Compare 30+ free database hosting options — Postgres, MongoDB, Redis, SQLite, graph, vector, and time-series. Exact free tier limits for Supabase, Neon, Turso, Upstash, and more. Verified July to September 2026.

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Best Free Database Hosting for Developers

Choosing a database is one of the most consequential infrastructure decisions for any project. The good news: in 2026, there are 44 free database options across every category — relational, document, key-value, edge, graph, vector, and time-series. The bad news: free tiers vary wildly, from MongoDB Atlas's cramped 512 MB to Turso's generous 5 GB and CockroachDB's 10 GiB.

This page compares every free database in our index, organized by type, with exact limits verified against live pricing pages. Whether you need a Postgres database, a Redis cache, an edge SQLite store, or a vector database for RAG — we've got the comparison.

New: See our Database Free Tier Comparison 2026 for a focused side-by-side matrix of the top 10 databases with use-case recommendations and the PlanetScale cautionary tale.

Recent Database Pricing Changes

View all 554 pricing changes →

Looking for alternatives to a specific database? See our dedicated guides: Neon vs Supabase | Supabase vs Firebase | MongoDB Alternatives | Redis Alternatives | Firebase Alternatives

Relational SQL Databases

Postgres-based and distributed SQL. The most popular choice for web applications — structured data, ACID transactions, and mature ecosystems.

Supabase Free caution discovered 2026-09-03 restructured

Superseded: As of 2026-09-03, supabase.com/pricing reads: The free tier includes unlimited API requests, 50,000 monthly active users, 500 MB database size, 5 GB egress, 1 GB file storage. Free projects are paused after 1 week of inactivity. Paid plans include $10/mo in compute credits. We are not publishing our stored Supabase terms beside it — our own pricing change record, discovered 2026-09-03, names them as the previous ones. Read what we recorded ↓

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Neon Free stable

Serverless Postgres with branching — free tier includes 100 CU-hours/month per project, 0.5 GB storage per project, up to 100 projects, 10 branches per project, Neon Auth (60K MAU), auto-scaling up to 2 CU, scale-to-zero

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CockroachDB Basic stable

Free serverless distributed SQL — 50M Request Units + 10 GiB storage/month, scales to zero

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Aiven Free stable

Managed PostgreSQL, MySQL, or Valkey (Redis-compatible) — 1 CPU, 1 GB RAM, 1 GB disk per service. No time limit

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Xata Free caution 2026-04-19 model change

Open-source Postgres platform (Apache 2.0) with copy-on-write branching and scale-to-zero. Self-hosted on Kubernetes — free forever. Managed platform is now paid (compute + storage billed hourly); 14-day free trial with $100 credit on the commercial tier.

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Nhost Free caution discovered 2026-09-07 restricted

Open-source Firebase alternative with Postgres + Hasura GraphQL — 1 GB database, 1 GB storage, 5 GB bandwidth free

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Nile Free stable

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)

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Document & NoSQL Databases

Flexible schema, JSON-native storage. Good for rapid prototyping, content management, and applications where schema evolves frequently.

MongoDB Atlas M0 Free stable

Free 512 MB shared cluster (M0), always free, available on AWS/Azure/GCP. Includes Atlas Vector Search for AI/RAG applications

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Firebase Spark stable

Full BaaS — Auth (50K MAU), Firestore (1 GiB storage, 50K reads/day), Cloud Functions (2M invocations/month), Hosting, Analytics, Crashlytics all free

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Convex Free stable

Reactive backend — 1M function calls/month, 0.5 GB database + vector storage, 1 GB file storage, real-time sync

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Appwrite Cloud Free caution discovered 2026-09-05 reduced

Open-source BaaS — 75K MAU, 2 GB storage, 750K function executions/month, 5 GB bandwidth, 1 database, 1 bucket and 2 functions per project. Limit of 2 projects. Projects pause after 1 week of inactivity

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PocketBase Free

Open-source backend in a single Go binary — SQLite database, real-time subscriptions, built-in auth (email, OAuth2), file storage (S3-compatible), REST API. Completely free and self-hosted, no vendor lock-in. Single executable, no dependencies

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SurrealDB Cloud Free caution 2026-04-12 reduced

Multi-model cloud database — 1 GB storage, 0.25 vCPU, 512 MB memory free. Supports SQL-like queries, graph relations, document storage, real-time subscriptions. Includes team collaboration and RBAC

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Couchbase Capella Free

deploy a forever free tier fully managed database cluster with 1 node and 8GB storage, built for developers to create the next generation of applications across IoT to AI

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Key-Value & Cache

In-memory data stores for caching, session management, rate limiting, and pub/sub messaging.

Upstash Free stable

Serverless Redis — 500K commands/month (256MB data). Vector: 10K vectors free. QStash: 1,000 messages/day free

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Cloudflare KV Free stable

Key-value store at the edge — 100K reads/day, 1K writes/day, 1 GB storage. Eventually consistent with global replication

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Momento Retired

Managed Valkey cache, cluster and pub/sub, formerly a serverless cache with a free tier. No free tier. gomomento.com/pricing, read 2026-09-05, prices every plan: Momento Cache Flex from $13 per GB-month, Momento Cache Cluster from $0.0105 per instance-hour, Pub/sub Topics from $1 per 1M operations, Valkey Router $0.01 per GB of data transfer. The only $0 on the page is the Starter Basic Support plan, which is a support level and not a product allowance.

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Redis Cloud Free stable

Managed Redis — 30 MB memory, single database, shared deployment. Best-effort SLA, community support

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Edge & Embedded Databases

SQLite-based stores that run close to users — low latency, offline-capable, and lightweight.

Turso Free stable

Edge SQLite — 100 databases, 5 GB storage, 500M rows read/month, 10M rows written/month free

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Cloudflare D1 Free stable

SQLite at the edge — 5M rows read/day, 100K rows written/day, 5 GB total storage. Resets daily at midnight UTC

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DynamoDB Local Free

Official AWS DynamoDB emulator for local development and testing. Full DynamoDB API compatibility. Runs as downloadable JAR or Docker container. No AWS account needed, no network latency, no usage charges. Supports streams, transactions, TTL, and all query patterns

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Graph Databases

For interconnected data — social networks, knowledge graphs, recommendation engines, and fraud detection.

Gel Free stable

Graph-relational database (formerly EdgeDB) — free cloud tier: 1/4 compute unit (0.5 GiB RAM), 1 GB storage. Also fully open-source for self-hosting. No credit card required

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Neo4j AuraDB Free stable

Graph database cloud service — free tier: single database, up to 200,000 nodes and 400,000 relationships. Full Cypher query language support. No credit card required

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Vector Databases

Essential for AI/RAG pipelines, semantic search, and embeddings. The fastest-growing database category in 2026.

Weaviate Open Source caution discovered 2026-08-28 restructured

Open-source vector database — self-hosted free. Cloud: permanent free tier with 1 cluster, 100,000 objects, 1 GB memory, 10 GB disk, 1 collection, up to 3 tenants, 2,000 embedding requests/day and 1,000 Query Agent requests/month. Paid cloud from $45/mo (Flex)

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Zilliz Cloud Free stable

Managed Milvus vector database — free tier: 5 GB storage, 2.5M vector compute units/month, up to 5 collections. Milvus open-source also free to self-host with no limits

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LanceDB Open Source stable

Embedded vector database — OSS: fully free, runs locally or in your cloud, no limits. Cloud: $100 in one-time free credits for serverless managed offering. Usage-based pricing after credits

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Upstash Vector Free stable

Serverless vector database by Upstash — 10K vectors, 1536 dimensions, 150K query units/day free. REST API, no connection management

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Time-Series Databases

Optimized for timestamped data — IoT, monitoring, metrics, and financial data.

CrateDB Free (CRFREE) stable

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

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InfluxDB Cloud Free stable

Time-series database — free tier: 5 MB writes per 5 minutes, up to 10,000 data series, 30-day data retention. Auto-provisioned for new accounts. Ideal for IoT and monitoring workloads

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Free Tier Comparison

Top free databases compared by storage, type, and best use case.

Provider Type Free Storage Best For
Supabase Postgres 500 MB Full-stack apps (auth + storage + realtime)
Neon Postgres 0.5 GB Serverless Postgres with branching
CockroachDB Distributed SQL 10 GiB Multi-region, high availability
Turso Edge SQLite 5 GB Edge-first apps, low latency
Xata Open-source Postgres Unlimited (self-hosted) Apache 2.0 Postgres with copy-on-write branching
Cloudflare D1 Edge SQLite 5 GB Cloudflare Workers integration
MongoDB Atlas Document 512 MB Document-oriented, flexible schema
Firebase Document (BaaS) 1 GiB Mobile/web apps with real-time sync
Upstash Redis / Vector 256 MB + 10K vectors Serverless caching and messaging
Convex Reactive BaaS 0.5 GB Real-time apps, reactive queries
Aiven Managed PG/MySQL/Valkey 1 GB Managed open-source databases
Neo4j AuraDB Graph 200K nodes Knowledge graphs, relationships
PocketBase Embedded (SQLite) Unlimited (self-hosted) Single-binary backend, rapid prototyping
Weaviate Vector Unlimited (self-hosted) AI/RAG, hybrid search
InfluxDB Cloud Time-Series 30-day retention IoT, monitoring, metrics

Storage limits are for the free tier only. CockroachDB (10 GiB) offers the most generous managed storage. PocketBase, Weaviate, and Xata (post-April-2026 open-source pivot) are unlimited when self-hosted. Verified July to September 2026.

Which Free Database Should I Use?

Building a full-stack web app?
Supabase or Nhost — Postgres + auth + storage + real-time in one platform. Supabase has the larger ecosystem.
Need pure serverless Postgres?
Neon (managed, branching, scale-to-zero). Xata went open-source (Apache 2.0) in April 2026 — self-host on Kubernetes for unlimited free usage with copy-on-write branching and scale-to-zero. For max managed free storage, CockroachDB gives 10 GiB.
Building at the edge?
Turso (5 GB, 500M reads) or Cloudflare D1 (5 GB, tight Workers integration). Both use SQLite under the hood.
Need a document/NoSQL database?
Firebase Firestore (1 GiB, real-time sync) or MongoDB Atlas (512 MB, most tutorials). For self-hosted, PocketBase is unlimited.
Need caching or rate limiting?
Upstash Redis (256 MB, serverless) or Momento (5 GB transfer/month). For managed Redis, Aiven offers free Valkey.
Building AI / RAG pipelines?
Upstash Vector (10K vectors, serverless) or self-hosted Weaviate / LanceDB for no limits. Zilliz Cloud for managed Milvus.
Need a graph database?
Neo4j AuraDB (200K nodes) is the standard. Gel (formerly EdgeDB) offers a graph-relational hybrid.
Time-series / IoT data?
InfluxDB Cloud for monitoring and metrics. CrateDB for distributed SQL with time-series optimization.

Looking for more? Browse all 44 database tools in our full index of 1,547+ developer deals.

More Alternatives Guides

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