Fullstory
Intelligent digital experiences. Powered by human context.
573 employees · est. 2014 · Atlanta, United States
SessionStack
AI-powered digital experience insights based on behavioral data. Acquired.
1 employees · est. 2016 · Bulgaria
Fullstory is the older company (2014 vs 2016); Fullstory is the larger of the two.
Side-by-Side Comparison
| Metric | Fullstory | SessionStack |
|---|---|---|
| Founded | ||
| Founded | 2014 older | 2016 |
| Headquarters | ||
| Headquarters | Atlanta, United States | Bulgaria |
| Employees | ||
| Employees | 573 larger | 1 |
| Industry | ||
| Industry | Not tracked yet | Not tracked yet |
| Funding Stage | ||
| Funding Stage | Unknown | Seed |
| Total Funding | ||
| Total Funding | $195.20M | $4.05M |
| Funding Rounds | ||
| Funding Rounds | 8 | 5 |
| Services | ||
| Services | Not tracked yet | Recruitment of research participants, Qualitative and quantitative research methods, AI-enhanced research tools, Session replays and behavioral tracking, Market research insights |
| Target Customers | ||
| Target Customers | Not tracked yet | Enterprise Research Teams, User Experience Researchers, Product Development Teams, Marketing Professionals |
| Taxonomy | ||
| Taxonomy | Behavioral Data Platform, Digital Analytics, Session Replay, Heat Maps, User Experience Research, Funnel Analytics, Conversion Rate Optimization, Web Analytics, Customer Support, Debugging Tools, Sentiment Analysis, Digital Experience, Fraud Detection, Enterprise Solutions | AI-powered Digital Experience Insights, Behavioral Data Analytics, E-commerce Optimization, Session Recording, Generative AI, Conversion Rate Optimization, User Behavior Analysis, Auto-Capture Capabilities, Retroactive Data History, Session Replay, User Segmentation, Trends Analysis, Co-browsing, Live Collaboration Tools |
| Website | ||
| Website | fullstory.com | sessionstack.com |
About Fullstory
Fullstory, founded in 2014 and headquartered in the United States, is at the forefront of revolutionizing digital experiences with its innovative behavioral data platform. The company’s slogan, "Intelligent digital experiences. Powered by human context.", encapsulates its mission to transform raw da...
About SessionStack
SessionStack, founded in 2016 and headquartered in Bulgaria, is an innovative player in the field of digital experience analytics. The company's platform, SessionStackAI, leverages cutting-edge AI-powered digital experience insights derived from behavioral data to assist online retailers in optimizi...
We will tell you when either one moves
BounceWatch watches Fullstory and SessionStack for new funding, fast hiring, new executives and a change of software vendor. When one happens, we email you the same day.
Funding, hiring, leadership and stack changes at Fullstory and SessionStack — by email.
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Compiled from the BounceWatch company index. We last looked at Fullstory on 11 May 2026, and SessionStack on 12 May 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.