Stacks vs Liminary vs Knowledge Plane vs PolicyCentral.ai

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Stacks
vs
Competitor 1
Liminary
Competitor 2
Knowledge Plane
Competitor 3
PolicyCentral.ai
Compare
4 tools · best value per row highlighted
Your tool Stacks
betterstacks.com
Stacks is a personal AI workspace that gathers what you find online into one searchable place.
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Competitor Liminary
liminary.io
Ever open a browser tab to find something you saved three months ago, only to spend ten minutes hunting through bookmarks
Make main Remove
Competitor Knowledge Plane
knowledgeplane.io
Engineering teams watch their AI tools hallucinate outdated project details
Make main Remove
Competitor PolicyCentral.ai
policycentral.ai
AI-driven Policy management and access platform
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
23.3Kvisits/mo
—
324visits/mo
MoM change
▼ 8.4%
▼ 18.4%
—
▼ 78.9%
6-month growth
-50.8%
-10.4%
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Global rank web
#3,182,249
#1,028,276
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#7,020,931
Avg. last 3 months
6.1K
24.3K
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621
Bounce rate lower is better
41%
37%
0%
37%
Pages / visit
1.7
2.0
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1.0
Visit duration
6s
51s
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Traffic sources
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StacksLiminaryKnowledge PlanePolicyCentral.ai
09.3K18.6K27.9K37.2KStacks · 7KStacks · 12.2KStacks · 12.8KStacks · 8.7KStacks · 5.7KStacks · 5.1KStacks · 6.8KStacks · 6.3KLiminary · 37.2KLiminary · 16KLiminary · 26KLiminary · 18.1KLiminary · 28.2KLiminary · 21.2KLiminary · 28.5KLiminary · 23.3KPolicyCentral.ai · 1.5KPolicyCentral.ai · 3241001K10K100KStacks · 7KStacks · 12.2KStacks · 12.8KStacks · 8.7KStacks · 5.7KStacks · 5.1KStacks · 6.8KStacks · 6.3KLiminary · 37.2KLiminary · 16KLiminary · 26KLiminary · 18.1KLiminary · 28.2KLiminary · 21.2KLiminary · 28.5KLiminary · 23.3KPolicyCentral.ai · 1.5KPolicyCentral.ai · 324Dec '25Jan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Freemium
Freemium
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Starting price
$9per month
$29per month · free tier available
$19per month · free tier available
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Free tier
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Free trial
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API access
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Plans
Be Productive $89/yrBe Collaborative $199/yrBe Creative $349/yr
Explorer FreePro $29/moTeam $50/mo
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Capabilities input → output
Input
Web pagesTextDocuments
DocumentsWeb pagesText
CodeTextDocuments
TextDocuments
Output
Text
Text
Text
TextImagesAudio
Skill level
Beginner-friendly
Intermediate
Intermediate
Intermediate
Categories
Education & LearningProductivity & OfficeAI FilesAI Knowledge Management
Education & LearningAI Knowledge Management
Education & LearningAI Knowledge Management
Education & LearningAI Knowledge Management
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
6
6
12
7
Knowledge bases
Digital information management
Bookmarking
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Chrome extensions
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Note taking
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Knowledge graphs
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Policy communication
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Agent memory
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Developer tools
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Knowledge
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Knowledge maps
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Knowledge sourcing
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Code documentation
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Codebase q a
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Employee management
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Knowledge exchange
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Knowledge exploration
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Policy analysis
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Policy summaries
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Policy updates
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Slack
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Web search summaries
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.