Databases

Cloudflare · Workers Free

Serverless SQLite on the Workers Free plan: up to 10 databases of 500 MB each (5 GB per account), 5 million rows read and 100,000 rows written per day.

• 5 GBstorage
• 5Mrows read / day
• 100Krows written / day

• Can't bill you
• No card

Firebase · Spark

No-cost Firebase plan with a Cloud Firestore database (1 GiB, 50,000 reads and 20,000 writes a day), Authentication and Hosting (10 GB storage, 10 GB transfer a month); Cloud Storage now needs Blaze. Realtime Database adds 100 simultaneous connections, 1 GB stored and 10 GB downloaded a month.

• 1 GBFirestore stored data
• 10 GBHosting storage
• 1 GBRealtime Database stored data

• Can't bill you
• No card

Neon · Free

Up to 100 serverless Postgres projects, each with 1 GB of storage (20 GB in total), 100 CU-hours of compute and 5 GB of egress per month.

• 1 GBstorage
• 100 hCU-hours / month
• 5 GBegress / month

• Can't bill you
• No card

Prisma · Free

Managed Postgres billed by operations: 200,000 operations a month, 2 GB of storage and up to 50 databases; queries stop at the monthly limit.

• 2 GBstorage
• 50databases
• 200Koperations / month

• Commercial use restricted
• Can't bill you
• No card

Turso · Free

Up to 100 SQLite-compatible databases with 5 GB of storage, 500 million rows read and 10 million rows written per month; queries fail once a quota is exceeded.

• 5 GBstorage
• 500Mrows read / month
• 10Mrows written / month

• Can't bill you
• No card

Aiven · Free

A single-node managed PostgreSQL or MySQL service on a dedicated VM with 1 GB of storage, 1 GB of RAM and 1 CPU, with no time limit; idle services may be powered off, and are deleted after 180 days off.

• 1 GBstorage
• 1 GBmemory
• 1vCPU

• Deletes after 180 idle days
• Commercial use
• Can't bill you
• No card

Convex · Free

Reactive document database and functions with 0.5 GB of database storage, 1 million function calls and 20 GB-hours of action compute a month, under hard caps per team.

• 0.5 GBstorage
• 1 GBdatabase I/O / month
• 1Mfunction calls / month

• Can't bill you

PingCAP (TiDB Cloud) · Starter

Up to five free MySQL-compatible TiDB Cloud Starter instances per organization, each with 5 GiB of row storage, 5 GiB of columnar storage and 50 million Request Units a month.

• 5 GBstorage
• 5free Starter instances
• 50MRequest Units (RUs) / month

• Can't bill you
• No card

Oracle Cloud · Always Free

One standalone MySQL HeatWave DB system per tenancy in the home region, on the MySQL.Free shape (2 ECPUs, 8 GB memory) with fixed 50 GB storage, 50 GB of backup storage and an optional one-node HeatWave cluster; no SLA or Oracle Support.

• 50 GBdatabase storage
• 50 GBbackup storage
• 1Always Free DB systems

• Can't bill you
• Card required

MongoDB Atlas · Free

One shared MongoDB cluster per project with 512 MB of storage, 100 operations per second and 3 search or vector indexes; inactive clusters pause after 30 days.

• 0.5 GBstorage
• 100operations / second
• 500connections at once

• Can't bill you
• Pauses after 30 idle days

Supabase · Free

Up to two active projects, each with a 500 MB Postgres database, plus 50,000 auth MAU, 1 GB file storage and 500,000 Edge Function invocations; idle projects pause after a week. Realtime adds 200 concurrent connections and 2 million messages a month.

• 500 MBdatabase size
• 1 GBfile storage
• 50Kmonthly active users

• Can't bill you
• Pauses after 7 idle days

Microsoft Azure · Free tier

One Cosmos DB account per subscription gets the first 1,000 RU/s of provisioned throughput and 25 GB of storage free for its lifetime; usage above that is billed.

• 25 GBstorage
• 1Kprovisioned throughput (RU/s) / second

• Commercial use
• Card required

Couchbase · Free Tier

One single-node Capella operational cluster per organization on AWS, Google Cloud or Azure (three regions each), running the Data, Query, Index and Search services with 8 GB of data storage on Google Cloud or 10 GB on AWS and Azure, plus an optional App Service for mobile sync. It turns off after 72 hours without activity and is deleted after 30 days.

• 8 GBstorage

• Deletes after 30 idle days
• Commercial use restricted
• Can't bill you
• Pauses after 3 idle days
• No card

Appwrite · Free

Up to two projects sharing 75,000 auth MAU, 2 GB file storage, 5 GB bandwidth and 500,000 database reads a month; idle projects pause after a week and are deleted after 90 days paused.

• 2 GBstorage
• 75Kmonthly active users
• 5 GBbandwidth / month

• Deletes after 90 idle days
• Can't bill you
• Pauses after 7 idle days

SQLite Cloud · Free

Each Free SQLite Cloud project gets 1 CPU, 256 MB of RAM, 512 MB of storage, 20 connections and 500,000 Edge Function invocations a month, without snapshots; it is aimed at prototypes and demos, and Free projects inactive for 3 months are deleted.

• 512 MBstorage
• 256 MBmemory
• 1vCPU

• Deletes after 104 idle days

Oracle Cloud · Always Free

Two Always Free Autonomous AI Databases per tenancy, with a JSON workload type, 20 GB of storage each and 30 sessions; databases stop after 7 idle days and may be deleted after 90.

• 20 GBstorage
• 2databases
• 30database sessions at once

• Deletes after 90 idle days
• Can't bill you
• Pauses after 7 idle days
• Card required

Amazon Web Services · Always Free

25 GB of DynamoDB storage plus 25 read and 25 write capacity units per Region each month, free on both AWS plans; on the Paid plan, usage above the allowance is billed.

• 25 GBstorage
• 25read capacity units (RCU) / second
• 25write capacity units (WCU) / second

• Bills overage

Koyeb · Free instance

One free serverless Postgres database per organization with 0.25 vCPU, 1 GB RAM, 1 GB of storage and 5 hours of active compute a month. Koyeb is retiring its $0 Starter plan: new sign-ups must subscribe to Pro ($29 a month) or above.

• 1 GBstorage
• 5 hcompute / month
• 1databases

• Card required

Render · Free

One free Postgres database per workspace with 1 GB of storage that expires 30 days after creation and is deleted after a further 14-day grace period.

• 1 GBstorage
• 1databases
• 5 GBegress / month

• Deletes after 44 days
• Commercial use restricted
• Stops at the limit

Tencent Cloud · 免费体验版

One free CloudBase environment per account for development and testing: 3,000 resource points a month (about ¥3 of usage) shared by the document database, cloud functions (fixed 3 s timeout and 256 MB), cloud storage and CDN, static hosting and auth. It is valid for 6 months and can be renewed 6 months at a time; it has no custom domain and stops when the points run out.

• 2.5 GBdocument database storage
• 25 GBcloud storage (standard)
• 25 GBstatic hosting storage

• Deletes after 195 days
• Commercial use restricted
• Stops at the limit
• No card
• Works in China

Microsoft Azure · 12 months free services

New Azure customers get 750 hours a month of a Burstable B1MS Azure Database for MySQL Flexible Server (1 vCore, 2 GiB of memory), plus 32 GB of storage and 32 GB of backup storage, free for 12 months from sign-up; that is enough to run one server continuously. A free account must move to pay-as-you-go within 30 days to keep the free amounts, and usage beyond them is billed.

• 32 GBdatabase storage
• 32 GBbackup storage
• 750 hBurstable B1MS server hours / month

• Commercial use
• Bills overage
• Card required

Microsoft Azure · 12 months free services

New Azure customers get 750 hours a month of a Burstable B1MS Azure Database for PostgreSQL Flexible Server (1 vCore, 2 GiB of memory), plus 32 GB of storage and 32 GB of backup storage, free for 12 months from sign-up; enough to run one small server continuously. A free account must move to pay-as-you-go within 30 days to keep the free amounts, and usage beyond them is billed.

• 32 GBdatabase storage
• 32 GBbackup storage
• 750 hBurstable B1MS server hours / month

• Commercial use
• Bills overage
• Card required