Every free relational databases tier that clears our bar in 2026: 12 offers meet the criteria and 1 offer is demoted with a named reason. Our membership test: tables, rows and joins under SQL — Postgres, MySQL, SQLite family. We could not confirm today's terms for 4 of them, and on all 4 our own read did not confirm them. Each row says why.
Serverless Postgres with branching — free tier includes 100 CU-hours/month per project, 1 GB of Postgres storage per project (20 GB total across all projects), up to 100 projects, 10 branches per project, Neon Auth (60K MAU), auto-scaling up to 2 CU, scale-to-zero, 5 GB of Object Storage, and Functions (10 active capacity-hours, 400 waiting capacity-hours, 1M invocations). No credit card is required. Best for open source projects.
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://neon.com/, where it says: “The backend for apps and agents. Build with Lakebase Postgres, Auth, Functions, Storage, and an AI Gateway: instant, branchable, serverless.”. How we use this
Managed PostgreSQL, MySQL, or Valkey (Redis-compatible) — 1 CPU, 1 GB RAM, 1 GB disk per service. No time limit
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://aiven.io/postgresql, where it says: “Aiven for PostgreSQL - Managed Postgres database service with Postgres extensions, database forking, connection pooling.”. How we use this
Edge SQLite — 100 databases, 5 GB storage, 500M rows read/month, 10M rows written/month free
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://turso.tech/, where it says: “A full SQLite drop-in replacement, built for the agentic future.”. How we use this
filess.io is a platform where you can create two databases with up to 10 MB per database of the following DBMS for free: MySQL, MariaDB, MongoDB, and PostgreSQL.
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://filess.io, where it says: “Ship your full stack apps in seconds. Web Hosting, Managed Databases (MySQL, PostgreSQL, MongoDB, MariaDB & SQL Server) and Secure Tunnels.”. How we use this
Open-source Postgres platform (Apache 2.0) with copy-on-write branching and scale-to-zero. Self-hosted on Kubernetes — free forever. The managed platform, Xata Cloud, is paid: from $0.012 an hour plus $0.28 per GB-month of storage, billed by the minute, with a 14-day free trial.
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://xata.io/, where it says: “Postgres platform with instant branching and scale-to-zero compute.”. How we use this
Postgres development platform: database, Auth, Storage, Realtime and Edge Functions. The Free plan is $0: unlimited API requests, 50,000 monthly active users, a 500 MB database on a shared CPU with 500 MB RAM, 5 GB egress plus 5 GB cached egress, 1 GB file storage, 500,000 Edge Function invocations, and Realtime with 200 concurrent connections and 2 million messages a month. Free projects are paused after 1 week of inactivity, with a limit of 2 active projects. Pro starts at $25 a month for the first project and includes $10 a month of compute credits, enough for one Micro instance. Best for unlimited usage needs.
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://supabase.com/, where it says: “Build production-grade applications with a Postgres database, Authentication, instant APIs, Realtime, Functions, Storage and Vector embeddings.”. How we use this
Multi-model cloud database — The 'Start' plan offers 1GB of storage free, forever, and a free compute instance with 0.25 vCPU and 1 GB memory ($0.000/hr). Further instances are available from $0.021/hr. Note — discovered 2026-04-12: Free tier memory reduced from 1 GB to 512 MB Source ↗
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://surrealdb.com/, where it says: “SurrealDB is a database and an agent memory layer. Documents, graphs, vectors, and SQL in one engine - and context for your AI agents wherever your data lives.”. How we use this
Postgres for multi-tenant apps — 1 GB storage, 50M serverless query tokens, 500 max connections. Unlimited databases and tenant DBs. Always-on (no cold starts) Best for unlimited usage needs. When we last read the page we cite for this offer, on 2026-09-21, we refused the change we considered recording because it named no figure that had moved, and refusing a change is not a confirmation of the terms above, so we cannot confirm these terms today.
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://www.thenile.dev/, where it says: “Postgres re-engineered for multi-tenant apps.”. How we use this
Open-source backend with Postgres and Hasura GraphQL, plus Auth, Storage and Functions. The Starter plan is $0 a month: 1 GB database, 1 GB storage and 5 GB egress, with functions, realtime APIs and unlimited users. It is limited to 1 project, and the project is paused after 1 week of inactivity. Pro starts at $25 a month with $15 of compute credits, a 10 GB database, 50 GB storage and 50 GB egress. Best for unlimited usage needs.
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://nhost.io/, where it says: “Nhost is a managed backend platform with Postgres, GraphQL, Auth, Storage, and serverless Functions.”. How we use this
SQLite at the edge — 5M rows read/day, 100K rows written/day, 5 GB total storage. Resets daily at midnight UTC
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://developers.cloudflare.com/d1/, where it says: “Build serverless SQL databases on Cloudflare”. How we use this
Distributed SQL database for time-series and IoT — free cloud tier (CRFREE): 2 vCPUs, 2 GB RAM, 8 GB storage. One free cluster per org. No credit card required
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://cratedb.com/, where it says: “CrateDB is the operational analytics database for fast-moving data. Ingest millions of events per second and query billions of records in milliseconds. Standard SQL, no pre-aggregation, no schema redesign.”. How we use this
Aurora PostgreSQL Serverless on AWS Free Tier — managed PostgreSQL-compatible database with automatic scaling. Free plan: up to 4 ACUs and 1 GiB of storage per cluster, paid from AWS credits ($100 at sign-up, up to $100 more). The Free plan closes after 6 months or when the credits run out
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://aws.amazon.com/rds/aurora/, where it says: “Amazon Aurora is a global-scale relational database service built for the cloud with full MySQL and PostgreSQL compatibility.”. How we use this
Distributed SQL database. No free plan for new deployments since 2026-09-15, when CockroachDB moved new clusters to Cockroach Continuum pricing. New Cloud organizations get a 30-day free trial with $400 in credit; Standard is $0.092 per vCPU-hour. Clusters created before 2026-09-15 stay on their existing plans during their current term. Note — 2026-09-15: CockroachDB stopped offering its free Basic plan (50 million RUs and 10 GiB of storage free per month) to new deployments on 2026-09-15, when it moved new clusters to Cockroach Continuum pricing. New Cloud organizations now get a 30-day free trial with $400 in credit. Clusters created before 2026-09-15 stay on their existing plans during their current term. Source ↗
Listed in Databases, and on this page because we labelled it relational. We read that on 2026-08-31 from https://www.cockroachlabs.com/, where it says: “CockroachDB is a cloud-agnostic, AI-native, PostgreSQL-compatible data platform built for modern applications.”. How we use this
| Vendor | Free Tier | Key Limits | Durability | Read / catalogue date |
|---|---|---|---|---|
| Neon | Free | Serverless Postgres with branching — free tier includes 100 CU-hours/month per project, 1 GB of Postgres storage per pro... | watch effective 2026-10-01 |
2026-10-03 |
| Aiven | Free | Managed PostgreSQL, MySQL, or Valkey (Redis-compatible) — 1 CPU, 1 GB RAM, 1 GB disk per service. No time limit read found the page different · 2026-10-06 |
stable | 2026-10-06 / 2026-09-13 |
| Turso | Free | Edge SQLite — 100 databases, 5 GB storage, 500M rows read/month, 10M rows written/month free | stable | 2026-10-06 |
| filess.io | Free | filess.io is a platform where you can create two databases with up to 10 MB per database of the following DBMS for free:... | stable | 2026-10-04 |
| Xata | Free | Open-source Postgres platform (Apache 2.0) with copy-on-write branching and scale-to-zero. Self-hosted on Kubernetes — f... | stable | 2026-10-08 / 2026-08-22 |
| Supabase | Free | Postgres development platform: database, Auth, Storage, Realtime and Edge Functions. The Free plan is $0: unlimited API ... read found the page different · 2026-10-04 |
stable | 2026-10-04 / 2026-08-17 |
| SurrealDB Cloud | Free | Multi-model cloud database — The 'Start' plan offers 1GB of storage free, forever, and a free compute instance with 0.25... | watch discovered 2026-04-12 · effective date unknown |
2026-10-04 / 2026-09-08 |
| Nile | Free | Postgres for multi-tenant apps — 1 GB storage, 50M serverless query tokens, 500 max connections. Unlimited databases and... | not published no difference measured · 2026-09-21 |
2026-09-21 / 2026-08-23 |
| Nhost | Free | Open-source backend with Postgres and Hasura GraphQL, plus Auth, Storage and Functions. The Starter plan is $0 a month: ... read found the page different · 2026-09-24 |
stable | 2026-09-24 / 2026-08-25 |
| Cloudflare D1 | Free | SQLite at the edge — 5M rows read/day, 100K rows written/day, 5 GB total storage. Resets daily at midnight UTC | stable | 2026-10-03 |
| CrateDB | Free (CRFREE) | Distributed SQL database for time-series and IoT — free cloud tier (CRFREE): 2 vCPUs, 2 GB RAM, 8 GB storage. One free c... | stable | 2026-09-30 |
| Amazon Aurora PostgreSQL | Free Tier | Aurora PostgreSQL Serverless on AWS Free Tier — managed PostgreSQL-compatible database with automatic scaling. Free plan... | improving effective 2026-03-25 |
2026-09-20 |
We publish no ranking of these. Nothing we record measures popularity or generosity, so naming a best or a top few would be our preference rather than our data. We hold 12 free relational databases offers that clear our bar, each listed with the terms we publish and the date we last read them. Our ranking rule is published at /criteria.
12 offers meet our criteria on this page. Of those, 8 carry no recorded change to the terms we publish, 2 a recorded narrowing, 1 a recorded widening, and we publish no durability signal for 1. The Durability column below says which offer is in which group, and links the dated record behind every change. We withhold the class where the pricing page does not resolve or states no amount, tier or rate we can read, where we refused the last read, where the listing is gated, or where a narrowing in our records cites no source or no archived copy of the vendor's page has confirmed it. We do not rank these by how much you get, because the limits are not comparable without reading each vendor's page.
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