Prom.dev Launches Shareable Prompt Platform for Collaborative AI Development

Prom.dev, founded by Heather Jackson in November and emerging from stealth in February 2026, raised $1.5 million pre-seed from Pioneer Square Labs and Mayfield. The Seattle startup treats prompts as remixable, interactive web apps, offering a free tier to build community-driven libraries of prompts. Its focus on sharing and forking aims to accelerate prompt iteration and foster a creator ecosystem.