Best Free Unified APIs of 2024

Boss Insights provides global leading access to business customers’ financial data with a single connection to accounting, banking, commerce, payroll, tax and more (i.e. Quickbooks, Stripe, SalesForce, etc.). It’s used by fintechs and neobanks to gain 60% increased automation, 100% automated scoring, 51% faster funding and 5x faster renewals.

All HR, payroll, recruiting and accounting platforms can be integrated using one API. Merge is the future's unified API. Merge is the unified API of the future. Once you integrate Merge, your product will be able to integrate with HR, payroll, and accounting platforms without additional work. Our drop-in component makes it easy to add integration authorization to your product. The intuitive interface and ease of linking accounts will be loved by your users. Integrations are easy with our accessible API design, simple SDKs, beautiful documentation, and painless integrations. Our logs, issue detection, alerts, and automated alerts will save your customer support team time, money and headaches. Forget maintenance - let your developers focus on building! Don't divert your engineers to yet more integrations. Let them get back to their work! All your integration issues can be managed from one place. No need for a therapist.

Our Accounting Data as a Service API allows you to connect to all major accounting service providers. You can quickly build and deploy your application with just a few lines code. Get more accurate and complete information about your customers for a fraction of the market price You can see what your customer sees directly from the source. A beautiful front-end module is available to collect accounting data from your customers in real time. It is optimized to optimize conversion rates. All major accounting software providers are supported. This allows you to access financial transactions, insights, and reports on your customers on-demand. Developers can begin within minutes and have their software deployed within hours. We created the easiest and fastest API to meet all your accounting data requirements.

It's easy to install tags, apps, and integrations on your site. You can also track your analytics with a simple API. You can update your stack to add or remove third-party integrations. You should not make any changes to your code. Every day, we add new integrations for you to test. Stackpile allows you to track customer events and analytics and has it sent automatically to all your connected apps and tools. It can be difficult to ensure that all third-party apps and integrations are updated with the latest version. Stackpile makes it easy. Our Unified Analytics API allows you to track custom events as well as user identifications. Stackpile saves time and development costs by sending data directly to all your integrations and apps without having to implement each API individually. Stackpile does not allow you to create a code snippet to install each of the integrations you wish to install. Stackpile allows you to install any of our tools, apps, and integrations in one click.

Our code-first platform and SaaS connectors eliminate the hassle of dealing with multiple APIs. Fusebit provides connectors for the most popular SaaS systems. We add connectors every week. Our code-first platform allows you to modify Fusebit connectors or add custom integrations to any other system. Fusebit allows you to connect to any system you choose! Developers like you can quickly add integrations into an application with our API building blocks. It eliminates the hassle of developing against multiple APIs and maintains the flexibility and familiarity that comes with a code-first platform. Fusebit is a solution to integrations, just like Stripe for developers.

We have been in business since 2010, and we've always supported our users. We work with you on building an API that will give your growing applications all the features they need. Our API returns results in less than one second. Your application can then continue processing while waiting for a response. By implementing multiple APIs, we help you save energy and time. After connecting to our single API, you can start building your application. We track all requests to allow you to debug API calls and make implementation easier. Production is the only environment available. You can use these URLs and sample code snippets. Please ensure that your application is capable of handling the characters.

You can integrate Google Calendar and Microsoft Outlook with a single API. You can also integrate Zoom and Google Meet in order to add conferencing capabilities to your calendar events. Our API can easily be integrated into your existing tech stack without installing any new dependencies. Use cURL, or any HTTP client you already use, to make API requests. Pyas can configure OAuth by simply providing a redirect URL to your app. Pyas uses this URL to redirect new users to your app when connecting new accounts. You can generate as many API Keys as you want. The keys are encrypted, and you can set an expiration date if you want to create temporary APIs. Start managing calendar events using your API keys.

The Precise API provides essential insights into the financial performance of business clients. This includes historical, real-time and forecasted data. The Precise API is compatible with all leading accounting platforms and offers real-time push-pull functionality. It's ideal for financial institutions, fintechs, and lenders who work with small to medium-sized business. Predict as a service is a powerful add-on to the Precise API that provides your clients with a premium white-label cash-flow forecasting and scenario-planning portal. Cash flow solution will keep your clients engaged with your brand and give them a reason to connect their business data.

Smartcar's vehicle-API allows you to track fleets, manage EV charging and issue digital keys. Smartcar allows mobility businesses to integrate apps and services into connected cars. Our simple and secure API allows you to easily retrieve vehicle data and trigger action. Track a vehicle’s location, verify the mileage, charge an electric vehicle, share a virtual keys, and more. Your customers can easily and instantly link their cars with your app using our Smartcar Connect flow. It only takes four clicks to link your app or mobile application. Our SDKs and documentation allow you to integrate our car API quickly with any tech stack.

Billions of people. Trillions of connections. One API. The Nylas APIs are powering applications with email, calendar and contacts that sync from any inbox around the globe. Nylas is the only company that provides an API for all email, calendar and contacts integrations. Contact records can be updated with missing information. A connection graph can make intros more warm. To create a single data source, combine data from each address book.

SaaS App Integrations made easy and fast Kloudless is an API Integration Platform that unifies endpoints across multiple SaaS APIs. This allows you to code once and integrate your app with many SaaS providers instantly. We have a deep understanding of 150+ APIs, so you don’t have to. We taught you how to communicate with and maintain over 150+ APIs. Our team can help you integrate your app with any SaaS app your customers use. Our Unified APIs allow you to code once and integrate many SaaS APIs with the same data models and endpoints. Our Unified APIs remove the differences between different SaaS APIs. This makes it easy to quickly build integrations and bring new features to market. We offer additional features such as real-time activity monitoring and prebuilt tools like File Picker and Crawler, which the SaaS provider does not offer.

Ship the integrations that your customers and prospects require now, and watch your revenue soar without compromising your core products. Deliver secure, deep, and powerful integrations with advanced observability features and security for all types of use cases. We never store any of your customer's data. You can also securely store their OAUTH2 access tokens in your AWS Secrets Manager accounts. OAUTH2 authentication keeps your customers' credentials safe while giving them the ability to revoke their access tokens at any time. Use your OAUTH2 client secrets and IDS to take control of branding and security. Your application will have full autonomy over authorization and access tokens. Avoid the headaches of juggling multiple APIs and complex data transforms. Simplify integration with a single API and data model.

Our developer-first platform is flexible and powerful enough to power your customer-facing integrations. Vessel handles billions of API requests and terabytes worth of data every day. Vessel is proud of its SOC2 compliance, which demonstrates our commitment to maintaining a high level of security and confidence in our operations. Data is encrypted both in transit and while at rest, using industry-standard protocols.