Supabase Auth
Open source Firebase alternative
★ 4.7
Open source Firebase alternative with built-in authentication. 50,000 MAU free, 100,000 MAU on Pro plan with spend caps.
Features
✓ Free: 50K MAU, 500MB DB, 1GB files
✓ Pro: 100K MAU, 8GB DB, 100GB files
✓ Social OAuth providers
✓ Magic link authentication
✓ Row Level Security (RLS)
✓ Real-time subscriptions
✓ Spend caps prevent surprise bills
Pros
- + Open source and transparent
- + Best value: 100K MAU = $25 (vs $150 for 15K on Cognito)
- + Spend caps prevent overages
- + Full BaaS with DB, storage, functions
Cons
- − Free projects pause after 7 days inactive
- − Only 2 free projects allowed
- − Jack of all trades, master of none
- − Team plan ($599) required for SOC2