Quiet Capital

Social news aggregation and discussion platform where users submit, vote on, and discuss content across millions of community-driven forums called subreddits.

Global HR and payroll platform that enables companies to hire, pay, and manage workers and contractors in over 150 countries, handling compliance, taxes, and benefits.

Substack is a publishing platform that enables writers, journalists, and creators to publish subscription newsletters, podcasts, and other media directly to their audiences. The platform handles payments, distribution, and website hosting, allowing creators to monetize their work through paid subscriptions while retaining ownership of their content and subscriber lists.

Commercial space infrastructure company offering in-space transportation and last-mile delivery services for satellites using water plasma propulsion technology. Went public via SPAC merger in 2021, though the deal was marred by SEC enforcement actions over misleading disclosures related to its Russian-born founders.