Databases
Managed SQL, document, key-value and serverless data. A paused project or a daily row cap is part of the free plan, so it is listed when the pricing page said so.
Databases 11
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Firebase
Spark
No-cost plan
Google's app platform, including hosting, Firestore, Auth and storage. Spark is the no-cost plan and does not need a payment method; Blaze is pay-as-you-go and still includes Spark's no-cost usage.
No payment method needed; the pricing page lists generous no-cost usage limits across products, with higher limits on Blaze
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Supabase
Free
500 MB database
Hosted Postgres with auth, storage and APIs. The Free plan is $0 a month, limited to two active projects, and free projects pause after a week of inactivity.
$0 / month; 50,000 MAU, 500 MB RAM, 5 GB egress, 1 GB file storage, 2 active projects, paused after 1 week of inactivity
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Neon
Free
100 CU-hours / project / month
Serverless Postgres (Lakebase) that can scale to zero. The Free plan is $0, with no time limit and no credit card, and each project gets its own compute and storage allowance.
$0; 100 projects, 1 GB storage per project, sizes up to 2 CU (8 GB RAM), 5 GB object storage, unlimited team members
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Turso
Free
100 databases
Managed libSQL (a SQLite fork) with a generous free plan aimed at many small databases rather than one large one.
$0 / month; 5 GB storage, 500 million rows read, 10 million rows written, 3 GB syncs, 1-day audit retention
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MongoDB Atlas
Atlas Free
512 MB storage
MongoDB's hosted data platform. The Atlas Free cluster is listed as free forever, for learning and exploring, with a small shared instance.
$0 / hour, free forever; shared RAM and shared vCPU
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Upstash Redis
Free
250 MB data
Serverless Redis with per-request billing. The Free plan is meant for prototypes and hobby projects, with caps on data, bandwidth and commands.
$0; 10 GB monthly bandwidth, 500,000 commands a month
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Cloudflare D1
Workers Free
5 million rows read / day
Serverless SQL on Cloudflare. The Workers Free plan includes a daily read and write cap and a total storage cap; hitting a daily cap stops queries until UTC midnight.
100,000 rows written / day, 5 GB total storage, 10 databases
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Cloudflare KV
Workers Free
100,000 reads / day
Globally replicated key-value storage for Workers. Daily free-plan limits reset at 00:00 UTC; going over any one of them blocks further KV calls that day.
1,000 writes, 1,000 deletes and 1,000 list requests per day; 1 GB stored; 1,000 namespaces
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Convex
Free & Starter
1 million function calls
A reactive backend with a hosted database, functions and file storage. The Free & Starter column is $0 a month for personal projects and prototypes.
$0 / month; 0.5 GB database, 1 GB file storage, 20 GB-hours of action compute included
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TiDB Cloud
TiDB Cloud Starter
25 GiB row storage
Distributed SQL (MySQL-compatible) as a managed service. Starter can start at $0 a month and includes a monthly free allowance across up to five eligible instances.
Free monthly allowance also includes 25 GiB columnar storage and 250 million request units, per organisation, across up to five eligible instances
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Couchbase Capella
Capella free tier
Small cluster (~8 GB)
Managed Couchbase. The pricing FAQ describes a free tier with credits, sample data, SQL++ and a small cluster for prototyping, with no credit card required.
Fully managed, no credit card required; the FAQ describes about one node and ~8 GB for prototyping, plus credits and sample data
Nothing matches.
Other lists
When a limit changes
A short note when we re-check the list. No other mail.