Side-by-side comparison of AI visibility scores, market position, and capabilities
London YC W20 fastest-growing open-source time-series database with 15K+ GitHub stars; $14.4M total ($12M Series A Nov 2021) with SIMD vector SQL serving investment banks and hedge funds competing with InfluxDB for high-frequency time-series.
QuestDB is a London, United Kingdom-based open-source time-series database — backed by Y Combinator (W20) with $14.4-18 million in total funding including a $12 million Series A in November 2021 from Intel Ignite, Approx.vc, New Forge, and 468 Capital — providing financial services companies, IoT operators, and data infrastructure teams with the fastest time-series database globally (as measured by DB-Engines growth ranking), achieving 15,000+ GitHub stars through column-oriented storage, parallelized vector execution, SIMD CPU instructions, and low-latency SQL queries that enable blazingly fast ingestion and analysis of time-stamped data. Founded in 2019, QuestDB serves Tier 1/2 investment banks, leading hedge funds, national stock exchanges, and major crypto firms where microsecond-level query performance on time-series data is operationally critical.
20M+ users; deployed in 90% of Fortune 100; $2B+ ARR. GitHub Copilot Workspace enables repo-level AI agents. Most-used AI coding tool by total user count; backed by Microsoft's enterprise distribution.
GitHub Copilot is an AI-powered coding assistant developed by GitHub (Microsoft) in partnership with OpenAI, providing real-time code suggestions, function completions, documentation generation, and whole-file generation directly within developers' code editors. Launched in technical preview in 2021 and generally available since 2022, GitHub Copilot has grown to over 1.3 million paid subscribers and has become the most widely adopted AI coding assistant, fundamentally changing how software developers write code.
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