# Billproof

> Billproof is a free, evidence-first knowledge base for locating and understanding software billing records across 100 vendors. Invoice ingestion is in early access.

Billproof vendor records are sourced from official documentation, show last-verified dates, and distinguish direct connections from email/upload-only and guide-only support. No account is required to browse the public directory.

## Start here

- [Billproof](https://billproof.io/): Understand where recurring software spend lives and how Billproof helps recover the evidence.
- [Vendor integrations and billing capabilities](https://billproof.io/integrations): Browse 100 vendor records by category, support status, and retrieval method.
- [About Billproof and editorial standards](https://billproof.io/about): Learn how vendor claims are researched, verified, and kept separate from product availability.
- [Pricing](https://billproof.io/pricing): Review the capped founding-user offer, early-access price, included workflow, and current limitations.
- [Security](https://billproof.io/security): Review Billproof's current security posture, account-access model, and early-access boundaries.
- [XML sitemap](https://billproof.io/sitemap.xml): Find the complete machine-readable index of published public pages.

## Vendor categories

- [Cloud and infrastructure](https://billproof.io/integrations/cloud-infrastructure): Cloud platforms, hosting services, and infrastructure providers. Browse support status, access methods, and official billing sources.
- [Developer tools](https://billproof.io/integrations/developer-tools): Source control, observability, delivery, and software development services. Browse support status, access methods, and official billing sources.
- [Collaboration and productivity](https://billproof.io/integrations/collaboration): Communication, productivity, and workplace collaboration software. Browse support status, access methods, and official billing sources.
- [Sales and marketing](https://billproof.io/integrations/sales-and-marketing): Sales, customer support, marketing, and customer communication platforms. Browse support status, access methods, and official billing sources.
- [Finance and operations](https://billproof.io/integrations/finance-and-operations): Finance, payroll, data, communications, and operating systems. Browse support status, access methods, and official billing sources.

## Invoice retrieval guides

- [Find Amazon Web Services invoices](https://billproof.io/guides/find-aws-invoices): Retrieval steps, required role, formats, common problems, and official sources for Amazon Web Services.
- [Find Google Cloud invoices](https://billproof.io/guides/find-google-cloud-invoices): Retrieval steps, required role, formats, common problems, and official sources for Google Cloud.
- [Find Microsoft Azure invoices](https://billproof.io/guides/find-microsoft-azure-invoices): Retrieval steps, required role, formats, common problems, and official sources for Microsoft Azure.
- [Find Cloudflare invoices](https://billproof.io/guides/find-cloudflare-invoices): Retrieval steps, required role, formats, common problems, and official sources for Cloudflare.
- [Find Vercel invoices](https://billproof.io/guides/find-vercel-invoices): Retrieval steps, required role, formats, common problems, and official sources for Vercel.
- [Find GitHub invoices](https://billproof.io/guides/find-github-invoices): Retrieval steps, required role, formats, common problems, and official sources for GitHub.
- [Find GitLab invoices](https://billproof.io/guides/find-gitlab-invoices): Retrieval steps, required role, formats, common problems, and official sources for GitLab.
- [Find Atlassian invoices](https://billproof.io/guides/find-atlassian-invoices): Retrieval steps, required role, formats, common problems, and official sources for Atlassian.
- [Find Datadog invoices](https://billproof.io/guides/find-datadog-invoices): Retrieval steps, required role, formats, common problems, and official sources for Datadog.
- [Find Docker invoices](https://billproof.io/guides/find-docker-invoices): Retrieval steps, required role, formats, common problems, and official sources for Docker.
- [Find Slack invoices](https://billproof.io/guides/find-slack-invoices): Retrieval steps, required role, formats, common problems, and official sources for Slack.
- [Find Notion invoices](https://billproof.io/guides/find-notion-invoices): Retrieval steps, required role, formats, common problems, and official sources for Notion.
- [Find Zoom invoices](https://billproof.io/guides/find-zoom-invoices): Retrieval steps, required role, formats, common problems, and official sources for Zoom.
- [Find Google Workspace invoices](https://billproof.io/guides/find-google-workspace-invoices): Retrieval steps, required role, formats, common problems, and official sources for Google Workspace.
- [Find Microsoft 365 invoices](https://billproof.io/guides/find-microsoft-365-invoices): Retrieval steps, required role, formats, common problems, and official sources for Microsoft 365.
- [Find Dropbox invoices](https://billproof.io/guides/find-dropbox-invoices): Retrieval steps, required role, formats, common problems, and official sources for Dropbox.
- [Find Asana invoices](https://billproof.io/guides/find-asana-invoices): Retrieval steps, required role, formats, common problems, and official sources for Asana.
- [Find monday.com invoices](https://billproof.io/guides/find-monday-com-invoices): Retrieval steps, required role, formats, common problems, and official sources for monday.com.
- [Find Figma invoices](https://billproof.io/guides/find-figma-invoices): Retrieval steps, required role, formats, common problems, and official sources for Figma.
- [Find Canva invoices](https://billproof.io/guides/find-canva-invoices): Retrieval steps, required role, formats, common problems, and official sources for Canva.
- [Find Salesforce invoices](https://billproof.io/guides/find-salesforce-invoices): Retrieval steps, required role, formats, common problems, and official sources for Salesforce.
- [Find HubSpot invoices](https://billproof.io/guides/find-hubspot-invoices): Retrieval steps, required role, formats, common problems, and official sources for HubSpot.
- [Find Intercom invoices](https://billproof.io/guides/find-intercom-invoices): Retrieval steps, required role, formats, common problems, and official sources for Intercom.
- [Find Zendesk invoices](https://billproof.io/guides/find-zendesk-invoices): Retrieval steps, required role, formats, common problems, and official sources for Zendesk.
- [Find Mailchimp invoices](https://billproof.io/guides/find-mailchimp-invoices): Retrieval steps, required role, formats, common problems, and official sources for Mailchimp.
- [Find Stripe invoices](https://billproof.io/guides/find-stripe-invoices): Retrieval steps, required role, formats, common problems, and official sources for Stripe.
- [Find QuickBooks Online invoices](https://billproof.io/guides/find-quickbooks-online-invoices): Retrieval steps, required role, formats, common problems, and official sources for QuickBooks Online.
- [Find Xero invoices](https://billproof.io/guides/find-xero-invoices): Retrieval steps, required role, formats, common problems, and official sources for Xero.
- [Find Twilio invoices](https://billproof.io/guides/find-twilio-invoices): Retrieval steps, required role, formats, common problems, and official sources for Twilio.
- [Find Snowflake invoices](https://billproof.io/guides/find-snowflake-invoices): Retrieval steps, required role, formats, common problems, and official sources for Snowflake.
- [Find MongoDB Atlas invoices](https://billproof.io/guides/find-mongodb-atlas-invoices): Retrieval steps, required role, formats, common problems, and official sources for MongoDB Atlas.
- [Find OpenAI invoices](https://billproof.io/guides/find-openai-invoices): Retrieval steps, required role, formats, common problems, and official sources for OpenAI.
- [Find Anthropic invoices](https://billproof.io/guides/find-anthropic-invoices): Retrieval steps, required role, formats, common problems, and official sources for Anthropic.
- [Find Shopify invoices](https://billproof.io/guides/find-shopify-invoices): Retrieval steps, required role, formats, common problems, and official sources for Shopify.
- [Find Meta Ads invoices](https://billproof.io/guides/find-meta-ads-invoices): Retrieval steps, required role, formats, common problems, and official sources for Meta Ads.
- [Find Google Ads invoices](https://billproof.io/guides/find-google-ads-invoices): Retrieval steps, required role, formats, common problems, and official sources for Google Ads.
- [Find TikTok Ads invoices](https://billproof.io/guides/find-tiktok-ads-invoices): Retrieval steps, required role, formats, common problems, and official sources for TikTok Ads.
- [Find Rippling invoices](https://billproof.io/guides/find-rippling-invoices): Retrieval steps, required role, formats, common problems, and official sources for Rippling.
- [Find Deel invoices](https://billproof.io/guides/find-deel-invoices): Retrieval steps, required role, formats, common problems, and official sources for Deel.
- [Find DocuSign invoices](https://billproof.io/guides/find-docusign-invoices): Retrieval steps, required role, formats, common problems, and official sources for DocuSign.

## Structured data

- [Public vendor registry JSON](https://billproof.io/api/public/vendors.json): Retrieve the versioned, CORS-enabled dataset for all 100 vendor records.

## Optional

- [Robots policy](https://billproof.io/robots.txt): Review crawler access and the declared XML sitemap location.
- [Privacy notice](https://billproof.io/privacy): Review public-site data handling and privacy requests.
- [Website terms](https://billproof.io/terms): Review permitted use and limitations for the public knowledge base and structured dataset.