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Who Uses What

Real tech stacks from real companies. Sourced from repos, blogs, and job pages.

154
Companies
110
Unique tools
47
Industries
Filter by tool:
VercelDeveloper Tools
300+ employees
Source: Jobs page & blog posts
SupabaseDeveloper Tools
100+ employees
Source: Blog & open source repos
LinearProductivity
80+ employees
Source: Tech blog & conference talks
NotionProductivity
500+ employees
Source: Engineering blog
ResendDeveloper Tools
20+ employees
Source: Founder tweets & docs
Cal.comScheduling
50+ employees
Source: Open source repo
Dub.coMarketing
10+ employees
Source: Open source repo
PlausibleAnalytics
20+ employees
Source: Open source repo & blog
Lemon SqueezyPayments
30+ employees
Source: Job listings & blog
MintlifyDeveloper Tools
30+ employees
Source: Docs & open source
ClerkDeveloper Tools
150+ employees
Source: Jobs page & engineering blog
HashnodeContent Platform
80+ employees
Source: Engineering blog
ReplicateAI Infrastructure
60+ employees
Source: Jobs page & OSS
TursoDatabase
30+ employees
Source: Blog & conference talks
Trigger.devDeveloper Tools
20+ employees
Source: Open source repo
MiddayFintech
5+ employees
Source: Open source repo (fully open)
RaycastDeveloper Tools
50+ employees
Source: Jobs page & engineering blog
FigmaDesign Tools
1000+ employees
Source: Engineering blog & conference talks
ShopifyE-commerce
10000+ employees
Source: Engineering blog & Shopify Unite talks
PostHogAnalytics
60+ employees
Source: Open source repo & handbook
StripePayments
8000+ employees
Source: Engineering blog & conference talks
Fly.ioDeveloper Tools
50+ employees
Source: Engineering blog & open source repos
RailwayDeveloper Tools
30+ employees
Source: Blog & GraphQL API docs
InngestDeveloper Tools
20+ employees
Source: Open source repo & docs
NeonDatabase
100+ employees
Source: Engineering blog & conference talks
ConvexDeveloper Tools
40+ employees
Source: Blog & open source client
Payload CMSDeveloper Tools
30+ employees
Source: Open source repo
UploadthingDeveloper Tools
10+ employees
Source: Open source repo & Theo's streams
GitLabDeveloper Tools
2000+ employees
Source: Open source repo & handbook
HashicorpInfrastructure
2000+ employees
Source: Open source repos & engineering blog
SanityCMS
150+ employees
Source: Engineering blog & open source studio
GhostPublishing
30+ employees
Source: Open source repo
AppwriteDeveloper Tools
50+ employees
Source: Open source repo & blog
DopplerSecurity
80+ employees
Source: Blog & job listings
HoneycombObservability
200+ employees
Source: Engineering blog & conference talks
BetterStackObservability
50+ employees
Source: Blog & product changelog
InfisicalSecurity
20+ employees
Source: Open source repo
TwilioCommunication
5000+ employees
Source: Engineering blog & conference talks
DigitalOceanCloud
1000+ employees
Source: Engineering blog & open source repos
HasuraDeveloper Tools
100+ employees
Source: Open source repo & blog
ContentfulCMS
500+ employees
Source: Engineering blog & job listings
ChecklyMonitoring
40+ employees
Source: Blog & open source CLI
StrapiCMS
60+ employees
Source: Open source repo & blog
MongoDBDatabase
5000+ employees
Source: Engineering blog & conference talks
AnthropicAI
500+ employees
Source: Jobs page & engineering blog
CursorDeveloper Tools
100+ employees
Source: Blog & job listings
FormbricksDeveloper Tools
20+ employees
Source: Open source repo
LagoBilling
30+ employees
Source: Open source repo & blog
DocumensoDeveloper Tools
15+ employees
Source: Open source repo
Twenty CRMCRM
20+ employees
Source: Open source repo
HyperswitchPayments
50+ employees
Source: Open source repo & blog
ErxesCRM
40+ employees
Source: Open source repo
BiomeDeveloper Tools
10+ employees
Source: Open source repo & governance docs
AxiomObservability
40+ employees
Source: Blog & job listings
RenderDeveloper Tools
80+ employees
Source: Blog & job listings
RetoolDeveloper Tools
400+ employees
Source: Jobs page & engineering blog
WorkosDeveloper Tools
100+ employees
Source: Blog & job listings
UpstashDatabase
20+ employees
Source: Blog & open source SDKs
MeilisearchSearch
50+ employees
Source: Open source repo & blog
PocketbaseDeveloper Tools
5+ employees
Source: Open source repo
DenoDeveloper Tools
40+ employees
Source: Open source repo & blog
PlanetscaleDatabase
80+ employees
Source: Engineering blog & conference talks
CoolifyDeveloper Tools
5+ employees
Source: Open source repo
DrizzleDeveloper Tools
10+ employees
Source: Open source repo & blog
LoopsEmail Marketing
15+ employees
Source: Blog & founder posts
DiscordCommunication
900+ employees
Source: Engineering blog (1T messages on ScyllaDB post)
Anthropic (Claude.ai)AI
1500+ employees
Source: Jobs page & engineering blog
LovableAI App Builder
30+ employees
Source: Founder talks & integrations docs
Bolt.new (StackBlitz)AI App Builder
50+ employees
Source: Engineering blog & product changelog
ModalAI Compute
30+ employees
Source: Jobs page & engineering blog
PolarPayments
10+ employees
Source: Open source repo
TinybirdAnalytics
70+ employees
Source: Engineering blog & job listings
LiveblocksRealtime
30+ employees
Source: Blog & open source SDKs
PlainCustomer Support
20+ employees
Source: Engineering blog & API docs
KnockNotifications
30+ employees
Source: Engineering blog & job listings
VapiAI Voice
30+ employees
Source: Job listings & API docs
ElevenLabsAI Audio
200+ employees
Source: Engineering blog & job listings
Browser Company (Arc/Dia)Browsers
100+ employees
Source: Job listings & founder talks
Perplexity AIAI Search
200+ employees
Source: Job listings & engineering blog
Linear (self)Developer Tools
80+ employees
Source: Tech blog & public architecture talks
BrexFintech
1000+ employees
Source: Engineering blog & conference talks
Vercel (product)Developer Tools
300+ employees
Source: Open source repos & engineering blog
Pika LabsAI Video
50+ employees
Source: Job listings & product integrations
Loom (Atlassian)Video Messaging
300+ employees
Source: Engineering blog & job listings
ReflectNote Taking
10+ employees
Source: Founder talks & product changelog
DescriptAI Audio/Video
200+ employees
Source: Engineering blog & job listings
ReplitDeveloper Tools
300+ employees
Source: Engineering blog & open source repos
Zed IndustriesDeveloper Tools
30+ employees
Source: Open source repo & engineering blog
WarpDeveloper Tools
80+ employees
Source: Engineering blog & job listings
GitpodDeveloper Tools
100+ employees
Source: Open source repo & engineering blog
Airplane.dev (Airtable)Internal Tools
60+ employees
Source: Blog & job listings (acquired by Airtable 2023)
Supabase (product)Developer Tools
100+ employees
Source: Open source repos & engineering blog
Fathom AnalyticsAnalytics
10+ employees
Source: Founder blog posts & open source privacy work
Raycast (internal tools)Developer Tools
50+ employees
Source: Blog & Raycast extensions store
RevolutFintech
8000+ employees
Source: Engineering blog & job listings
WiseFintech
5000+ employees
Source: Engineering blog & conference talks
MonzoFintech
3000+ employees
Source: Engineering blog & Monzo Making Money talks
N26Fintech
1500+ employees
Source: Engineering blog & job listings
RobinhoodFintech
3000+ employees
Source: Engineering blog & conference talks
PlaidFintech
1000+ employees
Source: Engineering blog & job listings
Oscar HealthHealthcare
3000+ employees
Source: Engineering blog & job listings
RoHealthcare
800+ employees
Source: Engineering blog & job listings
Hims & HersHealthcare
1000+ employees
Source: Job listings & SEC filings
Devoted HealthHealthcare
1500+ employees
Source: Job listings & engineering talks
FlexportLogistics
3000+ employees
Source: Engineering blog & conference talks
ConvoyLogistics
800+ employees
Source: Engineering blog & job listings (pre-shutdown)
ShipBobLogistics
1000+ employees
Source: Job listings & engineering talks
BigCommerceE-commerce
1500+ employees
Source: Engineering blog & job listings
SpotifyMedia
10000+ employees
Source: Engineering blog & Backstage open source
NetflixMedia
12000+ employees
Source: Netflix Tech Blog & open source projects
OpenAIAI
2000+ employees
Source: Job listings & engineering blog
MidjourneyAI
100+ employees
Source: Job listings & Discord community
Stability AIAI
200+ employees
Source: Open source repos & job listings
GitHubDeveloper Tools
3000+ employees
Source: GitHub Blog & The ReadME Project
JetBrainsDeveloper Tools
2000+ employees
Source: Engineering blog & Kotlin conf talks
DatadogObservability
5000+ employees
Source: Engineering blog & conference talks
CloudflareInfrastructure
4000+ employees
Source: Engineering blog & open source (Pingora, Workers runtime)
Grafana LabsObservability
1000+ employees
Source: Open source repos & engineering blog
TwitchMedia
2500+ employees
Source: Engineering blog & GoCon talks
CoinbaseFintech
3500+ employees
Source: Engineering blog & open source repos
CanvaDesign Tools
4000+ employees
Source: Engineering blog & conference talks
AtlassianDeveloper Tools
10000+ employees
Source: Engineering blog & AtlasCamp talks
UberLogistics
30000+ employees
Source: Engineering blog & open source (Cadence, Peloton)
Square (Block)Fintech
12000+ employees
Source: Engineering blog & Square Corner Blog
PerplexityAI Search
200+ employees
Source: Job listings & tech talks
CursorDeveloper Tools
60+ employees
Source: GitHub repos & job listings
MidjourneyAI/Creative
80+ employees
Source: Job postings & community discussions
ResendDeveloper Tools
30+ employees
Source: Open source & blog
Cal.comScheduling
80+ employees
Source: Open source repo (calcom/cal.com)
DubDeveloper Tools
15+ employees
Source: Open source repo (dubinc/dub)
Trigger.devDeveloper Tools
25+ employees
Source: Open source repo & blog
NovuDeveloper Tools
40+ employees
Source: Open source repo (novuhq/novu)
AnthropicAI
1000+ employees
Source: Job listings & API documentation
Payload CMSDeveloper Tools
30+ employees
Source: Open source repo (payloadcms/payload)
MintlifyDeveloper Tools
30+ employees
Source: Product page & job listings
InfisicalSecurity
25+ employees
Source: Open source repo (Infisical/infisical)
LangfuseAI/ML
20+ employees
Source: Open source repo (langfuse/langfuse)
OpenStatusDeveloper Tools
5+ employees
Source: Open source repo (openstatusHQ/openstatus)
DocumensoSaaS
15+ employees
Source: Open source repo (documenso/documenso)
LagoFintech
30+ employees
Source: Open source repo (getlago/lago)
Highlight.ioDeveloper Tools
20+ employees
Source: Open source repo (highlight/highlight)
Mistral AIAI
600+ employees
Source: Job listings & API docs
GroqAI Infrastructure
200+ employees
Source: Job listings & developer docs
PolarDeveloper Tools
15+ employees
Source: Open source repo (polarsource/polar)
PapermarkSaaS
10+ employees
Source: Open source repo (mfts/papermark)
ArcjetSecurity
15+ employees
Source: Open source repo & job listings
UnkeyDeveloper Tools
10+ employees
Source: Open source repo (unkeyed/unkey)
TinybirdData/Analytics
80+ employees
Source: Blog & job listings
HankoSecurity
20+ employees
Source: Open source repo (teamhanko/hanko)
Stack AuthDeveloper Tools
10+ employees
Source: Open source repo (stack-auth/stack)
Hono (Cloudflare)Developer Tools
Used by Cloudflare teams employees
Source: Cloudflare blog & Hono docs
Supabase (uses Hono)Developer Tools
100+ employees
Source: Supabase Edge Functions documentation
Vercel (uses Turso)Developer Tools
300+ employees
Source: Turso case study & Vercel templates
LoopsSaaS/Email
15+ employees
Source: Product page & job listings

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