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
  312 companies · 28 recent changes
• Salesforce
  CRM
  166 companies · 25 recent changes
• Anthropic
  AI
  145 companies · 42 recent changes
• AWS Route 53
  DNS provider
  142 companies · 16 recent changes
• HubSpot
  CRM
  129 companies · 54 recent changes
• Cloudflare
  DNS provider
  120 companies
• Kubernetes
  container orchestration
  120 companies · 32 recent changes
• Terraform
  infrastructure as code
  104 companies · 38 recent changes
• GitHub
  developer platform
  99 companies · 45 recent changes
• Segment
  customer data platform
  82 companies · 34 recent changes
• Looker
  BI
  70 companies · 40 recent changes
• Figma
  design
  69 companies · 41 recent changes
• Snowflake
  data warehouse
  68 companies · 29 recent changes
• Kafka
  event streaming
  66 companies · 32 recent changes
• Jira
  project management
  65 companies · 49 recent changes
• Tableau
  BI
  64 companies · 39 recent changes
• dbt
  data transformation
  62 companies · 41 recent changes
• Airflow
  data orchestration
  57 companies · 33 recent changes
• NetSuite
  ERP
  57 companies · 36 recent changes
• SendGrid
  email platform / email sender
  54 companies · 4 recent changes
• Workday
  HR & finance
  54 companies · 34 recent changes
• Amazon SES
  email platform / email sender
  51 companies · 3 recent changes
• Mailgun
  email platform / email sender
  50 companies · 1 recent changes
• Databricks
  data platform
  47 companies · 20 recent changes
• Marketo
  marketing automation
  47 companies · 27 recent changes
• OpenAI
  AI
  47 companies · 24 recent changes
• Datadog
  observability
  46 companies · 23 recent changes
• BigQuery
  data warehouse
  44 companies · 22 recent changes
• Zendesk
  customer support
  43 companies · 28 recent changes
• Grafana
  observability
  40 companies · 18 recent changes
• Okta
  identity
  35 companies · 33 recent changes
• Stripe
  payments
  34 companies · 17 recent changes
• Mailchimp
  email marketing
  30 companies · 3 recent changes
• LangChain
  AI
  29 companies · 12 recent changes
• Google
  DNS provider
  28 companies · 14 recent changes
• Power BI
  BI
  28 companies · 22 recent changes
• Workato
  integration
  27 companies · 18 recent changes
• Confluence
  knowledge base
  26 companies · 21 recent changes
• Zapier
  automation
  25 companies · 18 recent changes
• Mandrill
  email sender
  24 companies · 3 recent changes
• Spark
  big data
  20 companies · 11 recent changes
• Amplitude
  product analytics
  19 companies · 14 recent changes
• MongoDB
  database
  18 companies · 12 recent changes
• GitLab
  developer platform
  17 companies · 13 recent changes
• Intercom
  customer support
  17 companies · 11 recent changes
• Microsoft 365
  email platform / email sender
  17 companies · 2 recent changes
• Elasticsearch
  search
  15 companies · 15 recent changes
• Metabase
  BI
  14 companies · 8 recent changes
• Salesloft
  sales engagement
  14 companies · 7 recent changes
• ServiceNow
  ITSM
  14 companies · 13 recent changes
• Shopify
  ecommerce
  14 companies · 2 recent changes
• PagerDuty
  incident management
  11 companies · 6 recent changes
• Braze
  customer engagement
  10 companies · 6 recent changes
• Mixpanel
  product analytics
  9 companies · 5 recent changes
• Zuora
  subscription billing
  9 companies · 5 recent changes
• NS1
  DNS provider
  8 companies
• Proofpoint
  email platform / email sender
  8 companies
• Azure DNS
  DNS provider
  6 companies
• New Relic
  observability
  6 companies · 5 recent changes
• Outreach
  sales engagement
  6 companies · 4 recent changes
• Pinecone
  vector database
  6 companies · 3 recent changes
• PostHog
  product analytics
  6 companies · 3 recent changes
• Customer.io
  customer engagement
  4 companies · 4 recent changes
• Freshdesk
  customer support
  4 companies · 4 recent changes
• Klaviyo
  email marketing
  4 companies · 2 recent changes
• Pendo
  product analytics
  4 companies · 4 recent changes
• Weaviate
  vector database
  4 companies · 2 recent changes
• Adyen
  payments
  3 companies · 2 recent changes
• Auth0
  identity
  3 companies · 3 recent changes