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23blocks

Freemium#15 of 28 in Backend as a ServiceBackend as a Service (BaaS) Software

23blocks: A modular backend for teams that want APIs, enterprise auth, PostgreSQL, and self-hosting. Ranked #15 of 28 in Backend as a Service by our editors (6.1/10); pricing: Free plan · paid from $29.99/mo; best for modular enterprise-style backend builders.

6.1/10Editor score
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At a glance

  • Editor score
    6.1 / 10
  • Pricing
    Free plan · paid from $29.99/mo
  • Best for
    Modular enterprise-style backend builders
  • Free plan
    Yes
  • Paid from
    $29.99/mo
  • Database type
    Relational
  • Facts checked
    21 Sep 2026
23blocks screenshot

  • Where it wins

    • REST, OpenAPI, SDK support, and self-hosted deployment recipes
    • Enterprise authentication with MFA, SSO, API keys, and passwordless login
    • PostgreSQL, storage, forms, CRM, subscriptions, and realtime features

  • Where it doesn't

    • Per-block pricing can become expensive as capabilities accumulate
    • Verified integrations are limited
    • The modular approach may require more architectural decisions

Our verdict on 23blocks

23blocks is a Backend as a Service platform built around production-ready API blocks for application backends. It is aimed at indie developers, startups, agencies, and enterprises creating SaaS applications, mobile backends, MVPs, and client projects. The product combines RESTful APIs, OpenAPI specifications, SDK support, managed cloud deployment, and self-hosted deployment options. Its scope covers authentication, file storage, forms, CRM, content, commerce, search, subscriptions, payment processing, and realtime functionality.

Pricing is structured around a free shared-cloud tier and paid blocks. The Shared Cloud Free Tier costs $0 per month and includes Shared Cloud with no platform fee. Paid pricing starts at $29.99 per block per month, with Onboarding listed at that amount for user journeys and activation flows. Auth is listed at $39.99 per block per month for authentication, users, MFA, and SSO. CRM and Files are each listed at $69.99 per block per month, covering contacts and relationships, or cloud storage and CDN delivery. The model suits teams that want to select backend capabilities individually, but a broader implementation can require several recurring block charges.

Its strongest technical fit is for builders who want a relational backend without giving up deployment choice. 23blocks uses isolated multi-tenant PostgreSQL databases with automated backups, supports cloud file uploads, transformations, and CDN delivery, and provides realtime communication through WebSockets and WebRTC. Authentication includes passwords, MFA, SSO, API keys, and passwordless login, while the category details specify support for 1,000 free authentication users. The platform is also fully open source as of July 31, 2026. Choose 23blocks if modular APIs, enterprise-style authentication, and self-hosting matter more than a broad integration marketplace. Teams seeking a simpler all-in-one pricing model or wider verified integrations should consider an alternative.

23blocks pricing

Plans Free plan · paid from $29.99/moFreemium A usable free plan; paid tiers unlock the limits above. Prices re-checked Sep 2026.
See plans on 23blocks.com

All 7 23blocks plans and prices →

23blocks fact sheet

Free planYes
Paid from$29.99/mo
Database typeRelational
Authentication methodsEnterprise
Serverless functionsNot verified
Realtime dataYes
File storageYes
Automatic APIsNot verified
Free authentication users1000 users
DeploymentCloud, Self-hosted
SupportEmail, Phone, Tickets, Community, Docs · 24/7
Built forSolo, Small business, Mid-market, Enterprise (editorial estimate)
PricingFree plan · paid from $29.99/mo (source)
Website23blocks.com
Facts checked21 Sep 2026

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Featured on iTechGuides — 23blocks 6.1/10

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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

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