Merge
A unified API that gives a software product one normalized interface to many third-party systems in the same category.
Facts checked against primary sources on 6 August 2026.
Merge gives a software product a single API that reaches many third-party systems at once. A vendor builds against one normalized data model for a category, such as HR systems or applicant tracking, and Merge maps each underlying provider to it. Customers connect their own accounts through Merge Link, an embedded component that handles the authorization, and Merge then runs and monitors the syncs.
What separates it from other embedded platforms
The abstraction is at the category level, not the connector level. Instead of building one integration per provider, a vendor builds one integration per category and gets every provider in it. That removes most of the ongoing maintenance, because a change at a provider is Merge's problem rather than yours, and it makes coverage predictable when customers arrive with systems nobody planned for.
The cost of that abstraction is what it cannot express. A normalized model represents the fields common across providers, so anything specific to one system needs a passthrough request or falls outside the model. Merge is also read and write against defined objects rather than a workflow engine, so it does not replace a platform for building multi-step automations inside your product.
Who it fits
Software companies whose customers arrive with many different systems in the same category and expect the product to connect to whichever one they use. Named customers have included AngelList, Ramp, Apollo.io and Gem.
Ownership and company background
Shensi Ding and Gil Feig founded Merge in 2020, and the company works from San Francisco, New York and Berlin without naming one of them as a headquarters. It raised a $55 million Series B led by Accel announced on 24 October 2022, bringing disclosed funding to about $74.5 million, with NEA and Addition also investing. Series B is the last confirmed stage, and no acquisition or merger was found in this review. The company does not publish a current headcount, and the figures in the Series B announcement are now several years old.
Pricing
Published for the Unified product, and checked on 6 August 2026. The first three production linked accounts are free. Launch is $650 per month for up to 10 linked accounts, then $65 for each additional account. Professional and Enterprise are contract-priced. A linked account is one customer's connection to one third-party system, so the meter follows how many customers actually use an integration rather than how many integrations exist.
Integrations
Unified APIs covering categories including HR and payroll, applicant tracking, CRM, accounting, file storage and ticketing, with individual providers mapped behind each one.
Related iPaaS Tools
Cyclr
White-labelled integrations for your customers, priced on API calls and connectors rather than on seats
hotglue
White-label widget plus managed authentication and pipelines, metered on active customer tenants
maesn
Covers DATEV, Lexware and the rest of the European ERP landscape behind a single API, hosted in Germany