Unified APIs: best apps and software

LLM Gateway

LLM Gateway provides a unified API for managing and analyzing LLM requests across multiple providers, with features for usage tracking and access controls.

Merge

Merge provides a unified API for integrating various software applications, streamlining data synchronization and management across multiple services.

SnapTrade

SnapTrade is an API that connects financial applications to brokerages and crypto exchanges, enabling account management and trade execution.

Recall.ai

Recall.ai is an API platform that integrates meeting data from various video conferencing tools, enabling developers to create AI-driven meeting bots efficiently.

Cloud Elements

Cloud Elements is an API integration platform that simplifies the management and integration of cloud services for businesses.

Fuse

Fuse is an app that provides a unified API to connect financial accounts, improving connection success and reducing disconnections.

Smartcar

Smartcar provides an API for developers to access vehicle data and control features like mileage tracking, EV charging, and digital keys across multiple car brands.

Argyle

The Argyle app provides a platform for developing financial services that utilize verified income data.

Stedi

Stedi is an API-based platform for healthcare claims processing and eligibility checks, enabling integration with numerous payers efficiently.

SociaVault

Provides a REST API to retrieve real-time data from 25+ social media platforms (Instagram, TikTok, X, YouTube, LinkedIn, Facebook) for analytics, monitoring, research, and AI/ML.

Cobalt

Cobalt is an integration platform that allows SaaS companies to connect applications easily via a single API, offering over 250 pre-built integrations.

Rutter

Rutter is a Unified API that simplifies B2B financial product integration, allowing developers to connect with various platforms efficiently.

Nango

Nango is a platform that simplifies product integrations with pre-built options and extensive customization for various user needs.

Vital

Vital provides a universal API for digital health and wellness companies to connect wearables and laboratory data.

Finexer

Finexer simplifies financial processes for UK businesses through open banking solutions, offering real-time data, secure transactions, and tools for compliance and analytics.

Pyas

Pyas is an API that allows startups and solo developers to quickly integrate calendar features with Google Calendar, Microsoft Outlook, Zoom, and Google Meet.

API2Cart

API2Cart provides a unified API for integrating eCommerce platforms, enabling data access and management across multiple shopping carts like Shopify and Magento.

AiPrise

AiPrise is a platform that enables fintech companies to integrate with multiple identity vendors through a single interface, ensuring compliance and simplifying identity management.

Onepostly

A REST API for connecting social accounts and publishing, scheduling, and tracking content across X, Instagram, Facebook, LinkedIn, TikTok, YouTube, Pinterest, Threads, and Bluesky.

ApiFlux

ApiFlux provides one API for accessing 100+ AI models from Anthropic, OpenAI, Google, and others, with automatic failover, model switching, and usage tracking.

Trackstar

Trackstar is a universal API enabling quick integration with various warehouse management systems for supply chain logistics.

Ayrshare

Ayrshare provides APIs for social media posting, management, and analytics across platforms like Facebook, Instagram, and TikTok, simplifying content distribution and engagement tracking.

api-hub.ai

A unified API that lets developers access and switch between AI models from multiple providers through one endpoint.

Spreedly

Spreedly is a payment orchestration platform that simplifies payment processing by enabling integration with multiple payment gateways through one API.

Dapi

Dapi is a FinTech API that connects to users' bank accounts, enabling secure transfers, data access, and financial transaction management for applications.

Unified.to

Unified.to is a platform that simplifies SaaS integrations through a single API, allowing developers to quickly add and maintain multiple integrations.

Apideck

Apideck provides a unified API platform for developers to build and manage integrations across various services, enhancing product development and reducing implementation time.

Datashake

Datashake simplifies the process of retrieving online reviews for businesses through one API call, accessing data from over 85 websites.

Storecove

Storecove simplifies global e-invoicing via a single API, ensuring compliance and integration with various invoice formats and systems.

Chift

Chift simplifies B2B software integration through a unified API, enabling seamless connections and data synchronization between different applications.

Railz

Railz is a financial data integration platform that connects SMBs with real-time accounting insights and analytics through a single API.

Integration Labs

Integration Labs provides a unified API for B2B companies to access and sync financial data from over 30 accounting, payments, and e-commerce platforms.

Postproxy

Postproxy provides a single API to publish and schedule content across multiple social networks (Instagram, TikTok, YouTube), with explicit states and built‑in retries.

Noyo

Noyo is a digital platform that simplifies health insurance enrollment and management by connecting HR systems to insurance carriers via APIs for real-time data updates.

Truto

Truto.one allows companies to integrate various systems, including HRIS, CRM, and e-commerce, using unified APIs for streamlined operations.

Kombo

Kombo is an app that provides a unified API for quick and easy integration of various HR and ATS systems based on customer requests.

AgentKey

AgentKey connects compatible AI agents to live web and external data for search, page extraction, social, finance, ecommerce, business, and crypto research through one interface.

TokenlyPro

TokenlyPro is a marketplace for prepaid access to multiple AI model APIs. Users buy token allocations through one proxy API key, while providers sell unused capacity.

Integry

Integry enables SaaS apps to add and manage integrations with over 250 apps, offering API connectivity, a visual programming interface, and usage analytics.

StackOne

StackOne provides a Unified API for SaaS integration, allowing businesses to connect multiple data sources and tools easily, while ensuring security and real-time monitoring.

Jectora

Jectora provides a single OpenAI-compatible API for accessing and managing AI models from multiple providers, with routing, failover, caching, and organization controls.

Norba

Norba provides a single API and dashboard to search, book, and manage airline flights, fares, seats, baggage, and related services across carriers.

cloro

cloro provides a single API to retrieve structured search results and AI answers, including sources and citations, from Google and supported AI platforms.

APIKO

APİKO provides a unified API for integrating and monitoring text, image, video, and audio AI models from multiple providers.

River Markets

A trading platform that combines prediction markets such as Kalshi and Polymarket, with unified market data, order and portfolio management, execution tools, and APIs.

InvisibleAPI

InvisibleAPI is a REST and MCP API for connecting Instagram and X accounts, creating and scheduling posts, monitoring delivery, and viewing Instagram insights.

PostLake

PostLake provides a unified API and MCP server for managing social media accounts, including publishing, scheduling, engagement, analytics, and approvals across major platforms.

Meetstream.ai

Meetstream.ai provides APIs for bots to join Zoom, Google Meet, and Teams calls, capture audio, video, transcripts, chat, and participant data, and interact in real time.

FrankieOne

A platform connecting banks and fintechs to KYC, KYB, AML, identity verification, and fraud tools for customer onboarding, monitoring, and risk decisions.

PostPeer

PostPeer provides one API to create, schedule, publish, and manage social media posts across platforms including Instagram, X, YouTube, Facebook, and Pinterest.

Velokey

Velokey provides one API for accessing text, image, and video generation models from multiple providers, with model switching, routing, usage tracking, and billing.

포트원

A payment and finance operations platform that unifies multiple payment providers, automates settlements, and manages transaction and payout workflows for online businesses.

SocialCrawl

A unified API for scraping social media data from multiple platforms, returning structured profiles, posts, comments, search results, and metadata.

Synara

Developer-first API that manages calendar invites, updates, cancellations, and RSVPs across Google, Outlook, and Apple by normalizing event data and syncing reliably.

GTWY.AI

Provides a single API to access, switch, and manage multiple AI/LLM models and providers, with request routing, monitoring, embeddings, cost tracking, and failover controls.

Knit

Knit enables organizations to integrate multiple HR, recruitment, and chat tools through a unified API, streamlining onboarding and providing 24/7 management.