Best Free Unified APIs

Plaid is a global data network that powers the tools millions of people rely on to live a healthier financial life. Our ambition is to facilitate a more inclusive, competitive, and mutually beneficial financial system by simplifying payments, revolutionizing lending, and leading the fight against fraud. Plaid works with over 8,000 companies including fintechs like Venmo and SoFi, several of the Fortune 500, and many of the largest banks to empower people with more choice and control over how they manage their money. Headquartered in San Francisco, Plaid’s network spans over 12,000 institutions across the US, Canada, UK and Europe.

Boss Insights’ platform digitizes lending to grow relationships between banks and their business clients. Thanks to Amazon style advancement, there is a growing divide between lenders’ service and businesses’ expectations. Banks excel in regulation, however, operate with limited information on their business clients (out of date and gathered manually). Boss Insights’ API hub empowers lenders to bridge the divide. APIs are the most efficient way to digitize existing processes enabling accelerated service and a complete view in real time. The platform is used to accelerate SBA, SMB and Commercial Lending from months to minutes. It also supports cross-selling products empowering banks and credit unions to proactively serve customers.

One API to integrate with all HR, payroll, recruiting, and accounting platforms. Merge is the unified API of the future. Integrate once with Merge and your product will have integrations with HR, payroll, recruiting, and accounting platforms with no additional work. Our drop-in component makes adding integration authorization to your product a walk in the park. Your users will love the intuitive interface and how easy it is to link their accounts. We make integrations painless with accessible API design, dead-simple SDKs, and beautiful documentation that we agonize over. Let our logs, issue detection, and automated alerts save your customer success team time, money, and headaches. Forget maintenance - let your developers focus on building! Stop diverting your engineers to yet another integration and let them get back to work. Manage your simplified integration issues in a single pane. No therapist required.

We make it easy to install apps, tags, and integrations on your website and track your analytics using a simple unified API. Add or remove new 3rd party integrations by updating your stack. Not making changes to your code. We're adding new integrations every day for you to try. Track your customer events data and analytics with Stackpile and have it automatically sent to all your connected apps, tools and integrations. Making sure all your 3rd party apps and integrations are up to date with the latest version can be a pain. With Stackpile we do that for you. Use our Unified Analytics API to track custom events and user identifications. Stackpile allows you to save time and development costs by sending data to all your apps and integrations without implementing each API separately. Without Stackpile you need to implement a code snippet for each integrations you want to install. After adding Stackpile you can install any of our supported apps, tools and integrations with one click.

Our code-first integration platform and SaaS connectors remove the headaches of dealing with many different APIs. Fusebit offers connectors to the most common SaaS systems and we add more connectors weekly. However, our code-first platform is fully open and allows you to modify Fusebit connectors and add custom integrations to any system. With Fusebit, you are never limited in which systems you can connect to! Our product enables developers like you to quickly add integrations to an application using powerful API building blocks. It takes away the pain of developing against many disparate APIs while maintaining the flexibility and familiarity of a code-first platform. Just like Stripe solves payments for application developers, Fusebit solves integrations.

We've been in business since 2010 and have a long history of always supporting our users. We work with you to build an API that gives your growing applications everything it needs. Our API returns responses in less than a second. That's the time that your application can get a response and keep processing. We help you save time and energy by implementing multiple APIs. You can get back to building your application after you connect with our single one. We track all the requests made to enable you to debug all API calls, making implementation even easier. There is currently one environment that is available which is production. You can use the following URLs along with sample code snippets. All endpoints produce UTF-8 character sets, please ensure your application can handle the characters.

With a single API, you can integrate with Google Calendar and Microsoft Outlook. You can also integrate with Zoom and Google Meet to add conferencing to calendar events. Our API can be implemented easily within your current tech stack, without the need to install any new dependencies. Simply use cURL or whatever HTTP client that you're already using to make API requests. OAuth configuration is as easy as providing a redirect URL for your app to Pyas. When connecting new accounts, Pyas will use that URL to redirect users to your app. You can generate as many API keys as you need. Keys are encrypted and you can set them to expire after a period of time if you need to create temporary API keys. Use your API keys to start managing calendar events.

The Precise API offers essential insights into the financial health of business clients, including historical, real-time, and forecasted performance. The Precise API supports all leading accounting platforms with real-time push and pull functionality and is ideal for financial institutions, lenders, and fintechs that work with small and medium-sized businesses. A powerful add-on for the Precise API, Predict as a Service supports your business clients with a premium, white-label cash flow forecasting and scenario planning portal. Keep eyes on your products with a cash flow solution that will give your clients a reason to keep business data connected and engage with your brand for their financial needs.

Smartcar’s vehicle API enables you to verify mileage, manage EV charging, issue digital car keys, track fleets, and much more. Smartcar enables mobility businesses to integrate their apps and services with connected cars. Easily retrieve vehicle data and trigger actions with our simple and secure car API. Track a vehicle’s location, verify mileage, charge an EV, share a virtual key, and more. With our Smartcar Connect flow, your customers can instantly and effortlessly link their cars to your app. All it takes is four clicks directly from your mobile application or web portal. Our friendly documentation and SDKs allow you to quickly integrate our car API with every tech stack.

SaaS App Integrations Made Fast and Easy. Kloudless is an API integration platform that unifies endpoints and data models across many SaaS APIs so that you can code just once and instantly integrate your app with many SaaS providers. We figured out the ins and outs of 150+ APIs so you don’t have to. We learned how to talk to and maintain over 150+ APIs so that you don't have to. Partner with us to help your app integrate with any SaaS app that your customers want. Our Unified APIs unify endpoints and data models across many SaaS APIs so that you can code once and integrate many. Our Unified APIs abstract away the differences between many SaaS APIs, making it simple to build integrations quickly get new features to market. We offer extra features like real-time activity monitoring and pre-built tools like the File Picker and Crawler that the SaaS provider doesn’t even offer.

Railz is building the largest financial data network by bridging the connection between future-thinking financial institutions and real-time accounting data. Railz accomplishes this through an API that connects financial institutions to all major accounting software solutions, such as QuickBooks, Xero, and Sage. We offer financial institutions (FIs) the ability to connect with account service providers, collect data, normalize and sanitize that accounting data, and analyze it. Railz enables on-demand access to financial transactions, analytics, insights and reports on small and medium business (SMB) customers. Whether you’re a lender, financial institution, accounting firm, auditor, or startup developer that requires financial data, we can make this a reality for you - and fast.

APIPark is an open-source, all-in-one AI gateway and API developer portal, that helps developers and enterprises easily manage, integrate, and deploy AI services. No matter which AI model you use, APIPark provides a one-stop integration solution. It unifies the management of all authentication information and tracks the costs of API calls. Standardize the request data format for all AI models. When switching AI models or modifying prompts, it won’t affect your app or microservices, simplifying your AI usage and reducing maintenance costs. You can quickly combine AI models and prompts into new APIs. For example, using OpenAI GPT-4 and custom prompts, you can create sentiment analysis APIs, translation APIs, or data analysis APIs. API lifecycle management helps standardize the process of managing APIs, including traffic forwarding, load balancing, and managing different versions of publicly accessible APIs. This improves API quality and maintainability.

Billions of people. Trillions of connections. One API. The Nylas APIs power applications with email, calendar, and contacts sync from any inbox in the world. Only Nylas provides one API for 100% of email, calendar, and contacts integrations. Add missing information in contact records. Make warmer intros with the help of a connection graph. Compile data from each address book to create a unified data source. Straightforward, universal connectivity to lower your costs, save time, and increase developer productivity. Transform data into insights and personalize the user experience. Fuel innovation with unique customer intelligence. Automate digital processes to drive business growth. Streamline user workflows with powerful scheduling automation. Discover how organizations just like yours are driving engagement and increasing customer satisfaction with the Nylas APIs.