Category

Database

Primary data store.

14 options in this category — pick one.

PostgreSQL

The gold-standard open-source relational database.

Cost
FreeFree to self-host; hosting costs extra
Popularity
Difficulty
Medium
#open-source#self-hostable
LLM knowledge

MySQL

The classic open-source RDBMS.

Cost
Free
Popularity
Difficulty
Medium
#open-source#self-hostable
LLM knowledge

Redis

In-memory data store for caching, queues, and sessions.

Cost
$0+ / moFree self-host; Upstash ~$0.20 per 100k
Popularity
Difficulty
Medium
#realtime#open-source
LLM knowledge

Neon

Serverless Postgres with branching.

Cost
$0–$19 / moFree tier; $19+/mo Pro
Popularity
Difficulty
Easy
#serverless#low-cost
LLM knowledge

Supabase

Postgres plus auth, storage, and realtime in one platform.

Cost
$0–$25 / moFree tier; $25+/mo Pro
Popularity
Difficulty
Easy
#realtime#open-source#low-cost
LLM knowledge

MongoDB

Document database for schemaless JSON-style data.

Cost
$0+ / moAtlas free tier; $9+/mo
Popularity
Difficulty
Medium
#open-source
LLM knowledge

Firebase

Google's realtime BaaS — Firestore, Auth, Functions.

Cost
$0+ / moSpark free; Blaze pay-as-you-go
Popularity
Difficulty
Easy
#realtime#serverless#low-cost
LLM knowledge

DynamoDB

AWS's serverless key-value and document database.

Cost
$0+ / mo25GB free; usage-based
Popularity
Difficulty
Hard
#serverless#enterprise
LLM knowledge

SQL Server

Microsoft's flagship relational database.

Cost
$0+ / moDeveloper free; licensing from ~$900/core
Popularity
Difficulty
Hard
#enterprise
LLM knowledge

PlanetScale

Serverless MySQL with branching built on Vitess.

Cost
$39+ / moScaler plan $39+/mo
Popularity
Difficulty
Medium
#serverless#enterprise
LLM knowledge

Azure SQL

Managed SQL Server on Azure.

Cost
$5+ / mo$5+/mo serverless
Popularity
Difficulty
Medium
#enterprise
LLM knowledge

Cosmos DB

Azure's globally-distributed multi-model database.

Cost
$25+ / mo~$25+/mo provisioned
Popularity
Difficulty
Hard
#enterprise
LLM knowledge

Convex

Reactive backend-as-a-service with TypeScript-native queries.

Cost
$0–$25 / moFree tier; $25+/mo Pro
Popularity
Difficulty
Easy
#realtime#typescript#serverless
LLM knowledge

Turso

Edge-replicated SQLite (libSQL).

Cost
$0–$29 / moFree tier; $29+/mo Scaler
Popularity
Difficulty
Medium
#edge#low-cost
LLM knowledge
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