most popular open-source relational database that supports time-series data. Fully managed or self-hosted. You can rely on the same PostgreSQL that you love. It has full SQL, rock-solid reliability and a huge ecosystem. Write millions of data points per node. Horizontally scale up to petabytes. Don't worry too much about cardinality. Reduce complexity, ask more questions and build more powerful applications. You will save money with 94-97% compression rates using best-in-class algorithms, and other performance improvements. Modern cloud-native relational database platform that stores time-series data. It is based on PostgreSQL and TimescaleDB. This is the fastest, easiest, and most reliable way to store all of your time-series information. All observability data can be considered time-series data. Time-series problems are those that require efficient solutions to infrastructure and application problems.

Apache Phoenix combines the best of both worlds to enable OLTP and operational analysis in Hadoop. This allows for low-latency Hadoop applications. HBase is used as the backing store for Apache Phoenix, which combines the power of SQL and JDBC with ACID transaction support and flexibility of late bound, schema-on read capabilities from the NoSQL realm. Apache Phoenix is fully compatible with other Hadoop tools such as Spark and Hive. It also integrates with Pig, Flume and Map Reduce. Become the trusted Hadoop data platform for OLTP, operational analytics and Hadoop via well-defined APIs. Apache Phoenix compiles your SQL query into a series HBase scans and orchestrates their running to produce regular JDBC results sets. Direct use of HBase API along with coprocessors, custom filters and other tools results in performance of milliseconds or seconds for small queries.

Your database should follow the trend of distributed applications and architectures. With a distributed SQL database, you can deploy wherever you want, whenever you want, and however you want. Migration of existing SQL applications to a multi-node distributed architecture that can dynamically scale in and out. Our Transaction Engines and Storage Managers (SMs), work together to ensure ACID compliance across multiple Nodes. You can deploy in a distributed architecture. Multiple nodes are required to deploy a database. The loss of one or more nodes will not cause the loss of access to the database. Deploy TEs or SMs to meet your variable workload requirements, or deploy in the various environments your team uses: in public and private clouds, hybrid environments, and across clouds.

Free to create, manage, query, and explore Valentina DB and SQLite databases. You can create business reports in Valentina Studio Pro, Valentina Server, or in an application using an Application Developer Kit. Standard backward engineering with forwarding engineering in Valentina Studio Pro Create diagrams from existing databases and reverse engineering. Add new objects to diagrams. SQL queries can be written with color syntax and auto-completion. Define, manage, save favorite queries; access recent queries. Each function has a function browser dictionary. Consoles for errors and warnings. Search, Export result records to CSV, JSON or Excel. Edit multiple properties at once. You can drill down to fields and tables; it is a fast way to search. Create diagrams from existing databases by reverse engineering. Diagrams can be updated with new objects. Manage privileges and users by adding and dropping users and groups.

SAP HANA is an in-memory database with high performance that accelerates data-driven decision-making and actions. It supports all workloads and provides the most advanced analytics on multi-model data on premise and in cloud.

IBM Informix®, a fast and flexible database that can seamlessly integrate SQL, NoSQL/JSON and time series data, is available. Informix's versatility and ease-of-use make it a popular choice for a wide variety of environments, including enterprise data warehouses and individual application development. Informix is also well-suited for embedded data management solutions due to its small footprint and self-managing capabilities.

Apache Druid, an open-source distributed data store, is Apache Druid. Druid's core design blends ideas from data warehouses and timeseries databases to create a high-performance real-time analytics database that can be used for a wide range of purposes. Druid combines key characteristics from each of these systems into its ingestion, storage format, querying, and core architecture. Druid compresses and stores each column separately, so it only needs to read the ones that are needed for a specific query. This allows for fast scans, ranking, groupBys, and groupBys. Druid creates indexes that are inverted for string values to allow for fast search and filter. Connectors out-of-the box for Apache Kafka and HDFS, AWS S3, stream processors, and many more. Druid intelligently divides data based upon time. Time-based queries are much faster than traditional databases. Druid automatically balances servers as you add or remove servers. Fault-tolerant architecture allows for server failures to be avoided.

PolarDB is for business-critical databases that require high concurrency, fast performance, and automatic scaling. With 15 low latency read replicas and up to 100 TB per database cluster, you can scale up millions of queries per second. PolarDB is six times faster that standard MySQL databases and offers the same security, reliability, availability, and cost-effectiveness as traditional commercial databases. PolarDB is built on the database technology and best practices that have been developed over the past decade to support large-scale events like the Alibaba Double 11 Global Shopping Festival. We are pleased to offer Always Free ApsaraDB (all three versions) for developers. This is available when you use no more that 1 instance (2-core, 8GB of memory, and up 50GB of storage). Register now to keep this benefit. You can renew each month by signing up. The availability of regional resources is subject to change.

Volt Active Data is a data platform that makes your tech stack more efficient, faster, and cheaper. It allows your applications and your company to scale seamlessly to meet the ultra low latency SLAs of 5G and IoT. Volt Active Data is designed to complement your existing big data investments such as NoSQL and Hadoop, Kubernetes and Kafka, as well traditional databases or data warehouses. It replaces the many layers that are required to make contextual decisions about streaming data with one unified layer that can handle everything from ingest to action in less then 10 milliseconds. There is a lot of data in the world. It's all stored, forgotten, then deleted. "Active Data" refers to data that must be acted upon immediately in order to gain business value. You have many options for data storage, both traditional and non-SQL. If you are able to act quickly enough to 'influence' the moment, there is data that you can also make money with.

It is a highly scalable, embedded SQL database that can be accessed from anywhere. It also includes commercial-grade data security, disaster recovery, change synchronization, and data security.