Carlo Badini

Claude powers some of the most nuanced and context-aware conversations in FirstQuadrant. A foundational model that we deeply rely on.

TanStack beats all React state managers for complex frontend data workflows powered by an API. It's our React data backbone for Linear-fast optimistic updates and persisted caching.

It's simple: if something breaks, Sentry tells us before our users do. Nothing else has saved us more engineering hours, especially with the new Seer AI features.

We tried half a dozen analytics tools before landing here. PostHog gives us product insights, session replays, and feature flags in one stack with a generous free tier.

We use Supabase as our managed Postgres because it is fast, reliable, and gets out of the way. No vendor lock-in, no hidden limits, scales with us.

Mintlify makes it effortless to create beautiful, clear, and well-structured documentation. Our users love it, and so do we.

We also hosted our own Redis-based queue before managing events infra became a job in itself. Inngest has top tier local dev DX and helps our background jobs scale infinitely.

We tried building email sync in-house. Never again. Nylas handles the messy parts of email and calendar integrations so we can focus on AI.

We’ve tested many APIs for enriching contact and company data and Perplexity has by far the best online AI search. Crucial for high-quality enrichment.

Gemini brings another layer of intelligence to FirstQuadrant. Its unique capabilities expand the boundaries of what our AI can do.

FirstQuadrant wouldn’t be possible without OpenAI models like GPT 4.1 and o3. It's the backbone of many of our AI-driven automations and reasoning flows.

We’ve tried most design tools... Figma is still the GOAT. Nothing else comes close when it comes to speed, collaboration, and polish.

By far the easiest way to track issues and progress when working on a product. It keeps our entire team aligned without friction.