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InsForge

Free optionBrowser

Build a small app with Postgres, authentication, file storage, functions and realtime.

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What you can use it for

Build a small app with Postgres, authentication, file storage, functions and realtime.

  • 50,000 monthly active users and 100,000 edge-function calls on the advertised free plan.
  • Agent CLI/MCP access, realtime and 600 monthly site-build minutes.
Workflow coverage and comparison notes

Deploy an open-source BaaS with realtime document storage, serverless functions and client SDKs using InsForge instead of Fauna. Firebase: Small application backend with Postgres, authentication, files and functions. Requires migration from Firestore/Realtime Database: not Firebase SDK, Firestore semantics, mobile push, Google Analytics or full platform parity. Free: 500 MB database, 1 GB files, 5 GB bandwidth, 50,000 MAU and 100,000 edge calls; inactivity pauses apply. Custom compute has 120 hours/month; paid model/API usage and higher compute are separate.

Before you switch

Free is positioned for prototypes, demos and side projects; inactivity pauses projects after one week. Custom compute has 120 hours/month on the default specification, not an always-on free server. Database, authentication, storage and function limits are separate. AI gateway/model calls are not unlimited free inference: provider usage is billed separately. External email, SMS, domains and other APIs may cost extra. Pro is $25/month monthly or $20/month billed yearly; backend compute is billed separately with one $10 monthly credit per organisation, and custom compute uses a separate usage bill. Migration from Supabase requires checking SDK, authentication, functions and policies; not drop-in parity.

Alternatives to these paid apps

Each comparison covers the workflow described above, rather than every paid feature.

More for the same workflow

See alternatives →
Neon

Run a small app on managed Postgres databases with separate development branches.

Free: 100 projects, each with 1 GB storage, 100 CU-hours/month and 5 GB egress. Unlimited members; no credit card required.

Alternative to Supabase