Supabase

Evervault is the first encryption platform, allowing developers to encrypt, process, and share sensitive data. Full payments stack control, minimal PCI compliance burden.

Automated code review, improvement, and refactoring

Aiven is the trusted open source data platform for production AI. On Aiven, developers do what they do best: create AI and agentic products and applications. Meanwhile, Aiven does what we do best: manage the underlying data infrastructure. It includes a suite of managed open source data services that lets your team deploy and run databases, streaming pipelines, search engines, and analytics services, across any cloud provider of your choice. You pick the services you need (PostgreSQL, Apache Kafka, ClickHouse, OpenSearch, DataHub, and others), choose a cloud provider and region, and Aiven has them running in minutes. From that point on, Aiven handles backups, security patches, version upgrades, and scaling automatically. Your developers connect to the service the same way they would to any standard open source tool, because it is one. Aiven also includes a governance and knowledge layer that gives developers, engineers, and AI agents the context they need to find, understand, and trust their data and a runtime environment where teams can deploy applications and agents alongside Aiven operational data.

What’s Beefree SDK? Beefree SDK enables developers to seamlessly embed a top-tier drag-and-drop visual content builder for emails, landing pages, and pop-ups into their applications, providing customizable, user-friendly design tools for creating emails, landing pages, and pop-ups—trusted by over 600 SaaS brands to enhance content creation.

We're thrilled to partner with Zapier and offer portfolio companies a $500 credit to explore Zapier. This credit covers approximately four months on Zapier’s Teams plan, allowing members to build powerful AI workflows and automations to streamline their work. Already a Zapier customer? Even better, the same credit applies!

Aircall is the customer communications platform for growing businesses: a modern business phone system, omnichannel messaging, and AI Virtual Agents that resolve routine calls and messages end to end, all in one Unified Platform. Built-in AI keeps your team focused on the conversations that matter. Builtfirst members get 15% off Aircall through this Perk. Startups can also apply to the Aircall StartUp program for deeper first-year savings (see Additional details). What your team gets: Always-on availability: AI Virtual Agents answer, qualify, and route every call and message, including after hours, and hand off to your reps with full context. Real-time coaching: AI Assistants transcribe live calls, surface talk tracks, and write call summaries with action items, so new reps ramp faster. Shared customer context: calls, texts, and history sync to your CRM or helpdesk through 250+ native integrations, with automatic logging. Intelligent routing and a shared inbox: route by availability and skills, and collaborate on every conversation in one workspace. Analytics: see volume, response times, and rep performance in real time. Trusted by 24,000+ businesses. SOC 2 Type II, GDPR-aligned, 99.95% uptime SLA. Too Good To Go doubled calls per person per day and lifted conversions 10-15% across 17 countries.

Tavily gives VC-backed startups building AI agents up to 100,000 API credits for 6 months; anyone can use its free plan of 1,000 credits a month.