FI 50

What it does

Founder Institute Alumni have raised over $1.5 billion in funding and are building businesses that matter across 6 continents. These are the companies that grew the quickest over the last year.

A curated list of the fastest growing startups in 2026 from the Founder Institute global portfolio.

A curated selection of Alumni that demonstrated exceptional growth in 2025-2026. Esusu reports on-time rent payments to credit bureaus, helping renters build credit and financial access. Raised a $50M Series C at a $1.2B valuation in December 2025, creating $46.9B in credit tradelines for renters. Orange Charger simplifies EV charging installation in multi-unit residential buildings. Raised a $6.5M seed round in 2024 and secured a strategic investment from Southwire, North America's leading wire and cable company. Endiatx develops swallowable robotic capsules called PillBot for minimally invasive GI tract imaging. Raised a $12M Series A in January 2025 with FDA clearance anticipated and…from fi.co

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  Founder Institute Report2019 · 10.fi.co · ▲150

  Insights from 15K+ founders & 4000+ alumni across 180 cities

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  who raised? lead list vault2023 · ▲139

  Close deals with 4,324 decision makers of VC-backed startups

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  who raised?2022 · whoraised.io · ▲194

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  Founder University2023 · ▲69

  12-Week Pre-Accelerator: MVP to $25k Investment

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  VC Sandbox2023 · vcsandbox.co · ▲209

  Raise 10X faster with the ultimate Notion VC guide

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  Breakout List2014 · breakoutlist.com · ▲183

  A list of the fastest growing startups

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  SimCity, but with Permits▲926

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  Life & fun · 2d ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 14d ago · tanzaniaeducationproject.org

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  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 15d ago · bigwords.page

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  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 9d ago · guitoro.com

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  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 13d ago · carrierexplode.com

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  Life & fun · 23d ago · space.bl2.net

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  Magic Sidebar by BlackMagic.so▲1,084

  Powerful enhanced experience for Twitter

  Life & fun · 2021 · blackmagic.so

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  I made a modern web UI for Wikipedia▲979

  A beautiful, clean, modern web UI for Wikipedia. Enhance your Wikipedia experience with a redesigned look, new features and customization.

  Life & fun · 2021 · modernwiki.app

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  thirdweb▲897

  Build web3 apps and games, easily

  Dev tools · 2021 · thirdweb.com

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  Emoji to Scale▲713

  Your favorite emojis. To scale (more or less).

  Life & fun · 2021 · javier.xyz

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  Alfread▲641

  Actually read articles saved for later

  Work · 2021

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  BitsForDigits▲624

  A partial buyout marketplace free for bootstrapped founders

  Commerce · 2021 · flippa.com