SHORTLIST:
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PromptShelf
PromptFlow
Prompta
PromptCatalog
PromptVault
PromptDeck
PromptHub
PromptForge
PromptLab
PromptBase
PromptPilot
PromptHive
PromptBuddy
PromptKit
PromptCatalog
Promptr
PromptStudio



Descriptive and professional

# PromptHub
# PromptDeck
# PromptStudio
# PromptVault
PromptAtlas
PromptLibrary Pro
PromptOrganizer
PromptWorkspace
# PromptCatalog
PromptNavigator
Brandable single-word

# Promptr
Promptly
Promptus
Prompton
Promptrix
Promptrise
# Prompta
Prompto
Promptaic
Workflow-leaning (reflects your “workflow” section)

# PromptFlow
FlowPrompt
PromptChain
PromptPipeline
PromptLoom
FlowForge
FlowDeck
FlowVault
FlowAtlas
WorkFlow
Library/archive metaphors

PromptArchive
PromptIndex
# PromptShelf
PromptStack
PromptBinder
PromptRegistry
PromptCodex
# PromptCatalog
PromptRepository
PromptCard
Creation/craft metaphors

# PromptForge
PromptWorkshop
PromptFoundry
# PromptLab
PromptCraft
PromptWorks
PromptFactory
PromptKitchen
PromptPlaybook
PromptPatterns
Team/collaboration oriented

PromptSpace
PromptSync
PromptCircle
PromptCollab
# PromptBase
PromptBoard
PromptRoom
PromptShare
PromptSuite
PromptCollective
Playful/modern

# PromptPilot
PromptNest
# PromptHive
PromptGarden
PromptCanvas
PromptCompass
PromptSpark
# PromptBuddy
PromptPocket
# PromptKit
Top picks with quick rationale

PromptDeck: Conveys organized, actionable collections; fits cards, tags, and favorites.
PromptForge: Emphasizes creation and refinement; aligns with workflows and editing.
PromptFlow: Directly ties to your workflow feature; suggests smooth processes.
PromptVault: Signals safety and structure; great for folders, pins, and favorites.
PromptAtlas: Feels expansive and navigable; fits filters and categories.
PromptStudio: Professional, creative; matches submission, editing, and management.
PromptLoom: Unique and memorable; suggests weaving tags and workflows together.
PromptHub: Familiar and straightforward; central place for prompts and folders.
Tagline ideas

Organize, craft, and share prompts with flow
Your complete workspace for prompt creation and curation
From idea to workflow—prompts, organized
Build, tag, and refine prompts across platforms
The structured home for your best prompts
Workflows, tags, folders—everything your prompts need
Craft prompts faster with a smarter library
Pin, tag, and flow—prompt management made easy
A studio for prompts and the workflows behind them
Turn prompt chaos into clarity
Decision checklist

Is it easy to say and spell?
Does it hint at your key differentiator (workflows, organization, collaboration)?
Can it scale from solo to team use?
Is the domain and handle reasonably available (consider .app/.io/.dev/.ai)?
Does it avoid overlap with major existing products or trademarks?
Can you imagine a simple logo and icon for it?