12 of these carry no recorded demerit and are indistinguishable under every signal we hold; their order rotates daily. 2 are demoted with the reason named, and 0 are listed last because they are not generally available or are not a free offer. How we rank.
Free Tier
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).
Databases
Read and confirmed 2026-10-30
Free
Edge SQLite — 100 databases, 5 GB storage, 500M rows read/month, 10M rows written/month free. On 2026-10-02 Turso announced that Supabase is acquiring it.
Databases
Read and confirmed 2026-10-30
Free
SQLite at the edge — 5M rows read/day, 100K rows written/day, 5 GB total storage. Resets daily at midnight UTC
- On the Free plan, once the account reaches its daily read or write limit, D1 refuses queries and returns errors until the limits reset at 00:00 UTC; upgrading to Workers Paid removes the limits. (From developers.cloudflare.com/d1/platform/pricing, read 2026-10-20.)
- On the Free plan a single D1 database can hold at most 500 MB, and an account can have at most 10 databases, within the 5 GB account total. (From developers.cloudflare.com/d1/platform/limits, read 2026-10-20.)
- Cloudflare D1's free plan needs no credit card. (From cloudflare.com/developer-platform/products/d1, read 2026-10-22.)
- D1 usage past Free limits requires the Workers Paid plan. That plan has a minimum charge of $5 per month per account. (From developers.cloudflare.com/workers/platform/pricing, read 2026-10-29.)
- The Workers Paid plan includes 25 billion rows read, 50 million rows written, and 5 GB storage monthly. Rows read overage is $0.001 per million. Rows written overage is $1.00 per million. Storage overage is $0.75 per GB-mo. There are no egress charges. (From developers.cloudflare.com/d1/platform/pricing, read 2026-10-29.)
- Time Travel restores a database from up to 30 days ago on Workers Paid and 7 days on Free. The paid plan has a 10 GB maximum database size and 1 TB storage per account. (From developers.cloudflare.com/d1/platform/limits, read 2026-10-29.)
Databases
Read and confirmed 2026-10-26
Free
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), 5 GB of public network transfer per project per month, up to 100 projects, 10 branches per project, Neon Auth (60K MAU), auto-scaling up to…
Databases
Read and confirmed 2026-10-28
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: MySQL, MariaDB, MongoDB, and PostgreSQL.
Databases
Read and confirmed 2026-10-29
Free
Managed PostgreSQL, MySQL, Valkey (Redis-compatible), Apache Kafka, or OpenSearch — one free service of each type per organization. PostgreSQL and MySQL: 1 CPU, 1 GB RAM, 1 GB disk; PostgreSQL has 20 connections and no connection pooling.
Databases
Read 2026-10-30 · confirmed 2026-09-13
Free
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…
Databases
Read and confirmed 2026-11-02
Free
Postgres for multi-tenant apps — 1 GB storage, 50M serverless query tokens, 500 max connections. Unlimited databases and tenant DBs.
Databases
Read and confirmed 2026-11-05
Always Free
Always Free: 1 TiB queries/month, 10 GiB storage. Serverless data warehouse with SQL, ML, and BI built in.
Databases
Read 2026-10-29 · catalogue date 2026-08-17
Free
Open-source Postgres platform (Apache 2.0) with copy-on-write branching and scale-to-zero. Self-hosted on Kubernetes — free forever.
Databases
Read and confirmed 2026-11-02
Free
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.
Databases
Read and confirmed 2026-10-28
Free
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.
Databases
Read and confirmed 2026-11-03
Open Source
Embedded vector database — OSS: fully free, runs locally or in your cloud, no limits. LanceDB Cloud is closed to new accounts: its sign-up page says "Sign ups are currently disabled" (read 2026-10-14), and lancedb.com/pricing redirects to a contact form, so the one-time $100 Cloud credit is no…
Databases
Read 2026-11-08 · catalogue date 2026-10-14
−1 stale_verification We cannot confirm this offer: 1 consecutive re-check attempt has failed (most recently 2026-11-08 — The pricing page text is truncated and consists mostly of cookie consent, blog post listings, and marketing content. It does not contain any pricing tiers, plan details, free-tier terms, or Cloud sign-up status information needed to verify the stored deal info about LanceDB's Open Source tier, Cloud credit, or Enterprise sales.), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor.
Trial
Distributed SQL database. No free plan for new deployments since 2026-09-15, when CockroachDB moved new clusters to Cockroach Continuum pricing.
Databases
Read 2026-10-24 · confirmed 2026-09-02
−3 free_tier_withdrawn Recorded free tier removal on 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: https://www.cockroachlabs.com/cockroachdb/pricing/
−2 time_limited_offer Tier "Trial" is a trial that expires, not an ongoing free tier.