Best Unified APIs Software in 2025 - Page 2

Hundreds of thousands of developers around the world use Nylas to increase velocity and seamlessly build customizable email and scheduling capabilities through state-of-the-art APIs. Nylas is the only platform that gives developers universal access to email, calendar, and contacts providers through a single integration. Developers and their teams are increasingly turning to Nylas to quickly and securely launch critical features, enabling them to spend less time on their infrastructure and more time building software with limitless potential. Learn more at www.nylas.com and follow us on LinkedIn, Twitter, and YouTube.

hotglue is a developer-first embedded iPaaS founded by engineers to help B2B SaaS companies like Chargebee, Instructure, and SpotOn offer integrations in their product with other platforms. Based out of Washington DC, our team focuses on providing robust integration solutions that developers actually want to use. Our platform offers pre-built connectors to hundreds of SaaS applications (like Salesforce, NetSuite, Quickbooks, and more) while maintaining code-level control, custom transformations, and complete white-labeling capabilities. We handle the authentication, infrastructure, and connection UI while giving developers the flexibility they need. hotglue transforms integrations from engineering challenges into sales advantages for early-stage B2B SaaS companies. We enable teams to rapidly deploy customer-facing integrations that feel native to your product, helping close deals faster with significantly less engineering effort.

Aurinko powers core communications features, and offers out-of-the-box CRM sync logic, and ready-to-integrate Gmail and Outlook add-ons allowing business platforms (CRM, ATS, PM, PRM, LMS) to enable intelligent relationship management. *** CRM Sync Logic *** ENABLE INTELLIGENT RELATIONSHIP MANAGEMENT - Capture email and calendar activities and add them to CRM records automatically for predicting closed/won opportunities, detecting missing CRM contacts, and suggesting new connections. - Sync calendar events, contacts, and tasks bi-directionally for understanding key relationships and the level of engagement. - Proven sync engine used by thousands of Salesforce CRM users. *** Unified Mailbox APIs (Email, Calendar, Contacts, Tasks) *** POWER YOUR CORE COMMUNICATIONS FEATURES - Customize customer engagements and increase email deliverability. - Leverage Aurinko's advanced calendar scheduling capabilities. - Integrate users' address books and manage their to-do items. - Focus on your core products and let us maintain the provider APIs. *** Enable your business platform to gain differentiating insights by white-labeling our pre-built sync solutions!

Tray.ai offers a composable AI integration and automation platform that transforms AI into standout business performance. The Tray Universal Automation Cloud is an AI-ready platform that eliminates the need for disparate tools, enabling seamless integration and automation of complex business processes. Our platform supports all AI, integration, and automation initiatives from a single place. Developers benefit from a code-first, headless environment, freeing them from mundane tasks and allowing focus on business outcomes. The Tray Build IDE and AI Palette accelerate delivery for business technologists, providing easy access to 3rd party connectors and native AI capabilities. As enterprises strive for competitive advantage, our platform helps IT teams deploy AI effectively, connecting systems, automating processes, and integrating data to handle even the most demanding AI use cases. Built for high-change environments, Tray.ai excels in rapid prototyping, testing, and deployment. The fastest way to turn AI into business performance.™

Netlify is the platform for enterprises to build highly-performant and dynamic websites, e-commerce stores, and web apps. By uniting an extensive ecosystem of technologies, services and APIs into one workflow, Netlify unlocks new levels of team productivity, while saving time and money.

Truto.one enables companies to offer their customers integrations across HRIS, ATS, CRM, Helpdesk, Ticketing, Payment Gateways, Subscription Platforms, Accounting, E-commerce, and Email with unified APIs.

Integration.app presents the Universal Integration Layer: the turnkey solution for scaling your customer-facing integrations with any SaaS app, any use case. We’ve built on the strengths of previous generations by combining the standardization and turnkey nature of Unified APIs with the ease and scalability of more customized Embedded iPaaS solutions. Unlike IpaaS platforms or unified APIs, Integration.app operates at a lower level of infrastructure, giving developers multiple building blocks to assemble any kind of customer-facing integration with full flexibility and control. The platform eliminates the traditional blockers of these approaches, such as rigid, static data sets and the need to build multiple integrations one at a time. You can choose to integrate any of our 3000+ connectors across various SaaS categories (CRMs, task management, accounting, etc.) or build your own custom connector for any app with an OpenAPI spec using LLM-powered features for scraping API docs and mapping data.

API2Cart helps to integrate your service with multiple shopping carts. It’s 1 API that work in the same way across all different shopping platforms, so if you customers have their stores on different platforms you don’t have to go and create separate API integrations for each of them one by one you can do it through only one. You can easily increase a number of supported platforms. You could get (retrieve) data from a store of your clients about products, orders, customers, shipments, and other categories and send it back to store. We integrate with more then 35 platform, among them Shopify, Magento, Bigcommerce, Woocommerce.

Commenda is the AI-powered global business console. Click-to-expand and operate anywhere on Earth. From Transfer Pricing and Global VAT, GST, and Sales Tax to Corporate Tax and Accounting, Commenda handles it all with built-in automation and real-time visibility. No missed deadlines, no manual work. Just a clear, reliable way to stay compliant across markets. Powered by intelligent software, expert guidance, and a trusted global partner network, Commenda gives you everything you need to launch, run, and scale with confidence. We’re not just building a platform. We’re building the infrastructure for a more prosperous global economy. A world where opportunity isn’t gated by regulation and progress isn’t slowed by paperwork.

Integrations solution that helps startups and developers utilize application programming interfaces to connect with calendars. The Pyas API can be implemented easily within any tech stack, without the need to install any new dependencies. Pyas allows development teams to build calendar integration features in minutes instead of months. Easily integrate with Google Calendar and Microsoft Outlook. Integrate Zoom and Google Meet for video conferencing, all using a single API.

We help contractors and software vendors access, sync, and move data between systems. We save time, remove mistakes, and reduce project costs.

CallerAPI is an enterprise spam call blocking and telecom fraud prevention API that helps carriers, CPaaS platforms, VoIP providers, and enterprises protect their networks, reduce fraud, and improve call trust — all through a single, scalable API With global coverage across 27 countries and more than 15,000 new spam numbers identified every day, CallerAPI delivers real-time intelligence that stops robocalls, spoofing, and scam attempts before they reach end users Known for its low-latency performance (average response ~0.5 seconds) and ability to handle millions of daily lookups, CallerAPI combines spam detection, carrier validation, and risk scoring into one unified solution. Its continuously updated fraud database refreshes every 5 minutes, ensuring businesses always operate with the most accurate and reliable data Trusted by telecom operators, VoIP providers, and fraud prevention teams worldwide, CallerAPI enables organizations to strengthen compliance, raise answer rates, and protect revenue streams. With flexible integration options, white-label support, and enterprise-grade scalability, it provides the foundation for a safer, more efficient global calling ecosystem CallerAPI is building the world’s leading spam call intelligence and blocking infrastructure — purpose-built for enterprises that demand reliability, speed, and accuracy at scale

Terra is an API that makes it easy for apps to connect to wearables.

Entri is the API for custom domains. We make it easy for your application to connect, secure, sell, and power custom domains. POWER Incentivize upgrades in your product by offering custom domains. Entri Power makes it easy to deploy this feature quickly and easily, with just a few lines of code. SELL Create a new revenue stream by selling domains to your users, right from your own application UI. Entri Sell is a no-cost product that pays the highest commissions in the industry, regardless of top level domain. Integration is as simple as adding a few lines of code - no need to become a registrar. CONNECT Drive faster user adoption and better retention by automatically configuring DNS records for your users. Entri Connect creates a seamless user experience for connecting custom domains, and supports domains for 35 DNS providers (and counting). MONITOR Entri Monitor checks for DNS changes on your customers domains every hour, so you can take action to re-capture churning customers, improve deliverability, fix broken pages, and more. SECURE Automatically provision SSL certificates within your application - no need to manage renewals or become a certificate authority. Entri Secure takes the headache out of SSL provisioning, at an average savings of 40% compared to other SSL for SaaS providers. CROWDED ROADMAP? NO PROBLEM. Entri was built by engineers who have been where you are. Improve usability, without deprioritizing anything else on your roadmap. All of Entri’s products integrate with a simple copy and paste code and a little QA, with a pre-built, fully whitelabellable UI to keep the product marketing team happy. PRICING FROM STARTUPS TO ENTERPRISES Whether you’re just starting out with 10 users, or managing 10 million SSL certificates, we have pricing that meets your needs, with economies of scale, and no long-term contracts for startups. To get started, reach out to our sales team, or try an instant demo here: entri.com/demo

NexHealth is the patient experience platform that provides true practice automation. We help you eliminate the tedious tasks that slows your team down and keeps them tied to the front desk. Our proprietary Synchronizer technology syncs directly with your health record system in real-time, with updates appearing in seconds, not minutes or hours. This unique, reliable sync means you can actually automate every step of the patient journey from booking to payment without the errors and delays common on other platforms. Our patient booking software helps you fill the calendar without endless phone calls. Real-time online booking lets patients schedule 24/7 while our automated Waitlist fills last-minute cancellations in minutes. Bring patients back for the care they need with automated patient recall messages. Our unique 1-Click Booking links makes it easy for patients to schedule follow-ups via SMS or email without a patient portal, saving your team from hours of manual outreach and delighting patients with fewer steps to make an appointment. Handle your entire patient intake process with our HIPAA compliant digital forms software that eliminates the need for paperwork and manual data entry. We digitize your existing forms for you or you can easily create your own with the powerful form builder. Capture all the data you need - from consent, history, payments, and more. Patient information syncs automatically to their record in your EHR, saving you hours of time and reducing data mistakes. Stay on schedule with patients that show up with their intake forms already completed by sending the right forms automatically before each appointment. Next, NexHealth helps you eliminate phone tag with a comprehensive patient communication suite. Automate everything from customizable appointment reminder sequences that reduce no-shows to review requests after appointments that boost your online reputation using feedback from your happiest patients. Our HIPAA-compliant two-way messaging lets your team text directly with patients, ending the game of phone tag for good. Finally, get paid faster with in-office terminals and digital payment requests that sync with your EHR ledger. You can collect outstanding balances with simple text and email payment requests that make it convenient for patients to pay. Ledger Sync instantly shows who has a balance and automatically posts payments back to the patient record with correct provider and procedure attribution, saving hours valuable admin time every week. Free your team from repetitive tasks so they can focus on what matters most: the patients. Get started with flexible, month-to-month billing and no long-term contracts.