Listed alphabetically. A tool is ranked by its reviews once it has 3.
| Tool | Reviews | Lowest paid plan | Free plan | Free trial | Public API | Runs on | Main features |
|---|---|---|---|---|---|---|---|
 AivenYour AI-ready open source data platform | ReviewsNone yetWrite one for Aiven | Lowest paid plan$5per month, for PostgreSQLDeveloper, as of October 23, 2026 | Free planYes | Free trial30 days | Public APIYes | Runs onCLI | Main features
|
 AppwriteAn open-source developer platform with Auth, Databases, Storage, Functions, Messaging, and Sites. | ReviewsNone yetWrite one for Appwrite | Lowest paid planSee plans | Free planYes | Free trialNot confirmed | Public APINot confirmed | Runs onNot confirmed | Main features
|
 ConvexThe reactive backend platform that keeps up with you and your agents | ReviewsNone yetWrite one for Convex | Lowest paid plan$25per developer per monthProfessional, as of October 20, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | Runs onCLI | Main features
|
 MongoDB AtlasCloud document database with built-in resilience, scalability and enterprise-grade security | ReviewsNone yetWrite one for MongoDB Atlas | Lowest paid plan$0.08per hour for M10, from $56.94 per monthDedicated, as of October 19, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | Runs onCLI | Main features
|
 MotherDuckFast, serverless analytics powered by DuckDB with dedicated compute for every user and every agent. | ReviewsNone yetWrite one for MotherDuck | Lowest paid plan$250per org per month plus usageBusiness, as of October 28, 2026 | Free planYes | Free trial7 days | Public APINot confirmed | Runs onNot confirmed | Main features
|
 NeonThe backend for apps and agents: serverless, branchable Postgres with auth, functions and storage | ReviewsNone yetWrite one for Neon | Lowest paid planSee plans | Free planYes | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | Main features
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| PineconePinecone is a fully managed vector database built for AI. | ReviewsNone yetWrite one for Pinecone | Lowest paid plan$20per month, flatBuilder, as of October 28, 2026 | Free planYes | Free trial3 weeks | Public APIYes | Runs onTerminal | Main features
|
 Redis CloudFully-managed Redis with faster commands, more data structures, and real-time performance at scale. | ReviewsNone yetWrite one for Redis Cloud | Lowest paid planSee plans | Free planYes | Free trialNot confirmed | Public APINot confirmed | Runs onAWS, Azure, GCP | Main features
|
 SingleStoreThe real-time database for AI, apps and analytics. | ReviewsNone yetWrite one for SingleStore | Lowest paid planSee plans | Free planYes | Free trialYes | Public APIYes | Runs onAzure, Google Cloud | Main features
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 SupabasePostgres development platform with auth, instant APIs, realtime, functions, storage and vectors | ReviewsNone yetWrite one for Supabase | Lowest paid plan$25per month, plus compute and usagePro, as of October 14, 2026 | Free planYes | Free trialNot confirmed | Public APINot confirmed | Runs onWeb, CLI | Main features
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 TursoSQLite-based database architecture for a database per user, agent and tenant | ReviewsNone yetWrite one for Turso | Lowest paid planSee plans | Free planYes | Free trialNot confirmed | Public APIYes | Runs onCLI | Main features
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 UpstashServerless data platform, one platform for all your data needs | ReviewsNone yetWrite one for Upstash | Lowest paid plan$0.2per 100K commandsPay as You Go, as of October 20, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | Runs onCLI | Main features
|
From each tool's own website. “Not confirmed” means we couldn't confirm it there, not that the tool doesn't have it. Each tool's page says when its facts were checked.
How this list is made
A tool is listed here only when we've confirmed on its own website that it has a free plan. Tools we couldn't confirm it for are left out, even if they may have it. Vendors can't pay for a place on this list. Add a tool we missed