Who uses what — and who's switching

A company's stack leaks into public data: its email/DNS providers in DNS records, and the SaaS tools it names across its job postings. We snapshot both and diff them over time, so each page below shows the companies currently on a tool and the ones that just adopted or dropped it — a switching feed nobody else publishes.

• Google Workspace
  email platform / email sender
  241 companies · 29 recent changes
• Salesforce
  CRM
  154 companies · 28 recent changes
• Anthropic
  AI
  130 companies · 34 recent changes
• HubSpot
  CRM
  114 companies · 50 recent changes
• Kubernetes
  container orchestration
  105 companies · 28 recent changes
• AWS Route 53
  DNS provider
  101 companies · 16 recent changes
• Cloudflare
  DNS provider
  95 companies · 1 recent changes
• Terraform
  infrastructure as code
  88 companies · 34 recent changes
• GitHub
  developer platform
  87 companies · 39 recent changes
• Segment
  customer data platform
  82 companies · 36 recent changes
• Looker
  BI
  73 companies · 40 recent changes
• Tableau
  BI
  68 companies · 41 recent changes
• dbt
  data transformation
  67 companies · 39 recent changes
• Snowflake
  data warehouse
  67 companies · 24 recent changes
• NetSuite
  ERP
  59 companies · 40 recent changes
• Figma
  design
  58 companies · 37 recent changes
• Workday
  HR & finance
  56 companies · 37 recent changes
• Jira
  project management
  54 companies · 40 recent changes
• Kafka
  event streaming
  53 companies · 27 recent changes
• Datadog
  observability
  51 companies · 28 recent changes
• BigQuery
  data warehouse
  49 companies · 24 recent changes
• Airflow
  data orchestration
  45 companies · 29 recent changes
• SendGrid
  email platform / email sender
  44 companies · 6 recent changes
• Databricks
  data platform
  43 companies · 15 recent changes
• Okta
  identity
  41 companies · 31 recent changes
• Grafana
  observability
  39 companies · 24 recent changes
• Zendesk
  customer support
  39 companies · 22 recent changes
• OpenAI
  AI
  38 companies · 26 recent changes
• Marketo
  marketing automation
  36 companies · 24 recent changes
• Mailgun
  email platform / email sender
  35 companies · 2 recent changes
• Stripe
  payments
  35 companies · 22 recent changes
• Amazon SES
  email platform / email sender
  29 companies · 3 recent changes
• Power BI
  BI
  29 companies · 30 recent changes
• LangChain
  AI
  27 companies · 12 recent changes
• Mailchimp
  email marketing
  25 companies · 4 recent changes
• Google
  DNS provider
  23 companies · 14 recent changes
• Confluence
  knowledge base
  22 companies · 17 recent changes
• Amplitude
  product analytics
  20 companies · 14 recent changes
• Mandrill
  email sender
  20 companies · 4 recent changes
• MongoDB
  database
  19 companies · 11 recent changes
• Workato
  integration
  19 companies · 8 recent changes
• GitLab
  developer platform
  18 companies · 14 recent changes
• Zapier
  automation
  18 companies · 14 recent changes
• Spark
  big data
  17 companies · 11 recent changes
• Salesloft
  sales engagement
  16 companies · 10 recent changes
• Braze
  customer engagement
  15 companies · 10 recent changes
• Microsoft 365
  email platform / email sender
  15 companies · 2 recent changes
• Elasticsearch
  search
  14 companies · 17 recent changes
• ServiceNow
  ITSM
  14 companies · 9 recent changes
• Shopify
  ecommerce
  14 companies · 4 recent changes
• Metabase
  BI
  13 companies · 4 recent changes
• Intercom
  customer support
  9 companies · 7 recent changes
• New Relic
  observability
  9 companies · 11 recent changes
• Mixpanel
  product analytics
  8 companies · 4 recent changes
• PagerDuty
  incident management
  8 companies · 6 recent changes
• Zuora
  subscription billing
  7 companies · 8 recent changes
• Adyen
  payments
  6 companies · 3 recent changes
• Customer.io
  customer engagement
  6 companies · 6 recent changes
• Outreach
  sales engagement
  6 companies · 3 recent changes
• Pinecone
  vector database
  6 companies · 2 recent changes
• PostHog
  product analytics
  6 companies · 3 recent changes
• Freshdesk
  customer support
  4 companies · 2 recent changes
• Klaviyo
  email marketing
  4 companies · 1 recent changes
• Weaviate
  vector database
  4 companies · 1 recent changes
• Auth0
  identity
  3 companies · 2 recent changes
• Pardot
  marketing automation
  2 companies · 4 recent changes
• Proofpoint
  email platform / email sender
  2 companies · 4 recent changes