Side-by-side comparison of AI visibility scores, market position, and capabilities
Programming education platform for engineers building Redis, Git, and SQLite from scratch to understand fundamentals; $2.3M from Mike Krieger and Arash Ferdowsi backed by GitHub, Stripe, Apple engineers.
CodeCrafters is a Concord, California-based programming education platform where experienced software engineers build real-world developer tools from scratch — creating Redis, Git, SQLite, HTTP servers, BitTorrent clients, and other foundational software components to deeply understand how these systems work rather than just learning to use them. Founded in 2022 and backed by $2.3 million in seed funding from notable angel investors including Instagram co-founder Mike Krieger and Dropbox co-founder Arash Ferdowsi, CodeCrafters is used by engineers at GitHub, Stripe, Microsoft, Apple, and NVIDIA.
SF open-source A/B testing and feature flagging running statistical analysis on existing data warehouses; YC W22 $5M revenue 2024 warehouse-native competing with LaunchDarkly and Statsig for developer experimentation infrastructure.
GrowthBook is a San Francisco-based open-source feature flagging and A/B testing platform — backed by Y Combinator (W22) — providing engineering teams and product managers with a self-hostable, warehouse-native experimentation system that connects directly to Snowflake, BigQuery, Redshift, Databricks, and Postgres data warehouses to run A/B tests against existing event data without requiring a separate third-party analytics SDK or data pipeline. Founded in 2020 and generating $5 million in revenue in 2024 with a 21-person team, GrowthBook operates under an open-core model (MIT license for the core platform, paid GrowthBook Cloud for the managed option) that has built a developer-first community and significant self-hosted installed base.
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