error-tracking
(4)
Raindrop
Raindrop is a San Francisco applied-AI company building the monitoring and observability platform for AI agents - often described as 'Sentry for AI agents.' It traces production agent runs, automatically detects silent failures like hallucinations, loops, and broken tools, and uses small custom models to surface behavioral signals such as user frustration. Founded in 2023 by Zubin Koticha, Alexis Gauba, and Ben Hylak, the company raised a $15M seed round led by Lightspeed in December 2025 and counts Replit, Speak, Clay, Framer, and AngelList among its customers.
Rollbar
Rollbar is a San Francisco-based developer tools company that builds real-time error monitoring and AI-assisted debugging software. Founded in 2012 by former Lolapps engineers Brian Rue and Cory Virok, Rollbar helps engineering teams catch, group, and resolve software errors across web, mobile, and backend applications.
PostHog
PostHog is an all-in-one, open-source developer platform that bundles product analytics, web analytics, session replay, feature flags, A/B testing, experiments, surveys, error tracking, a customer data platform, and a data warehouse into a single stack engineers can self-host or run in the cloud. Founded in 2020 by James Hawkins and Tim Glaser through Y Combinator, it lets product engineers track usage, ship features, and keep customer data in one place rather than stitching together a dozen SaaS tools. The company reached unicorn status in 2025 with a $75M Series E at a $1.4B valuation.
LogRocket
LogRocket is a Boston-based software company that combines session replay, product analytics, and error tracking into a single platform so product and engineering teams can see exactly what users experienced before something broke. Founded in 2016 by childhood friends Matthew Arbesfeld and Ben Edelstein, it now serves thousands of companies and has layered AI (Galileo) on top to surface user friction automatically.