What work actually runs on.
Every month we rank the apps showing up inside real companies: the staples everyone pays for, the shadow IT nobody approved, and the AI tools spreading faster than a security review can get on the calendar.
It's usage data. Not surveys, and not press releases.
Anonymized, aggregated usage data. Source: Torii Research methodology; no single organization is identifiable.
The Index Reports
Definitions in the glossary; formulas on the Methodology page.
Shadow IT Index
What are employees adopting without asking? Apps picked up outside sanctioned SSO and procurement, ranked by monthly adoption.
16 editionsLatest: October 2026AI Breakout
Which AI tools are people using, not just announcing? The top 30 AI apps by real usage.
16 editionsLatest: October 2026Adoption Index
What does everyone already run? The top 30 apps by org-level adoption, against a 12-month average.
15 editionsLatest: October 2026What's getting attention
Every theme, every edition →Rankings tell you which apps. Themes tell you what kind. Here's how much of each index is AI, and where it's heading.
Shadow IT Index
25% AI-native in October 2026 (7 of 28 apps), down from 30% in July 2025.
Biggest theme now: Security and IT (21%). By theme →
AI Breakout
87% AI-native in October 2026 (26 of 30 apps), down from 90% in July 2025.
Biggest theme now: AI assistants (27%). By theme →
Adoption Index
13% AI-native in October 2026 (4 of 30 apps), up from 5% in August 2025.
Biggest theme now: Work suites and collaboration (43%). By theme →
Source: Torii Research, anonymized and aggregated usage data. AI-native apps as a share of each edition's list; one theme per app. How themes work.
Every report
48 reports since July 2025
October 2026
Claude AI, Slack, and Atlassian hold the top three in October, and OpenAI makes the month's biggest move. · 30 apps- 1
Claude AI - 2
Slack - 3
Atlassian - 4
Zoom - 5
ChatGPT
October 2026
AI agents lead October's Shadow IT Index, with Grok Bot first at 27% adoption.
AI BreakoutOctober 2026
Claude AI reaches 98% adoption in October, and Grok breaks into the top 10.
AI BreakoutSeptember 2026
Claude AI reaches 97% adoption in September, and OpenAI moves past Google Gemini into third.
Adoption IndexSeptember 2026
Adobe Acrobat climbs 11 places in September as Claude AI holds #1 for a third month.
Shadow IT IndexSeptember 2026
Web browsers top September's Shadow IT Index, with Apple Safari first at 15% adoption.
AI BreakoutAugust 2026
Claude AI widens its lead in August at 94% adoption, while OpenCode drops to the bottom of the list.
Adoption IndexAugust 2026
Claude AI holds #1 for a second month, while OpenAI makes the biggest climb.
Shadow IT IndexAugust 2026
A shorter Shadow IT list in August, led by the AI note taker Plaud.ai at 8% adoption.
AI BreakoutJuly 2026
Claude AI reaches 91% adoption in July, and n8n makes the biggest climb.
Adoption IndexJuly 2026
Claude AI returns to #1 in July, and GitHub jumps into the top three.
Shadow IT IndexJuly 2026
AI coding agents lead July's Shadow IT Index, with Google Jules first at 33% adoption.
AI BreakoutJune 2026
The top five AI apps hold their places in June, with Claude AI still first.
Adoption IndexJune 2026
Slack takes back #1 in June after one month behind Claude AI.
Shadow IT IndexJune 2026
Developer tools dominate June's shadow IT list, while a visitor management app takes the top spot.
AI BreakoutMay 2026
The top three hold steady in May while Microsoft Copilot surges into the top 10.
Adoption IndexMay 2026
Claude AI reaches #1 in May, the first AI app to top any published edition of the Adoption Index.
Shadow IT IndexMay 2026
Everyday utilities lead May's shadow IT, with screen capture and PDF tools at the top.
AI BreakoutApril 2026
Claude AI takes #1 in April, and Google Gemini jumps into the top three.
Adoption IndexApril 2026
Zoom returns to #1 in April, Google Gemini enters at #13, and March's Microsoft gains reverse.
Shadow IT IndexApril 2026
An ad platform and an AI app builder lead April's shadow IT, as AI tools spread through the rest of the list.
AI BreakoutMarch 2026
ChatGPT and Claude AI hold the top two spots in March as OpenAI Codex enters the top 10.
Adoption IndexMarch 2026
Slack takes the top spot in March as Microsoft's document apps climb the ranking.
Shadow IT IndexMarch 2026
OpenAI Codex leads March's shadow IT by a wide margin, as AI tools take the top two spots.
AI BreakoutFebruary 2026
AI is now a geopolitical battleground, with developers as the first front
Adoption IndexFebruary 2026
Claude AI is establishing a dominant position as core business and developer tools surge
Shadow IT IndexFebruary 2026
Shadow IT reveals a strong focus on productivity, from daily organization to creative AI development.
AI BreakoutJanuary 2026
AI adoption is professionalizing, with explosive movement in niche workflows
Adoption IndexJanuary 2026
AI is now the primary driver of shadow IT adoption
Shadow IT IndexJanuary 2026
Shadow IT reveals a dual focus: optimizing daily work and developing internal AI capabilities.
Adoption IndexDecember 2025
Zoom holds #1 in December, while Google Workspace climbs to #2 and Claude AI recovers.
Shadow IT IndexDecember 2025
Google Antigravity dominates December's shadow IT list with 52% adoption, four times the next app.
AI BreakoutDecember 2025
Google Antigravity enters December's AI Breakout at #3, the highest debut in the ranking so far.
Adoption IndexNovember 2025
Zoom takes #1 in November, while Claude AI slips 5 places a month after joining the ranking.
AI BreakoutNovember 2025
ChatGPT Atlas enters November's AI Breakout at #8, the highest new entry of the month.
Shadow IT IndexNovember 2025
Desktop and design tools lead November's shadow IT, and none of the 10 apps claims SOC 2.
AI BreakoutOctober 2025
The top five AI apps hold their places in October, while LM Studio enters the ranking at #9.
Shadow IT IndexOctober 2025
Every app in October's Shadow IT Index scores 92 or higher, led by the print management tool uniFLOW and the AI app builder…
Adoption IndexOctober 2025
Slack returns to #1 in October, and Claude AI enters the Adoption Index at #13.
AI BreakoutSeptember 2025
ChatGPT and Claude AI hold the top two spots in September, while n8n is the month's biggest climber.
Adoption IndexSeptember 2025
Google Workspace moves up to #1 in September, and GitHub climbs into the top five.
Shadow IT IndexSeptember 2025
Eight of September's nine shadow IT apps score the maximum of 100, led by Lindy AI.
Shadow IT IndexAugust 2025
Every app in August's Shadow IT Index scores above 90, and only one claims more than one of SOC 2, ISO 27001, and GDPR.
AI BreakoutAugust 2025
The same six apps lead in August, while four new apps enter the ranking, led by Gemini Code Assist at #7.
Viral App Radar2025
Google AI Studio is the fastest-spreading app of the year, with the top viral score and the quickest time to double.
Adoption IndexAugust 2025
Slack leads the first Adoption Index, and every app in the top 20 claims at least two of SOC 2, ISO 27001, and GDPR.
Shadow IT IndexJuly 2025
Every app in the first Shadow IT Index scores the maximum of 100, so this edition ranks them by viral score.
AI BreakoutJuly 2025
ChatGPT and Claude AI lead the first AI Breakout ranking, and half of the 20 apps are productivity tools.
Articles
The longer story behind the numbers.
ArticleThe Modern Video Stack
Today, video is everywhere. It’s an essential way to scale asynchronous communication. It’s critical for training,…By John Baker ·
ArticleDIY Shadow IT: The AI Augmented Citizen Developer
Enterprises are witnessing a silent but seismic shift: employees are no longer just using technology, they’re creating…By John Baker ·Usage, not opinions.
Surveys tell you what people say they use. Our indexes count what actually shows up across Torii customers, then anonymize it. That includes the shadow IT, which is usually where the interesting stuff is.
Read the methodology →new editions of every index.
indexes: Shadow IT, AI Breakout, and Adoption.
organizations identifiable. Everything is aggregate.
Source: Torii Research methodology. Press resources on the Press page.