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Polar

Finance & Accounting·21 vendors·Updated Nov 10, 2026·polar.sh·Subprocessor list
AI Stack · 2
Infrastructure · 19

AI Stack

Foundation Models

Anthropic
219 companiessubprocessor
Product and engineering triage
OpenAI
285 companiessubprocessor
Product and engineering triage
View their stack →

Infrastructure

Cloud & Networking

AWS
397 companiessubprocessor
Serving core billing platform features and storing historical platform usage for security audits
Google Cloud
354 companiessubprocessor
Communication and collaboration
Vercel
94 companiessubprocessor
Service core billing platform features

Collaboration & Productivity

T
Tally
1 companiessubprocessor
Collecting form and survey responses

Accounting Software

Intuit
2 companiessubprocessor
Bookkeeping and financial reporting

Databases

PlanetScale
21 companiessubprocessor
Serving core billing platform features

Observability

P
Pydantic Logfire
3 companiessubprocessor
Technical performance and errors reporting. Powering AI features on Polar platform
Sentry
148 companiessubprocessor
Technical errors reporting

Billing & Payments

C
ChargebackStop
1 companiessubprocessor
Monitoring credit card chargebacks
N
Numeral
1 companiessubprocessor
Processing tax/VAT
Stripe
207 companiessubprocessor
Processing payments and tax/VAT

Analytics & BI

PostHog
80 companiessubprocessor
Analyzing user and customer flows to optimize the platform
Tinybird
10 companiessubprocessor
Serving core billing platforms features and usage-based analysis

CRM & Support

Attio
11 companiessubprocessor
Managing customer and sales relationships
Plain
30 companiessubprocessor
Customer support service

Communications

Resend
32 companiessubprocessor
Sending notifications emails to users and customers
Slack
128 companiessubprocessor
Internal communication

Developer Platform

Linear
33 companiessubprocessor
Product and engineering issue tracking

Uncategorized

C
Campfire
1 companiessubprocessor
Accounting and financial reporting

Changes

Updated Nov 10, 2026·Source

First capture

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