The best affiliate programs like PDF-API.io in 2025

Ugly Duckling is a straightforward analytics tool designed to help creators and individuals grow their audience on X (formerly Twitter) by tracking and optimizing their performance. With a focus on simplicity and usability, Ugly Duckling offers features such as weekly engagement goals, beautiful KPI dashboards, and a Chrome extension for instant access to analytics without the need to visit a web dashboard. Users can also export progress templates to share their achievements and participate in a weekly leaderboard that ranks consistency, effort, and growth, fostering a sense of community and healthy competition.

This tool is ideal for creators, social media enthusiasts, and anyone looking to improve their presence on X through data-driven insights and consistent engagement. Affiliates will find Ugly Duckling appealing to promote thanks to its user-friendly interface, risk-free 7-day trial, and attractive one-time lifetime payment model, making it a compelling and accessible solution for anyone aiming to build and sustain an engaged online audience.

Trancy is an AI-powered language learning platform designed to make mastering new languages immersive, interactive, and highly personalized. It stands out with its unique bilingual subtitle system for popular streaming platforms like YouTube, Netflix, HBO Max, and more, enabling users to practice listening and speaking skills directly with real-world video content. Trancy offers powerful tools such as AI-driven translation, word lookup, grammar analysis, sentence segmentation, and reading modes that help users understand and absorb language in context. The platform also provides intelligent text selection translation for web pages, full-text immersive translation, customizable translation engines, and compatibility with a wide range of websites, ensuring seamless language learning across the internet.

Trancy is ideal for language learners of all levels looking for a flexible and engaging way to improve their skills, whether for travel, education, or career advancement. Its robust suite of features, including deck creation, speech recognition, natural text-to-speech, and advanced NLP tools, make it a comprehensive solution for anyone aiming to achieve fluency. Affiliates will find Trancy an attractive program to promote due to its broad appeal, continuous development of new features, and its ability to meet the diverse needs of modern language learners.

Zonka Feedback simplifies CX, allowing you to start meaningful two-way conversations with customers via powerful surveys. Design stunning surveys in minutes, gather data from all touchpoints, understand customers better with AI analytics & close the feedback loop — all within one powerful platform

ShipFast is a powerful NextJS boilerplate designed to accelerate the development and launch of web applications, including SaaS, AI tools, and other startup ventures. By providing pre-built solutions for essential features such as Stripe webhooks, email setup, SEO tags, Google OAuth, and more, ShipFast eliminates the tedious and repetitive coding tasks that often delay projects. It empowers developers to focus on building and scaling their business, saving them over 22 hours of setup headaches. The platform includes components, animations, and themes with TailwindCSS, and offers lifetime updates, making it a comprehensive toolkit for indie makers and entrepreneurs aiming to ship their products quickly and efficiently.

Ideal for developers, startup founders, and indie makers, ShipFast caters to those who want to minimize time spent on backend integrations and frontend design. With promises of rapid deployment, profitability, and community support, ShipFast enables users to concentrate on innovation and business growth. It has been trusted by over thousands of users and endorsed by the startup community, including awards like Maker of the Year 2023 from Product Hunt.

ClickFunnels is a comprehensive software platform designed to help businesses build effective sales funnels that convert leads into customers. It simplifies the process of creating landing pages, sales pages, order forms, and membership sites without requiring any coding or design skills. With ClickFunnels, users can easily design and optimize each step of the buyer's journey to maximize conversions.

ClickFunnels is ideal for online entrepreneurs, small business owners, digital marketers, and anyone looking to sell products or services online. It caters to both beginners and experienced marketers by offering user-friendly drag-and-drop tools, pre-built funnel templates, and robust marketing features like email automation, A/B testing, and analytics.

Squarespace is a leading all-in-one platform that empowers individuals and businesses to easily create stunning, professional websites without the need for coding skills. With its user-friendly drag-and-drop interface, customizable templates, and comprehensive suite of integrated features, including e-commerce capabilities, SEO tools, and analytics, Squarespace streamlines the process of building a robust online presence. It's an ideal solution for small business owners, creatives, bloggers, and entrepreneurs who seek a polished, functional website to showcase their brand, products, or portfolio.

Squarespace caters to a wide range of users from various industries, offering versatility and scalability to accommodate growth and evolving needs. The platform also provides exceptional customer support and a wealth of resources such as tutorials and guides, making it a go-to choice for those who want a hassle-free way to establish and maintain a high-quality website. By promoting Squarespace, publishers can confidently recommend a reliable and sophisticated web-building solution that meets the diverse needs of today's digital landscape.

Leadpages is a powerful, user-friendly platform designed to help businesses and entrepreneurs create high-converting landing pages, pop-ups, and alert bars with ease. Known for its intuitive drag-and-drop editor, Leadpages enables users to build customs web pages without the need for coding skills. The platform offers a vast library of mobile-responsive templates that cater to various industries and marketing goals, ensuring that users can quickly deploy effective campaigns. Additionally, Leadpages provides advanced lead generation tools such as A/B testing, analytics, and integration with popular email marketing services to optimize conversion rates and drive growth.

This robust solution is ideal for digital marketers, small business owners, and solopreneurs looking to enhance their online presence and capture more leads. Its comprehensive features and user-friendly interface make it accessible for marketing professionals of all experience levels, empowering them to achieve professional results and boost their sales funnel performance. By promoting Leadpages, publishers can offer their audience a powerful tool that streamlines the creation of high-impact marketing campaigns and maximizes ROI.

Webflow is a powerful web design and development platform that enables users to create responsive, visually stunning websites without needing to write a single line of code. By combining a user-friendly drag-and-drop interface with sophisticated design capabilities, Webflow empowers designers, developers, and businesses of all sizes to craft custom websites that are production-ready. Additionally, it offers a suite of tools for CMS and e-commerce, allowing for seamless content management and online store creation.

This platform is particularly suited for creative professionals, including web designers, developers, and marketing agencies, who are looking to bring their design visions to life efficiently. Entrepreneurs and small businesses will also find Webflow valuable for its ability to produce professional-quality websites with minimal technical overhead, allowing them to focus on growing their online presence. By promoting Webflow, publishers can introduce their audience to a versatile and innovative tool that streamlines the website creation process without compromising on design or functionality.

The dead-simple starter kit for SaaS projects—quick setup, no learning curve, and designed for a simple pay-per-use pricing model.

Semrush is a comprehensive digital marketing toolkit designed to assist businesses, marketers, and SEO professionals in enhancing their online visibility. This all-in-one platform offers a wide range of features, including keyword research, site audits, competitive analysis, content marketing, and social media management. By leveraging Semrush's powerful analytics and insights, users can optimize their websites for search engines, develop effective marketing strategies, and gain a competitive edge in their industry.

Ideal for SEO specialists, digital marketers, content creators, and businesses of all sizes, Semrush empowers users to make data-driven decisions that boost traffic, increase rankings, and ultimately drive growth. Whether you're an experienced marketer looking to fine-tune your strategy or a beginner aiming to establish a robust online presence, Semrush provides the tools and insights needed to achieve measurable results.