AI tools directory + stack graph

Search the AI tools directory, then build the stack.

Browse AI tools by category, role, pricing, freshness, and stack fit. Unlike generic directories, StackBuilder shows how tools fit into real workflows.

Directory health
100
Tools
100
Verified
72
Free/Freemium
Ranked by stack usefulness, freshness, verification, saves, clicks, and editor fit. Never votes alone.
1
C

General AI assistant for writing, coding, analysis, and workflow support

↻ FreshFrom $20/mo
2
C

Long-context AI assistant for reasoning, writing, coding, and research synthesis

↻ FreshFrom $20/mo
3
G

Google AI assistant for search-connected research, writing, and productivity workflows

↻ FreshFree plan available
4
P

AI answer engine for cited research, search, and briefing workflows

↻ FreshFrom $20/mo
5
G

xAI assistant for conversation, research, and social-aware context

↻ FreshFree plan available
6
M

AI assistant integrated across Meta apps for chat, image, and creator workflows

↻ FreshFree
7
P

Multi-model AI chat platform for trying and comparing assistants

↻ FreshFree plan available
8
L

Mistral AI assistant for chat, reasoning, and model access

↻ FreshFree plan available