Functional Software, Inc.

Functional Software, Inc. is a software company that develops application monitoring and error tracking solutions for developers, with tools for performance monitoring, crash reporting, and debugging of web and mobile applications.

Functional Software, Inc. ranks #57 among the web technology companies we track.
The company's technologies are present on 1.7% of websites.

Statistics based on 4M+ analyzed websites. About this data

🔍 Overview

🏠 Website
- sentry.io #71,859
🏤 Headquarters
- San Francisco, California, United States
🗓️ Founded
- 2008 (18 years ago)

📁 Technology Categories

Application monitoring

⚡ Technologies

#	Technology	Reach
1	Sentry An open-source, developer-first error tracking and performance monitoring platform that helps identify, debug, and resolve issues across web, mobile, and backend applications. Free$29+/month	1.7%

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 4,046,631 websites.
Statistics were last calculated on November 12, 2026.
For more details, see our methodology and disclaimer.