Facebook Marketing API Alternatives (2025)

The HubSpot API is a set of RESTful endpoints that allows developers to interact with and access data from the HubSpot CRM platform. With this API, developers can create custom integrations and applications to automate their marketing, sales, and customer service workflows. The API provides access to a wide range of HubSpot features, such as contacts, deals, companies, tickets, and more. It is flexible and easy to use, with a variety of client libraries available in different programming languages. The HubSpot API also supports OAuth2 authentication and provides detailed documentation, making it an ideal solution for developers looking to build custom integrations with the HubSpot platform.

Provides programmatic access to various advertising technologies. You should consider using the Bing Ads API if your business model resembles: 1) You are a direct advertiser managing your own ad spend and you want to integrate our PPC marketing with your internal inventory management or conversion tracking systems. 2) You are a tools vendor developing advertising management solutions for advertisers or agencies. 3) You are an advertising agency and manage ad campaigns for many clients. 4) You are an aggregator and want to build Bing Ads API applications to manage the campaigns of your advertising clients.

Email marketing, ads, landing pages, and CRM tools to grow your business on your terms. Now use MailChimp API to integrate all functionalities of MailChimp into your custom applications.

With Pipedrive CRM designed for salespeople, by salespeople, you’re able to do more to grow your business. Easily build integrations with our API and reach over 90k companies in the Pipedrive Marketplace. Pipedrive is a sales CRM with an intuitive RESTful API. You can use our API to create public or private apps using OAuth and integrations via API token. Public apps and integrations work directly with Pipedrive and are available in the Pipedrive's Marketplace.

Optimizely is the world's leading experimentation platform, empowering marketing and product teams to test, learn and deploy winning digital experiences, every time. Improve your product quality and velocity with feature management. Drive measurable impact with product experimentation. Optimize the experience across any platform including websites, backend code, mobile and conversational apps. Target your messaging, personalize your campaigns, and ultimately drive substantial growth for your business. Powerful, easy to use solutions, to test what messages, imagery, and offers help increase conversion, retention, and lifetime value.

Email Service. Set up your email integration in no time, and start A/B testing, scheduling, and tracking your sends via our send email api. Whether you need to send 10 emails or 10 million, our email delivery infrastructure scales with you.

Send email from your app. The world’s most powerful email delivery solution is now yours in a developer-friendly, quick to set up cloud service.

The Zoom API is the primary means for developers to access a collection of resources from Zoom. The Zoom API allows developers to safely and securely access information from Zoom. You can use this API to build private services or public applications on the Zoom App Marketplace. To learn how to get your credentials and create private/public applications, read our Authorization Guide. All endpoints are available via https and are located at api.zoom.us/v2/.

Clockify's REST-based API can be used to push/pull data to/from it & integrate it with other systems

DFK’s API enables you to programatically manage and run your web data extraction and SERPs collection Tasks. You can easily retrieve extracted data afterwards.

CTA. We’re glad you’re interested in developing applications using data from CTA. This set of data offerings will be able to help you create interesting new applications and mash-ups that’ll help people get the information they want or need about CTA services, wherever they want to receive it. The information provided through data feeds includes static schedule and service data using an open standard, and APIs that can get you up-to-the-minute information from both CTA Bus Tracker SM and CTA Train Tracker SM. We also have a Customer Alerts API that is a feed of both planned and unplanned events that affect service, as published on transitchicago.com.

A collection of information retrieval, and natural language APIs. A content analysis API used for collecting and analyzing news content at scale. An easy-to-use API used to perform a variety of complex NLP tasks on documents, reviews, social comments, or any other type of text. A user friendly platform that makes training custom NLP models easy.