New
Announcing our $3.6m Seed Round

Build integrations like a modern SaaS company

The platform your engineers and customers will love for integrations with HRIS, ATS, LMS, CRM, & Marketing.
What your customers see
Connect your tools with Acme Inc
Featured
ADP Workforce Now
HRIS
Braze
Marketing
Bullhorn
ATS
Hubspot CRM
CRM
Lever
ATS
Microsoft Dynamics 365
CRM
Oracle HCM HR
HRIS
SAP SuccessFactors
HRIS
UKG Pro
HRIS
Workday
ATS
Workday
HRIS
Integrations
ADP Workforce Now
HRIS
Airship
Marketing
Ashby
ATS
Attio
CRM
BambooHR
HRIS
Braze
Marketing
Breathe
HRIS
Bullhorn
ATS
Bullhorn
CRM
CharlieHR
HRIS
Employment Hero
HRIS
Freshteam
HRIS
Greenhouse
ATS
Gusto
HRIS
HR Cloud
HRIS
HaileyHR
HRIS
Hibob
HRIS
HubSpot Marketing
Marketing
Hubspot CRM
CRM
Humaans
HRIS
JazzHR
ATS
Klaviyo
Marketing
Lever
ATS
Microsoft Dynamics 365
CRM
Oracle HCM HR
HRIS
Personio
HRIS
Pinpoint
ATS
Pipedrive
CRM
Recruitee
ATS
SAP SuccessFactors
ATS
SAP SuccessFactors
HRIS
Sage HR
HRIS
Salesforce
CRM
SmartRecruiters
ATS
TeamTailor
ATS
UKG Pro
HRIS
UKG Ready
HRIS
Vibes
Marketing
Workable
ATS
Workday
ATS
Workday
HRIS
Zelt
HRIS
Zoho CRM
CRM
Integrations
Ashby
ATS
Bullhorn
ATS
Greenhouse
ATS
JazzHR
ATS
Lever
ATS
Pinpoint
ATS
Recruitee
ATS
SAP SuccessFactors
ATS
SmartRecruiters
ATS
TeamTailor
ATS
Workable
ATS
Workday
ATS
Integrations
Attio
CRM
Bullhorn
CRM
Hubspot CRM
CRM
Microsoft Dynamics 365
CRM
Pipedrive
CRM
Salesforce
CRM
Zoho CRM
CRM
Integrations
ADP Workforce Now
HRIS
BambooHR
HRIS
Breathe
HRIS
CharlieHR
HRIS
Employment Hero
HRIS
Freshteam
HRIS
Gusto
HRIS
HR Cloud
HRIS
HaileyHR
HRIS
Hibob
HRIS
Humaans
HRIS
Oracle HCM HR
HRIS
Personio
HRIS
SAP SuccessFactors
HRIS
Sage HR
HRIS
UKG Pro
HRIS
UKG Ready
HRIS
Workday
HRIS
Zelt
HRIS
Integrations
Airship
Marketing
Braze
Marketing
HubSpot Marketing
Marketing
Klaviyo
Marketing
Vibes
Marketing
Terms
|
Privacy
Backed by exceptional founders and investors at:
Unified APIs

We standardize hundreds of APIs so you don’t have to

Dozens of integrations in hours
Add dozens of integrations at once to your product.
Constantly add new Integrations
Add new integrations in 1 click to your product.
Solve all your integration problems
Leverage pre-built components to make integrations a breeze.
“I wish this had existed 5 years ago when I built Screenloop”
Romain Sestier
|
Founder, Screenloop
Unified APIs

We standardize APIs so you don’t have to

Save Resources
Integrate with an entire industry at once
Our pre-mapped Unified APIs plug your app into entire categories of tools your customers use.
ATS
+10
+7
+25
+9
ATS
CRM
HRIS
MKT
Your SaaS
Expand Product
Expand your integrations
New connectors take 1 click to enable as they come pre-mapped to our Unified APIs.
Bullhorn
New
HubSpot
Pinpoint
Airship
New
Easily Scale
Launch. Fast.
StackOne includes all you need to build, test, ship, and monitor your integrations.
Connect your tools with Acme Inc
Integrations
Airship
Marketing
Breathe
HRIS
Employment Hero
HRIS
Microsoft Dynamics 365
CRM
Recruitee
ATS
Salesforce
CRM
Vibes
Marketing
Zoho CRM
CRM
Terms
|
Privacy
Dozens of integrations in hours
Add dozens of integrations at once to your product.
Constantly add new Integrations
Add new integrations in 1 click to your product.
Solve all your integration problems
Leverage pre-built components to make integrations a breeze.
“I wish this had existed 5 years ago when I built Screenloop”
Romain Sestier
|
Founder, Screenloop
Why StackOne

Enterprise-Ready Integration Platform

All the tools you need to build real-time integrations, at scale, with best-in-class security & privacy.
Read and Write in real time
StackOne translates your API calls directly to your customers’ tools. No sync delays.
Stay in control of your customers’ data
Unlike other platforms, we never store your customers’ PII, and can process it in any region.
Private & Secure
Read and Write in real time
StackOne translates your API calls directly to your customers’ tools. No sync delays.
Stay in control of your customers’ data
Unlike other platforms, we never store your customers’ PII, and can process it in any region.
Customize for any use-case
StackOne lets you create your own unified fields, and handle any of your customers' set-up.
Read and Write in real time
StackOne translates your API calls directly to your customers’ tools. No sync delays.
Stay in control of your customers’ data
Unlike other platforms, we never store your customers’ PII, and can process it in any region.
Handle even the most complex integrations
Use pre-built infrastructure to customize connectors and custom field mappings.
Real-Time
Read and Write in real time.
StackOne translates your API calls directly to your customers’ tools.
Private & Secure
Stay in control of your customers’ data.
Unlike other integration platforms, StackOne never stores your customers’ PII, and can process it in any region.
Customizable
Handle even the most complex integrations.
Use pre-built infrastructure to customize connectors and customer field mappings easily.
Our Customers

Product teams love building with StackOne

Rated 5/5 Stars
StackOne is a game-changer – we launched 6 enterprise HRIS integrations in a few weeks. It is the only platform we tested that enabled us to customize the unified API to fit our use-case across so many integrations. And the real-time API makes reading and writing much easier than other tools that have a sync delay.
Anthony Petane
|
Director of Product, Localyze
StackOne has made launching new integrations much faster, and it only took a few days to implement. The documentation and support are amazing, and I’m impressed by how quickly the team are building new features!
Klaus Julin
|
CTO, Introist
The experience with StackOne has been phenomenal. The product is easy to use for our technical team, the support is world-class and the team is incredibly responsive to our growing needs. I’m delighted that we bet on them for such a critical part of our infrastructure.
Sam Dhesi
|
CEO, Popp
StackOne has become a crucial part of our integration strategy. We wanted to augment our existing optimization integrations with a new hub that gives us broader reach and puts us at the core of our enterprise customers' content workflows without the pain of building them all in-house.
Jasper Pye
|
CTO, Phrasee
Rated 5/5 Stars
Our Users

Product teams love building with StackOne

Rated 5/5 Stars
StackOne is a game-changer – we launched 6 enterprise HRIS integrations in a few weeks. It is the only platform we tested that enabled us to customize the unified API to fit our use-case across so many integrations. And the real-time API makes reading and writing much easier than other tools that have a sync delay.
Anthony Petane
|
Director of Product, Localyze
StackOne has made launching new integrations much faster, and it only took a few days to implement. The documentation and support are amazing, and I’m impressed by how quickly the team are building new features!
Klaus Julin
|
CTO, Introist
StackOne powers the majority of Screenloop’s ATS integrations. It’s the best platform to support reading and writing a high number of data points across a lot of integrations. Our time to release a new integration dropped significantly and there is no data stored on their end. And the support is awesome!
Rodrigo Santos
|
CTO, Screenloop
The experience with StackOne has been phenomenal. The product is easy to use for our technical team, the support is world-class and the team is incredibly responsive to our growing needs. I’m delighted that we bet on them for such a critical part of our infrastructure.
Sam Dhesi
|
CEO, Popp
StackOne has become a crucial part of our integration strategy. We wanted to augment our existing optimization integrations with a new hub that gives us broader reach and puts us at the core of our enterprise customers' content workflows without the pain of building them all in-house.
Jasper Pye
|
CTO, Phrasee
We’ve seen major improvements in data quality since we migrated to StackOne from another integration platform that was not real time (since StackOne always reads from the source of truth). The transition was super easy thanks to the support from the StackOne team!
Alex Santos
|
CTO, Reachdesk
Rated 5/5 Stars
The Platform

Why learn to speak every API’s language?

StackOne translates API calls in real-time via pre-mapped unified APIs so you only have to build once to integrate with entire category of tools.
The Hub

Embed straight into your SaaS, seamlessly.

StackOne automatically translates your API calls via pre-mapped unified APIs so you only have to build one native integration to add hundreds to your.
What’s included

StackOne comes pre-loaded with...

50+ Integrations and counting
Unlimited API Calls to providers
30+ Data Models to interact with
3,000+ API fields pre-mapped
40+ Sandbox Accounts to access
What’s included

StackOne comes pre-loaded with...

StackOne automatically translates your API calls via pre-mapped.
50+ integrations and counting
Unlimited API Calls to providers
30+ Data Models to interact with
3,000+ API fields pre-mapped
40+ Sandbox Accounts to access
What’s included

StackOne comes pre-loaded with...

50+ Integrations and counting
Unlimited API Calls to providers
30+ Data Models to interact with
3,000+ API fields pre-mapped
40+ Sandbox Accounts to access
What’s included

StackOne comes pre-loaded with...

StackOne automatically translates your API calls via pre-mapped.
50+ integrations and counting
Unlimited API Calls to providers
30+ Data Models to interact with
3,000+ API fields pre-mapped
40+ Sandbox Accounts to access
Security & Privacy

Certified, Secure, Private.

StackOne is privacy-first. It's the only embedded integration platform that never stores your customers' data by default.
Integrations

50+ Integrations

Featured
ADP Workforce Now
HRIS
Braze
Marketing
Bullhorn
ATS
Hubspot CRM
CRM
Lever
ATS
Microsoft Dynamics 365
CRM
Oracle HCM HR
HRIS
SAP SuccessFactors
HRIS
UKG Pro
HRIS
Workday
ATS
Workday
HRIS
Featured
|
Ashby
ATS
|
Bullhorn
ATS
|
Greenhouse
ATS
|
JazzHR
ATS
|
Lever
ATS
|
Pinpoint
ATS
|
Recruitee
ATS
|
SAP SuccessFactors
ATS
Featured
|
Attio
CRM
|
Bullhorn
CRM
|
Hubspot CRM
CRM
|
Microsoft Dynamics 365
CRM
|
Pipedrive
CRM
|
Salesforce
CRM
|
Zoho CRM
CRM
Featured
|
ADP Workforce Now
HRIS
|
BambooHR
HRIS
|
Breathe
HRIS
|
CharlieHR
HRIS
|
Employment Hero
HRIS
|
Freshteam
HRIS
|
Gusto
HRIS
|
HR Cloud
HRIS
Featured
|
Airship
Marketing
|
Braze
Marketing
|
HubSpot Marketing
Marketing
|
Klaviyo
Marketing
|
Vibes
Marketing
Resources

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Credits
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