AI Visibility Index / Industries / Notes & knowledge bases
Most AI-visible notes & knowledge base apps (2026)
We scored 15 notes & knowledge base apps on how easily ChatGPT, Perplexity, Claude and AI agents can find, understand and use them. Capacities leads with 98/100. Data from our crawl on October 18, 2026; scores are a homepage snapshot, not live.
Notes & knowledge base apps average score
Whole-index average (-11 for this industry)
of these sites miss “Question & answer content”
| # | Product | Score | Crawlers | Content | Schema | Agents |
|---|---|---|---|---|---|---|
| 1 | Capacities capacities.io | 98 | 100 | 93 | 100 | 100 |
| 2 | Craft craft.do | 96 | 92 | 94 | 100 | 100 |
| 3 | Notion notion.com | 95 | 89 | 94 | 100 | 100 |
| 3 | Notion notion.so | 95 | 89 | 94 | 100 | 100 |
| 5 | Tettra tettra.com | 85 | 100 | 89 | 100 | 47 |
| 6 | Nuclino nuclino.com | 79 | 95 | 100 | 20 | 64 |
| 7 | Slite slite.com | 78 | 100 | 89 | 20 | 64 |
| 8 | Heptabase heptabase.com | 77 | 85 | 81 | 100 | 47 |
| 9 | Obsidian obsidian.md | 73 | 89 | 100 | 20 | 47 |
| 10 | Bear bear.app | 72 | 95 | 87 | 20 | 47 |
| 11 | Reflect reflect.app | 71 | 89 | 89 | 20 | 52 |
| 12 | Almanac almanac.io | 61 | 95 | 74 | 8 | 26 |
| 13 | Roam Research roamresearch.com | 50 | 100 | 31 | 8 | 26 |
| 14 | Mem mem.ai | 46 | 85 | 33 | 8 | 26 |
| 15 | Logseq logseq.com | 44 | 85 | 26 | 8 | 26 |
Sub-scores: Crawlers = AI crawler access, Content = answer-engine content, Schema = structured data, Agents = agent readiness (llms.txt, API/MCP). Ties share a rank.
Notes & knowledge base apps vs the whole index
| Area | This industry | All 538 sites |
|---|---|---|
| Overall score | 75 | 86 |
| AI crawler access | 93 | 97 |
| Answer-engine content | 78 | 89 |
| Structured data | 49 | 71 |
| Agent readiness | 58 | 76 |
Most common gaps among notes & knowledge base apps
Want to climb the ranking? The RankRoot Traffic Boost ($49 once) includes 7 days of Pro to audit up to 50 pages per scan and generate llms.txt, llms-full.txt and per-page JSON-LD, and your product featured across RankRoot for 30 days (homepage, launch directory, your industry page and the tool AI agents use to find products), live today with a dofollow link and a public count of every visitor sent. Get the Traffic Boost · $49 · or have it done for you
Listed here? Open your product's page to grab a “Ranked #N in Notes & knowledge bases” badge for your site or README.
FAQ
Which notes & knowledge base apps are the most visible to AI search engines?
In our October 18, 2026 crawl, the top-scoring notes & knowledge base apps were Capacities (98/100), Craft (96/100), Notion (95/100). The score measures how easily ChatGPT, Perplexity, Claude and AI agents can crawl, understand and use each product's homepage.
How do notes & knowledge base apps compare with the rest of the AI Visibility Index?
The 15 notes & knowledge base apps we track average 75/100, 11 points below the 86/100 average across all 538 SaaS and AI sites in the index.
What is the most common AI visibility gap among notes & knowledge base apps?
73% of the notes & knowledge base apps we checked miss "Question & answer content" (vs 71% across the whole index). Fix: Add an FAQ answering the exact questions buyers ask ChatGPT ("best X for Y", "X vs Y", "how much does X cost").
How is the AI visibility score calculated?
RankRoot checks four areas on each homepage: AI crawler access (robots.txt rules for GPTBot, ClaudeBot, PerplexityBot and others), answer-engine content (title, headings, FAQ-style content, server-rendered text), structured data (JSON-LD, Organization/Product schema) and agent readiness (llms.txt, discoverable API or MCP server). Each area is scored 0 to 100 and combined into one score.
When was this data collected, and can a company update its score?
Scores are a snapshot from our crawler on October 18, 2026. They are not updated automatically. Anyone can rescan a site live for free, and we refresh the index periodically.
My notes & knowledge base app isn't listed. How do I see where it would rank?
Run a free scan at https://getrankroot.com/report. You get the same score and checks, so you can compare it directly with this leaderboard.
Other industry leaderboards
Email marketing & newslettersEmail & messaging APIsSales, CRM & lead generationCustomer support & chatbotsProduct analytics & experimentationFeedback, forms & bug reportingProduct adoption & interactive demosMonitoring & observabilityCode review & code qualityCI/CD & testingGit hosting & engineering intelligenceAI coding assistants & app buildersNo-code & internal tool buildersAPI development & documentationAI models & model APIsGPU cloud & AI inferenceAI agent builders & automationAgent tools, MCP & integrationsLLM observability & evalsSearch engines & vector databasesWeb scraping & search APIsDatabases & backend platformsCloud hosting & deploymentData pipelines, BI & document AISecurity, auth & identityPayments, finance & HRAI video & audio creationVoice AI & speechAI meeting assistantsTasks, calendars & schedulingProject & work managementWebsite builders, CMS & ecommerceSEO & AI search visibilityAI writing assistantsDesign, presentations & AI imagesMedia, file & image APIsBrowsers, search & AI directories
Methodology and full findings: State of AI Visibility 2026. Industry labels are assigned by RankRoot from each product's own homepage description.