Best Free Database Software in 2026
The best free database software in 2026 is PostgreSQL for most applications, MySQL or MariaDB for websites and CMS platforms, SQLite for mobile and embedded apps, MongoDB Community for flexible document data, and DuckDB or ClickHouse for analytics. All are open source or free to use. If you prefer not to run servers, Supabase, Neon, MongoDB Atlas and Firebase offer free cloud tiers, and Airtable, Baserow and NocoDB give non-developers free spreadsheet-style databases.
- PostgreSQL is the best all-round free database for new applications.
- SQLite needs no server and suits mobile apps, desktop tools and prototypes.
- Free cloud tiers remove setup work but have storage and usage limits.
- No-code tools such as Airtable, Baserow and NocoDB help non-developers manage data without code.
- "Free" covers the software licence; you still pay for hosting, backups and expert time at scale.
Best Free Database Software at a Glance
Licences and limits can change; check each project's website before choosing a database for a commercial product.
| Database | Type | Licence | Best for |
|---|---|---|---|
| PostgreSQL | Relational (SQL) | Open source (PostgreSQL licence) | Most web apps, SaaS, analytics, geospatial (PostGIS), AI vectors (pgvector) |
| MySQL Community | Relational (SQL) | Open source (GPL) | Websites, WordPress, PHP apps |
| MariaDB | Relational (SQL) | Open source (GPL) | MySQL-compatible apps wanting a fully community-led option |
| SQLite | Embedded relational | Public domain | Mobile apps, desktop software, prototypes, edge devices |
| MongoDB Community | Document (NoSQL) | Free (SSPL) | Flexible JSON data, catalogues, content |
| Valkey | In-memory key-value | Open source (BSD) | Caching, sessions, queues, leaderboards |
| DuckDB | Embedded analytics | Open source (MIT) | Fast analysis of files and data on a laptop or server |
| ClickHouse | Columnar analytics | Open source (Apache 2.0) | Real-time analytics on large event data |
| Neo4j Community | Graph | Free (GPL) | Relationships, recommendations, fraud detection |
| Apache Cassandra | Wide-column (NoSQL) | Open source (Apache 2.0) | Very large, write-heavy distributed workloads |
| Microsoft SQL Server Express | Relational (SQL) | Free edition | Small .NET and Windows apps (up to 10 GB per database) |
| Oracle Database Free | Relational (SQL) | Free edition | Learning Oracle and small Oracle-based apps, with resource limits |
Free Relational (SQL) Databases
PostgreSQL
The most capable free relational database, with strong standards support, JSON columns, full-text search and extensions such as PostGIS and pgvector. The default choice for new applications.
MySQL Community Edition
Fast, widely supported and the database behind WordPress and many PHP apps. Easy to host almost anywhere.
MariaDB
A community-developed fork of MySQL that stays compatible with most MySQL applications.
SQLite
A serverless database stored in a single file. Built into Android, iOS and most browsers and ideal for local and embedded storage.
Free NoSQL and Specialised Databases
MongoDB Community
Stores data as flexible JSON-like documents, popular for fast-changing data models.
Valkey and Redis
In-memory stores for caching and real-time features. Valkey is the open-source fork maintained under the Linux Foundation; Redis is free for most uses under its own licences.
DuckDB
An embedded analytics database that queries CSV and Parquet files at high speed with SQL.
ClickHouse
A columnar database for real-time analytics on billions of rows.
Neo4j Community
A graph database for data where relationships matter most.
Free Database Management Tools
| Tool | Works with | Use |
|---|---|---|
| DBeaver Community | Most SQL and many NoSQL databases | Universal database client |
| pgAdmin | PostgreSQL | Administration and queries |
| MySQL Workbench | MySQL | Design, queries and administration |
| MongoDB Compass | MongoDB | Visual data browsing and queries |
| DB Browser for SQLite | SQLite | Open and edit SQLite files |
| Azure Data Studio and SQL Server Management Studio | SQL Server | Queries and administration |
Free Cloud Database Tiers
Free tiers change often and usually limit storage, connections, compute time or inactivity. They are great for learning and MVPs, but production apps should plan for a paid tier, backups and monitoring.
| Service | Database | What the free tier suits |
|---|---|---|
| Supabase | PostgreSQL with auth, storage and APIs | Side projects and MVPs that need a full back end |
| Neon | Serverless PostgreSQL | Small apps, branches for testing, scale-to-zero |
| MongoDB Atlas (free cluster) | MongoDB | Learning and small apps with a few hundred MB of data |
| Firebase (Spark plan) | Firestore and Realtime Database | Mobile and web apps with real-time sync |
| AWS, Azure and Google Cloud | Managed SQL and NoSQL services | Free tiers or credits for new accounts, with time and usage limits |
| Cloudflare D1 | SQLite at the edge | Lightweight apps on Cloudflare Workers |
Free No-Code Database Tools for Non-Developers
Airtable (free plan)
Spreadsheet-style databases with views, forms and automations, limited records per base on the free plan.
Baserow
An open-source Airtable alternative you can use in the cloud or self-host.
NocoDB
Turns an existing MySQL or PostgreSQL database into a spreadsheet-style interface, open source and self-hostable.
Google Sheets with AppSheet
Simple data storage with no-code app building on top for small teams.
LibreOffice Base
A free desktop database for small offices, similar in purpose to Microsoft Access.
How to Choose the Right Free Database
| If you need... | Choose |
|---|---|
| A general-purpose database for a new web app or SaaS | PostgreSQL |
| WordPress, Drupal or a PHP app | MySQL or MariaDB |
| Local storage inside a mobile or desktop app | SQLite |
| Flexible documents with changing fields | MongoDB Community or PostgreSQL JSONB |
| Caching, sessions or real-time counters | Valkey or Redis |
| Fast analytics on files or large event data | DuckDB or ClickHouse |
| Data with complex relationships | Neo4j Community or PostgreSQL with graph extensions |
| No server management | Supabase, Neon, MongoDB Atlas or Firebase free tier |
| A database without writing code | Airtable, Baserow or NocoDB |
Questions to Ask Before You Choose
What does your data look like?
Structured tables, flexible documents, relationships or events?
How much will it grow?
Thousands of rows or billions?
Who will run it?
Do you have someone to manage servers, backups and updates?
What does your team know?
SQL skills transfer across PostgreSQL, MySQL and SQLite.
Do you need compliance?
Encryption, audit logs and data location rules for regulated data.
Is the licence right for you?
Some "free" licences limit offering the database as a service.
The Hidden Costs of "Free" Databases
For many teams, a managed database service or expert support costs less than downtime or data loss.
| Cost | Why it matters |
|---|---|
| Hosting | Servers or cloud instances to run the database |
| Backups and recovery | Automated, tested backups to avoid data loss |
| Security | Patching, encryption, access control and monitoring |
| Performance tuning | Indexes, query optimisation and scaling as data grows |
| Expert time | Database administration and troubleshooting |
| High availability | Replicas and failover for systems that cannot go down |
Signs You Have Outgrown a Free Setup
Slow queries
As data grows into millions of rows.
Free tier limits
On storage, connections or compute are being reached.
Downtime risk
Because there are no replicas or tested backups.
Compliance needs
For audit logs, encryption and data residency.
Spreadsheets and no-code tools
That can no longer handle your workflow or users.
Custom Database Applications
When spreadsheets, Access files or no-code tools become hard to manage, a custom database application brings data, workflows and reporting together in one secure system. Typical builds include inventory and order systems, CRM and customer portals, reporting dashboards and internal tools on PostgreSQL or MySQL, with web and mobile interfaces.
| Project | What is included | Cost (USD) | Timeline |
|---|---|---|---|
| Database design and setup | Schema design, managed hosting, backups, security baseline | $3,000–$12,000 | 2–4 weeks |
| Migration from spreadsheets or Access | Data cleaning, migration and a simple web interface | $8,000–$30,000 | 4–8 weeks |
| Custom database application | Web or mobile app, roles, workflows, reports, integrations | $25,000–$100,000+ | 2–6 months |
| Performance and scaling project | Query tuning, indexing, replicas, monitoring | $5,000–$30,000 | 2–8 weeks |
How PerfectionGeeks Helps
Database selection and design
The right database and schema for your data and growth.
Migration
Move from spreadsheets, Access or legacy databases without losing data.
Custom applications
Web and mobile apps built on PostgreSQL, MySQL or MongoDB.
Performance and reliability
Query optimisation, replication, backups and monitoring.
Proven delivery
12+ years, 200+ projects and a 4.9/5 rating on Clutch from 45+ reviews.
Related Reading
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