CLOUD ALTERNATIVES
Best Open-Source Alternatives to Supabase (2026)
Looking for open-source BaaS, self-hosted backends, or serverless Postgres engines to replace or complement Supabase?
Architectural Summary & Key Differentiators
Supabase combines PostgreSQL with Row-Level Security, Auth, Realtime, and Edge Functions. Depending on your architecture, PocketBase provides a lightweight single-binary SQLite backend, Appwrite delivers an all-in-one developer platform, and Neon provides hyper-scale serverless Postgres with branching.
Direct Engineering Comparison Matrix
In-Depth Breakdown of Each Alternative
CLOUD
Open source backend in 1 file with embedded SQLite.
Latest Tracked Version: v0.40.6 (Oct 23, 2026)
Average Impact: 5.1/10
Breaking Changes: 6% of releases
Tracked History: 271 releases
Recent Significant Updates:
v0.40.6
PocketBase version v0.40.6 introduces critical security updates, memory usage protections for thumbnail generation, and shifts future update distribution away from GitHub. Developers should update promptly to mitigate Go security vulnerabilities and benefit from dependency upgrades.
v0.22.57
PocketBase v0.22.57 introduces a memory-safe limit for image thumbnail generation and updates dependencies to address a security vulnerability related to the eMudhra CA compromise. These changes improve system resilience against excessive memory consumption and enhance overall security posture.
v0.40.5
PocketBase v0.40.5 delivers crucial security fixes for Go's net/http library alongside improvements to JSVM migration error handling and SQLite performance. Upgrading is strongly recommended due to potential DoS vulnerability fixes.
CLOUD
Open-source backend server for web, mobile, and flutter developers.
Latest Tracked Version: 1.9.10 (Oct 24, 2026)
Average Impact: 5.1/10
Breaking Changes: 3% of releases
Tracked History: 72 releases
Recent Significant Updates:
1.9.10
Appwrite 1.9.10. Source highlight: Appwrite 1.9.10 is a security release for self-hosted deployments on the 1.9 line. It backports the hardening shipped in 2.6.2 across auth, API keys, databases, realtime, GraphQL, storage, VCS, functions, migrations and messaging, and moves the runtime to a patched Brotli. It keeps Console 8.7.37 fo
2.6.2
Appwrite 2.6.2. Source highlight: Appwrite 2.6.2 is a security release for self-hosted deployments on the 2.6 line. It brings the hardening work merged since 2.6.1 across auth, API keys, databases, realtime, GraphQL, storage, VCS, functions, sites, migrations and messaging. It also moves the runtime to a patched Brotli and the Conso
1.9.9
Appwrite 1.9.9. Source highlight: Appwrite 1.9.9 is a precautionary maintenance release for self-hosted deployments on the 1.9 line. It moves the runtime to PHP 8.5.12. It retains Console 8.7.37 for compatibility with the 1.9 server APIs. Upgrading from 1.9.8 keeps the existing migration class and introduces no schema changes.
CLOUD
Serverless Postgres built for scale with branching and autoscaling.
Latest Tracked Version: product-6faa8ee01a (Oct 30, 2026)
Average Impact: 5.0/10
Breaking Changes: 1% of releases
Tracked History: 273 releases
Recent Significant Updates:
product-6faa8ee01a
Official Neon product update: Gemini 4 Argon, Apple and Microsoft sign-in, HIPAA for backend services, new Functions templates, and more release - Oct 30, 2026. Read the publisher’s changelog for full details.
product-25cd917884
Official Neon product update: Jev on the AI Gateway, automatic top-up for AI Gateway credits, an OAuth provider for Managed Better Auth, and more release - Oct 23, 2026. Read the publisher’s changelog for full details.
product-503c077bd3
Official Neon product update: Neon Realtime in public beta, new AI Gateway models, Stripe real-time sync, CJK search in Lakebase Search, and more release - Oct 16, 2026. Read the publisher’s changelog for full details.
CLOUD
The ultimate multi-model cloud database for modern apps.
Latest Tracked Version: v3.3.5 (Oct 29, 2026)
Average Impact: 2.4/10
Breaking Changes: 0% of releases
Tracked History: 91 releases
Recent Significant Updates:
v3.3.5
SurrealDB v3.3.5 is published, but the available notes are too limited to assess upgrade impact. Review the official source before upgrading.
v3.3.4
SurrealDB v3.3.4 is published, but the available notes are too limited to assess upgrade impact. Review the official source before upgrading.
v3.3.3
SurrealDB v3.3.3 is published, but the available notes are too limited to assess upgrade impact. Review the official source before upgrading.