Liminary vs Knowledge Plane vs PolicyCentral.ai vs Stacks

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

Your tool
Liminary
vs
Competitor 1
Knowledge Plane
Competitor 2
PolicyCentral.ai
Competitor 3
Stacks
Compare
4 tools · best value per row highlighted
Your tool Liminary
liminary.io
Ever open a browser tab to find something you saved three months ago, only to spend ten minutes hunting through bookmarks
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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Engineering teams watch their AI tools hallucinate outdated project details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
Competitor Stacks
betterstacks.com
Stacks is a personal AI workspace that gathers what you find online into one searchable place.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
23.3Kvisits/mo
—
324visits/mo
6.3Kvisits/mo
MoM change
▼ 18.4%
—
▼ 78.9%
▼ 8.4%
6-month growth
-10.4%
—
—
-50.8%
Global rank web
#1,028,276
—
#7,020,931
#3,182,249
Avg. last 3 months
24.3K
—
621
6.1K
Bounce rate lower is better
37%
0%
37%
41%
Pages / visit
2.0
—
1.0
1.7
Visit duration
51s
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—
6s
Traffic sources
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—
—
—
LiminaryKnowledge PlanePolicyCentral.aiStacks
09.3K18.6K27.9K37.2KLiminary · 37.2KLiminary · 16KLiminary · 26KLiminary · 18.1KLiminary · 28.2KLiminary · 21.2KLiminary · 28.5KLiminary · 23.3KPolicyCentral.ai · 1.5KPolicyCentral.ai · 324Stacks · 7KStacks · 12.2KStacks · 12.8KStacks · 8.7KStacks · 5.7KStacks · 5.1KStacks · 6.8KStacks · 6.3K1001K10K100KLiminary · 37.2KLiminary · 16KLiminary · 26KLiminary · 18.1KLiminary · 28.2KLiminary · 21.2KLiminary · 28.5KLiminary · 23.3KPolicyCentral.ai · 1.5KPolicyCentral.ai · 324Stacks · 7KStacks · 12.2KStacks · 12.8KStacks · 8.7KStacks · 5.7KStacks · 5.1KStacks · 6.8KStacks · 6.3KDec '25Jan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
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Paid
Starting price
$29per month · free tier available
$19per month · free tier available
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$9per month
Free tier
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Free trial
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API access
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Plans
Explorer FreePro $29/moTeam $50/mo
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Be Productive $89/yrBe Collaborative $199/yrBe Creative $349/yr
Capabilities input → output
Input
DocumentsWeb pagesText
CodeTextDocuments
TextDocuments
Web pagesTextDocuments
Output
Text
Text
TextImagesAudio
Text
Skill level
Intermediate
Intermediate
Intermediate
Beginner-friendly
Categories
Education & LearningAI Knowledge Management
Education & LearningAI Knowledge Management
Education & LearningAI Knowledge Management
Education & LearningProductivity & OfficeAI FilesAI Knowledge Management
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
5
7
6
4
Knowledge bases
Digital information management
Note taking
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Bookmarking
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Knowledge graphs
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Policy communication
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Knowledge
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Knowledge maps
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Knowledge sourcing
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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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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
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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.