Google Cloud PostgreSQL - Fully-managed database service
PlanetScale - The last database you'll ever need. Go from idea to IPO.
Supabase - An open source Firebase alternative
Hightouch Audiences - Use data without SQL
Slack SQL - Execute SQL queries inside of Slack
pganalyze Index Advisor for Postgres - The index advisor makes recommendations for creating the best indexes for your Postgres queries, based on the schema and table statistics information.