Quatt is a quickly growing scaleup building heat pumps to help fix climate change. They focus on creating the most accessible and smartest heat pumps on the market, with a significant impact on reducing CO2 emissions.

Quench.ai connects to internal tools, enabling teams to search, chat, and retrieve precise answers from organizational knowledge - and to automate tasks with AI. Team of 15 based out of London AI Hub. Founded by Husayn Kassai - former CEO and Co-Founder of AI unicorn Onfido. Pre-seed of $5M raised from 8 funds including Tuesday VC (formerly Crunchbase), Firstminute Capital, Sequoia Scout Fund, Northzone Scout, and over sixty founders.

New Consumer AI company, raised $6m pre-seed.

QuestDB is one of the fastest-growing time series databases. It is open source and the team is obsessed with performance, using a blend of low latency zero-GC Java, C++ and Rust for the entire distributed architecture. The company is VC funded with investors including YCombinator, and founders of Github, Docker, Supabase, Posthog, NGINX, Mesosphere, Citus Data and more.

Queueco is a proprietary trading firm operating in conventional as well as cutting-edge alternative markets. Their strategies run 24/7 without manual intervention powered by low-latency infrastructure and the latest machine learning techniques. They are a meritocratic and lean team of highly-motivated scientists and developers, valuing technical ability over politics.

QuickTrials is a leading enterprise SaaS product that is used to manage agronomic field trials around the world. We help companies to speed up agricultural innovation by making the trialing process faster and more effective.

Quidient is building a new foundational category: Generalized (5D) Scene Reconstruction (GSR). Our API-first platform turns real-world environments into measurable, queryable digital assets—powering applications across defense, infrastructure, and spatial AI.

QumisAI is the only lawyer-built AI platform transforming insurance knowledge work. Our mission is to provide the most accurate AI solutions for the insurance industry. We are already trusted by five of the 15 largest U.S. insurance brokers, leading specialty carriers, and top law firms.

We make a distributed filesystem that runs on bare metal and in the public cloud. We tackle large-scale distributed systems problems and work across the entire (user-space) stack, from REST APIs all the way to io_uring and everything in between. Building a distributed storage system from scratch will put your systems knowledge to the test.

At Quobyte, we are working on the Data Center File System (DCFS), a highly scalable and fault-tolerant software storage system built around a parallel file system core. Customers use Quobyte DCFS for ML and HPC clusters in industry and academia, k8s and OpenStack infrastructures, streaming, web mail, post production, origin and CGI clusters, and as a scalable backend for SaaS products. There are Quobyte DCFS clusters which span thousands of machines and crunch 100s of GB/s!