peer-to-peer
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Adaptiva Deleted 1,500 Servers. Now It Wants to Put Patching on Autopilot
The Kirkland software company turned spare capacity on ordinary devices into an enterprise delivery network. Its next act is harder: convincing security teams that machines can patch machines without losing the human veto.
The Lab That Tried to Replace the Web Became a 750-Team Operating System
Protocol Labs started by giving data an address that could survive a broken link. A decade later, it is testing a larger idea: whether an open network can move research from strange prototype to useful company faster than a conventional lab can.
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Curtsy
Curtsy is a mobile-first, peer-to-peer resale marketplace where Gen Z and young millennial women buy and sell secondhand clothing, shoes and accessories. Founded in 2016 and originally a dress-rental service, it pivoted to resale and built its edge around making listing fast for casual sellers - using machine learning to suggest prices, fill in item details and estimate shipping weight, backed by human review. Sellers keep more of their money than on rival platforms (a ~19-20% commission), buyers save up to 70% on brands like Lululemon, Free People and SKIMS, and the app carries a 4.8-star rating across tens of thousands of reviews. Curtsy raised an $11M Series A led by Index Ventures in January 2021, part of $14.5M total funding.
BAXUS
BAXUS is a New York-based peer-to-peer marketplace for fine and rare wines and spirits, built on the Solana blockchain. It authenticates physical bottles, stores them in climate-controlled vaults, and issues digital tokens representing direct ownership - giving collectors and institutions real-time pricing, instant trade settlement, and the ability to use bottles as loan collateral. The platform has facilitated over $20 million in whiskey trades and raised a $5M seed round led by Multicoin Capital in 2024.
Pando
Pando is a San Francisco fintech building a financial ecosystem for high-potential founders. Its flagship product lets ambitious people contractually pool a slice of future earnings above a hurdle (typically 3% above $1M/year) into a shared portfolio, then split the upside evenly. On top of that sits a curated network: Founder Peer Groups of 5-8 vetted operators, an Investor Exchange of 750+ investors, and member events. Founded in 2017 by Charlie Olson and Eric Lax at Stanford GSB, Pando has grown to more than 900 clients in pools projected to earn over $11B.
Riders Share
Riders Share is the largest peer-to-peer motorcycle rental marketplace in the U.S., connecting motorcycle owners with vetted riders. Founded by Guillermo Cornejo after a costly crash left him unable to afford a new bike, the Austin-based platform turns underused garages full of Harleys, Ducatis and BMWs into income for owners and affordable rides for the 20+ million ex-riders who want to get back on two wheels. It layers machine-learning rider screening, proprietary insurance backed by Lloyd's of London, and roadside assistance on top of a simple Airbnb-for-motorcycles model.
Airbnb
Airbnb is a global travel marketplace that lets hosts rent out homes, rooms, and experiences to guests in more than 220 countries and regions. Born in 2008 from three air mattresses on a San Francisco apartment floor, it turned spare space into a category-defining business, went public in 2020 at roughly a $100 billion valuation, and in 2025 expanded beyond stays into Services and a redesigned Experiences product - positioning itself as an everything app for travel.
Archive
Archive is the technology platform behind brand-owned resale. It builds and operates customized secondhand storefronts for fashion and lifestyle brands - including The North Face, New Balance, Oscar de la Renta and Dr. Martens - so they can keep products in circulation, capture a new revenue stream, and meet customers who increasingly refuse to buy new.
GoFundMe
GoFundMe is the world's largest social fundraising platform, where individuals, communities, and nonprofits raise money for everything from medical bills and tuition to disaster relief. Founded in 2010, it has helped people raise over $40 billion through nearly 200 million donations.
Kindred
Kindred is a members-only home-swapping network that turns primary residences into a credit-based travel platform. Founded in 2021 by Opendoor alums Justine Palefsky and Tasneem Amina, the San Francisco company has grown to nearly 300,000 members across 150+ cities and raised $125M in combined Series B/C in February 2026 to scale a 'third way' alternative to hotels and short-term rentals.
Peerspace
Peerspace is an online marketplace for hourly venue rentals - meetings, productions, parties, and offsites in spaces you couldn't book through a hotel concierge. Often described as the 'Airbnb for hourly spaces,' it has grown from a San Francisco experiment in 2014 into a network of 45,000+ listings across seven countries, surpassing one million bookings and $500M in cumulative gross sales.