Social Startups

Design platform; Blackbird invested when it was just an idea and in every round since.

54 investors

Discord is a communications platform for voice, video, and text chat designed primarily for gaming communities and players. It enables game developers to integrate social features directly into games and supports live streaming, custom communities, and in-game activities.

47 investors

A social platform where users post content and discussions that are ranked by community votes, reaching hundreds of millions of monthly visitors across web and mobile applications.

37 investors

Snapchat is a mobile app for communicating with friends and family through photos and videos, featuring augmented-reality Lenses, creative sharing tools, and a personalized map for discovering places and content. It is a consumer social and media platform operated by Snap Inc.

36 investors

WhatsApp is a messaging and calling application that provides text, media, and voice communication services to users across 180+ countries. The app prioritizes end-to-end encryption and operates as a standalone service focused on reliable global communication.

26 investors

Fomo is a social-first cryptocurrency trading application that enables users to trade various crypto tokens, including memecoins and viral tokens, seamlessly across web and mobile platforms with multichain and gasless transactions.

21 investors

Whatnot is a live commerce marketplace that enables creators and entrepreneurs to build businesses by connecting with audiences through real-time streaming and shopping. The platform combines social interaction with commerce, allowing content creators to monetize their passion.

20 investors

Meta operates Facebook, Instagram, WhatsApp and Threads, and funds the Reality Labs division and the open-weight Llama models.

17 investors

Tumblr is a microblogging and social networking platform where users create and follow blogs, share posts, and explore content organized by topic tags such as music. It hosts a community-driven feed of text, images, and other media across interest-based categories.

17 investors

Cargomatic operates a marketplace that connects shippers with carriers for local freight, drayage, intermodal, LTL, and full-truckload trucking across the top 20 US ports. It offers technology-driven services including smart routing, load bundling, white glove direct-to-consumer delivery, and APIs for integration.

16 investors

ClassDojo is a global community platform connecting over 50 million teachers and families to share learning moments through photos, videos, and messages. The platform serves schools and families worldwide, providing a safe online space for children to learn through play and discovery.

15 investors

Hootsuite is a social media management platform that helps organizations manage, analyze, and optimize their social media presence across multiple networks. The company serves businesses of all sizes, from small companies to enterprises, providing tools for social marketing, listening, employee advocacy, and customer service.

15 investors

Lucid provides cloud-based visual collaboration and communication software for teams to visualize workflows, create diagrams, whiteboards, and roadmaps. The platform serves enterprise customers across Fortune 500 companies and is used by over 100 million individual users globally.

15 investors

Clubhouse is a social audio platform where users can join live voice conversations and discussions.

14 investors

Poshmark is a fashion resale marketplace that enables individuals to buy and sell secondhand clothing and accessories through a mobile-first platform. The company operates a community-driven commerce model focused on sustainable fashion across the U.S. and Canada.

14 investors

Roblox operates an online platform where users sign up to play and create games and interactive experiences. It offers a social gaming environment accessible across multiple devices.

14 investors

Sleeper operates a mobile app and website offering free-to-play games, paid contests of skill, and fantasy sports products for sports fans to engage together socially. The platform enables users to create bonds with friends while participating in fantasy sports competition.

14 investors

Alinea is a digital wealth management platform that provides AI-assisted portfolio management and automated investing for individual investors. The platform combines expert-built portfolios with an AI copilot, human advisors, and is SEC-registered to serve retail investors building wealth.

13 investors

Beacons provides software tools including website hosting, email marketing, and online store capabilities for content creators to manage their businesses in one place.

13 investors

Citizen operates a platform that aggregates real-time public safety information and alerts to help communities stay informed and respond to emergencies. The service connects residents, local officials, and emergency responders across 60+ cities to create safer neighborhoods.

13 investors

Meetup is a platform that helps people discover and create local communities around shared interests—from professional development and career networking to hobbies, creative pursuits, and social activities. It connects groups of people across cities and topics to meet in person, learn, and build relationships.

12 investors

Truecaller offers a caller ID and spam-blocking app that identifies incoming calls and filters spam using community-contributed names and on-device processing. Its free version is ad-supported while a paid Premium tier adds ad-free use and enhanced blocking features.

12 investors

XMTP is an open source, decentralized messaging protocol that uses quantum-resistant encryption to let developers build secure, programmable chat apps, mini-apps, and AI agents with native support for payments and digital assets. It serves developers and companies building messaging experiences, offering identity-agnostic connections and network-level spam consent without platform lock-in.

12 investors

Buffer is a social media management platform that enables small businesses, creators, and individuals to schedule posts, analyze engagement, and manage their presence across multiple social networks. The company provides tools for organic marketing and content distribution beyond publishing, including analytics and micro-site building capabilities.

11 investors