Fully managed PostgreSQL database with a free tier including 500MB storage.

Railway is a cloud platform offering a variety of services including databases, with a focus on usage-based pricing to optimize costs. It provides flexible plans for developers and teams, allowing them to pay only for the resources they use.

EdgeDB is a next-generation database that combines the best of SQL and GraphQL, offering a strictly typed, declarative schema with built-in migrations and based on PostgreSQL.

Fully managed, cost-effective relational database service for PostgreSQL, MySQL, and SQL Server with a free plan for personal projects and small-scale deployments.

PlanetScale offers serverless MySQL and Postgres databases with a free tier up to 10GB storage. It provides high-availability clusters, autoscaling storage, and unlimited IOPS. Ideal for developers and enterprises needing scalable database solutions.

Globally Distributed Database

Distributed SQL database designed for resilience and scalability, offers a free tier suitable for smaller projects.

FaunaDB is a transactional and developer-friendly database delivered to users as a secure web-native API. It offers freedom from issues related to database provisioning, sharing, replication, maintenance, scaling, or correctness. FaunaDB supports relations, documents, and graphs for unmatched modeling flexibility, and features real-time streaming and GraphQL support. It is configuration-free, provisioning-free, and available instantly as a serverless utility.

TiDB Cloud is a unified distributed SQL database that combines HTAP (Hybrid Transactional/Analytical Processing), vector search, and ACID transactions. It is designed for production AI agents and multi-agent systems, offering horizontal scalability and strong multi-tenant isolation.

Managed TursoSQL database with a free tier for lightweight use.

InfluxDB Cloud offers a range of plans from free to dedicated, providing scalable and secure time series data storage and analytics.

Xata is a serverless data platform built on top of Postgres, offering a fully managed, high-availability database service with features like auto-scaling, zero-downtime branching, and data anonymization.

Parse open-source BaaS on the Cloud, offers a free tier.

The easiest, most advanced managed Memcache with free tier and reasonable pricing.

Aiven provides an all-inclusive and transparent platform to stream, store, and serve data on any cloud. It offers a variety of services including Apache Kafka, PostgreSQL, MySQL, and more, with seamless integration and high availability.

Managed PostgreSQL, offers a hobby tier suitable for experimentation.

Real-time Data Platform

Serverless PostgreSQL with a free tier up to 3GB storage.

Managed serverless Redis with global low latency and multi-region replication. Offers generous free plans and flexible pricing options.

Microsoft's globally distributed, multi-model database service with a free tier.

NoSQL document database with a free tier for limited usage.

Managed document database based on Apache CouchDB

Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. It offers both on-demand and provisioned capacity modes, allowing users to choose the best pricing option for their workload.

A fully-managed, auto-scaling cloud service designed for your dynamic workloads, compatible with MySQL and offering a free tier.

Astra DB is a fully managed, cloud-native vector database service built on Apache Cassandra®. It offers vector search capabilities essential for AI applications with 20% higher relevance and 74x faster responses. The service provides a serverless experience with flexible scaling and pay-as-you-go pricing. Free tier available.

Fully managed Redis database service with a free plan for personal projects and small-scale deployments.

Managed NoSQL database with a free tier up to 512MB.

Managed PostgreSQL integrated with Vercel, free tier for small projects.

Offers managed databases like PostgreSQL, MySQL, and Redis. Relatively affordable options.