Supabase
Open source Firebase alternative with Postgres database, auth, storage, edge functions, and realtime
Apache-2.0 · 99.8k stars · Backend-as-a-Service

Open source backend platform with auth, databases, storage, functions, and messaging
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Appwrite can be used as an alternative to these commercial products.
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Appwrite vs PocketBase 2026: compare self-hosted BaaS on features, SDK support, database, functions, and resource requirements to pick the right backend.
Supabase vs Appwrite: compare open source Firebase alternatives on PostgreSQL power, SDK breadth, serverless functions, and self-hosting setup. March 2026.
Supabase, Appwrite, PocketBase, and Directus vs Firebase: compare open source backend-as-a-service platforms on database, auth, storage, and cost. March 2026.
SaaS to self-hosted, step-by-step — one PDF.
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