Supabase is an open source Firebase alternative. Start your project with a Postgres database, Authentication, instant APIs, Edge Functions, Realtime subscriptions, and Storage.

Supabase

There is an error on the page : https://supabase.com/docs/learn/auth-deep-dive/auth-row-level-security

The policy:
```sql
CREATE POLICY anon_read_leaderboard ON leaderboard
    FOR SELECT
    TO 'anon'
    USING (true);
```
Should be:
```sql
CREATE POLICY anon_read_leaderboard ON leaderboard
    FOR SELECT
    TO anon
    USING (true);
```