Bloom alternatives

TL;DR: The closest YC-backed alternatives to <strong>Bloom</strong> are other Y Combinator B2B companies, especially from the Spring 2025 batch. Below are 20 ranked competitors with batch, status, and team size.

Y Combinator-backed B2B companies similar to Bloom (YC Spring 2025).

Last verified:

  • Propolis YC Spring 2025 · Acquired · 2 people — Hands off QA via intelligent browser agents.
  • BitPatrol YC Spring 2025 · Acquired · 1 people — AI-powered code security
  • throxy YC Spring 2025 · Active · 55 people — Vertical AI agents running B2B outbound on autopilot, with human SDRs
  • Auctor YC Spring 2025 · Active · 30 people — The agentic operating system for modern system integrators.
  • Ticket Wallet YC Spring 2025 · Active · 20 people — AI-optimized ticket resale
  • Sixtyfour YC Spring 2025 · Active · 12 people — Intelligence Infrastructure on People and Entities
  • Bluejay YC Spring 2025 · Active · 10 people — Test, monitor, and improve your voice and chat AI agents
  • Casco YC Spring 2025 · Active · 10 people — Autonomous security testing for web apps, APIs, cloud, and AI systems
  • Godela YC Spring 2025 · Active · 10 people — AI Physics Engine to replace simulations and prototypes
  • QualGent YC Spring 2025 · Active · 10 people — AI Mobile App Quality Assurance Tester
  • Blaxel YC Spring 2025 · Active · 8 people — The perpetual sandbox platform
  • Vybe YC Spring 2025 · Active · 8 people — Secure internal apps. Built by AI in seconds. Powered by your data.
  • Kaelio YC Spring 2025 · Active · 8 people — The open-source context layer for data agents
  • Refresh YC Spring 2025 · Active · 8 people — Training gyms for computer use and software engineering work
  • Third Chair YC Spring 2025 · Active · 8 people — AI-Native IP Enforcement Agent
  • Naïve YC Spring 2025 · Active · 8 people — Unified Agent Infrastructure
  • Mesmer YC Spring 2025 · Active · 7 people — The operating system for the 100x Engineering Team
  • Airweave YC Spring 2025 · Active · 7 people — The open-source context retrieval layer for agents
  • Theta YC Spring 2025 · Active · 7 people — Specialized AI for Every Job
  • Sim YC Spring 2025 · Active · 6 people — Open source platform to build AI agent workflows

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