Harvest

Harvest is the time tracking and invoicing app that Danny Wen and Shawn Liu launched in 2006 after getting frustrated with spreadsheets while running their web design agency. They bootstrapped it to $10M+ ARR with a team of fewer than 70, staying lean and profitable for nearly 20 years — a rare feat in SaaS. Harvest's design philosophy is simplicity: track time across projects and clients, generate timesheets, turn them into invoices, and get paid via Stripe or PayPal. The app integrates with 50+ project management tools — Asana, Jira, Trello, Basecamp, Slack — so time tracking fits naturally into existing workflows. Harvest's longevity is its best marketing: it has been recommended in "essential tools for freelancers" lists for two decades, generating steady organic signups without paid acquisition. The company's consistent profitability and refusal to raise venture capital made it a cult favorite among bootstrapped founders.