Free Supabase alternative

The backend-as-a-service space has exploded with roughly 18-25 competing tools positioning themselves as Supabase alternatives, ranging from Firebase and Appwrite to smaller players like NocoDB and Pocketbase. The core pain points are consistent: Supabase's pricing gets unpredictable at scale, their real-time features have latency issues for some use cases, and their PostgreSQL dependency feels heavy if you just need a lightweight JSON database. The real gap isn't in the feature set—it's in specificity. Most alternatives either go too minimal (Pocketbase is great but underbaked on auth), too expensive (Firebase still wins on polish but costs multiply fast), or too niche (Firebase Realtime only, no SQL flexibility). What actually matters: a new entrant should focus on one thing Supabase does poorly for a specific developer persona—either microsaas founders who need predictable pricing, mobile-first apps that need offline-first architecture, or teams locked into specific cloud providers (AWS, GCP, Azure native alternatives). Don't try to be Supabase 2.0. The market doesn't need another full-featured BaaS; it needs a focused alternative that solves one burning problem better and cheaper.