As of November 2026, Latka tracks 18 unified APIs software companies. They have combined revenues of $171.1M and employ 761 people. They have raised $288.4M and serve 15.6K customers combined.
Every company below sells unified APIs software to other businesses and is ranked by its most recent annual revenue. Revenue, funding, headcount and customer figures come from CEO interviews on the Latka podcast, public company filings, and Latka estimates where a company has not disclosed a number.
Unified APIs software refers to a category of application programming interfaces that consolidates multiple APIs into a single, standardized interface. This allows developers to interact with various software services more efficiently, minimizing the need for extensive coding and integration efforts. Common use cases include enabling seamless data exchange across platforms, simplifying access to complex APIs, and enhancing user experiences by providing streamlined functionality across different applications. The primary features of unified APIs typically involve abstraction layers that normalize data formats, unify authentication processes, and create a standard endpoint for various integrations. Typical user personas include software developers, integration specialists, and IT practitioners, who leverage these tools to simplify workflows and improve operational efficiencies across diverse systems. Companies looking to implement unified APIs benefit from quicker deployment times and reduced maintenance overhead, allowing them to focus on developing core functionalities and innovative solutions.
Sorting: Highest -> Lowest
Showing 10 of 18 companies ranked by annual revenue.
San Francisco, California, United States
Nylas provides an API platform that enables developers to quickly and securely access and process user data from any email and calendar.
San Francisco, California, United States
Finch allows applications to access data and make changes across payroll and HR systems through a single API.
San Francisco, California, United States
Merge is a San Francisco-based B2B software company that provides unified APIs, allowing software companies to offer dozens of integrations across HR, applicant tracking, accounting, and related categories through a single connection. Co-founded by Gil Feig and Shensi Ding-Lopez, the company launched out of stealth roughly two and a half to three months before this July 2021 interview, having spent the prior six months building its platform before adding any integrations. As of mid-2021, Merge had 280 organizations signed up on its platform, with 40 to 50 fully embedded and paying customers. The company raised a $4.5 million priced seed round from NEA, with Scott Sandell joining the board, and was targeting $1 million in ARR by the end of 2021, implying roughly $83,000 in monthly recurring revenue by December. With a 12-person team, the company was adding two to three new integrations per week and had processed hundreds of millions of API requests since launch. Merge competes in the integration infrastructure space and counts Flatfile as both a peer and a customer-facing partner, while distinguishing itself from horizontal tools like Zapier and Workato by offering vertical-specific, normalized data APIs built for enterprise-grade scale.
San Francisco, California, United States
Agave provides a unified API for data access across various construction software platforms. It operates as a Provider of API for integration of construction software.
London, England, United Kingdom
Supercharge your SaaS product's integrations in only a few days with our standardized unified APIs.
Nottingham, England, United Kingdom
Operator of a time organizing platform designed to offer calendar connectivity for enterprises. The company's time organizing platform offers a secure, real-time, two-way calendar integration without compromising your users' privacy to streamline shift planning, enabling users to manage paid time off.
Latka tracks 18 unified APIs software companies with reported revenue. Together they generate $171.1M in annual revenue and employ 761 people.
Nylas is the largest, with $75M in annual revenue, founded in 2013.
The average unified APIs software company in this list makes $9.5M a year, across 18 companies with reported revenue. They serve 15.6K customers combined.
Ranked by annual revenue, the leaders are Nylas, TryFinch, Merge, useagave.com and Terminal.
The 18 unified APIs software companies tracked here have raised $288.4M in disclosed funding between them.
- The software must provide a single interface for accessing multiple APIs. - It should enable data normalization and transformation across different applications. - The solution must simplify authentication processes for users. - It should support various integration scenarios, including real-time data access. - The product is not just an API management tool; it must offer comprehensive features for integration and data handling.
