The best affiliate programs like Unbounce in 2025

InvoicingAPI is a versatile and developer-friendly invoicing platform designed to make creating, customizing, and managing invoices seamless for businesses of all sizes. With support for global tax regulations, a robust library of customizable templates, and the ability to generate beautifully formatted PDF invoices via a simple API call, InvoicingAPI streamlines the entire invoicing process. Users can invoice clients in any currency, integrate payment links for faster transactions, and manage payments, refunds, and payouts from an intuitive dashboard—all while enjoying a generous free tier and no fees on payments. The platform is platform-independent, supports unlimited app integrations with a single API key, and offers built-in safeguards to prevent accidental request overloads.

InvoicingAPI is a perfect solution for SaaS providers, e-commerce businesses, marketplaces, consultants, POS systems, and CRM developers looking to add dynamic, tax-compliant invoicing without heavy development overhead. Its ease of integration, high degree of customization, and focus on security and scalability make it an excellent choice for affiliates to promote, appealing to a broad audience of businesses seeking efficient and reliable invoicing solutions.

Intellecs.ai is an AI-powered study platform and note-taking app designed to streamline and enhance the learning experience for students. Combining note-taking, AI chat, flashcard creation, and deep research tools into a single intuitive platform, Intellecs.ai enables users to organize and restructure their notes effortlessly, create and study flashcards, perform advanced research, and leverage AI to clarify and expand their study materials. Its markdown-based formatting, drag-and-drop functionality, and keyboard shortcuts keep the workflow seamless and distraction-free, while AI-powered features help users build comprehensive, well-structured notes and generate flashcards automatically.

Ideal for students, lifelong learners, and anyone looking to consolidate their learning tools, Intellecs.ai eliminates the need for juggling multiple apps or subscriptions. With its focus on active recall, spaced repetition, and consistent study habits, it supports learners in retaining information effectively and preparing thoroughly for exams. Affiliates will find Intellecs.ai an appealing choice to promote due to its innovative all-in-one approach, strong value proposition, and appeal to ambitious students seeking smarter, more efficient study solutions.

InvoiceAhoy is a streamlined invoicing solution designed for developers and businesses that need to create, store, and deliver professional invoices directly from any web platform. Featuring an easy-to-use API, pre-built invoice templates, and integration options like Zapier, InvoiceAhoy takes the hassle out of invoice generation. With built-in compliance for global jurisdictions, automatic translation for localized customer communication, and secure encrypted document storage, users can quickly generate and send invoices that look great and meet all regulatory requirements.

This service is ideal for SaaS companies, online marketplaces, freelancers, and any business that needs reliable, automated invoicing integrated into their workflows. Affiliates will find InvoiceAhoy an attractive option to promote due to its developer-friendly approach, flexible pricing plans, and broad appeal for businesses seeking an efficient, compliant, and modern invoicing solution.

InPrivy is a secure platform designed for safely sharing sensitive information such as passwords, API keys, confidential notes, and files online. Unlike traditional methods like email or chat, where private data remains visible and vulnerable, InPrivy provides one-time encrypted links that ensure your information is accessible only to the intended recipient and is automatically voided after use. The platform is GDPR compliant, hosted in Germany with robust AES-256 encryption, and offers additional privacy features like customizable branding, domain options, password protection, team management, API access, and detailed usage notifications—all with a simple, intuitive interface.

InPrivy is an excellent solution for professionals and teams—such as law firms, accountants, IT companies, and agencies—who regularly need to exchange confidential data securely. Affiliates will find InPrivy appealing to promote due to its strong privacy credentials, lifetime pricing with no subscriptions, and broad appeal to businesses prioritizing data protection and compliance. Its ease of use and commitment to privacy make it a valuable tool for anyone needing to share sensitive information online without compromise.

Infography is an AI-powered platform that transforms blog posts and complex content into visually compelling, shareable infographics in just seconds. By leveraging advanced language models and intuitive design tools, Infography eliminates the traditional hassle of research, design planning, and manual graphic creation, delivering professional-quality visuals at a fraction of the time and cost. Users can input a blog link, topic, or content prompt, and the platform automatically generates eye-catching infographics with customizable branding options, support for over 100 languages, and seamless API integration for content platforms and marketing tools.

Ideal for content creators, marketers, bloggers, educators, and agencies looking to boost engagement, simplify information, and increase the shareability of their content, Infography stands out as a powerful solution for repurposing and amplifying existing material. Affiliates will find this tool particularly appealing to promote thanks to its broad use cases, cost-effectiveness, and strong appeal to a rapidly growing creator economy eager for time-saving and results-driven content solutions.

inFlight is an advanced sound add-on designed for Microsoft Flight Simulator 2020 and 2024, offering dynamic, AI-powered crew and passenger announcements that adapt to each unique flight. Leveraging real-time flight data, routes, weather, and airports, inFlight delivers immersive pilot and crew communications in over 50 languages and accents, ensuring that every flight experience feels authentic and engaging. Unlike traditional audio packs that use static recordings, inFlight's announcements are hands-free and automatically triggered according to the various phases of flight, providing a seamless and realistic atmosphere. The add-on is easy to install, requires no additional programs or complex customizations, and includes ongoing updates with the latest AI-driven features.

This product is ideal for flight simulation enthusiasts who want to elevate their MSFS experience with realistic audio immersion, as well as for streamers and content creators seeking to enhance the authenticity of their virtual flights. Affiliates will find inFlight a compelling choice to promote due to its unique AI technology, ease of use, multilingual capabilities, and strong appeal to the large and passionate MSFS community, making it a valuable addition to any affiliate program focused on gaming or simulation tools.

InfoFlow is a versatile read-it-later and personal knowledge management app designed with a local-first approach, ensuring that users retain full ownership and privacy of their data. The platform offers breakthrough speed, seamless syncing across all devices, and full offline functionality, allowing users to access and manage their content whether or not they're connected to the internet. InfoFlow supports a wide range of features including bookmarking, note-taking, content creation, and knowledge base building, making it an all-in-one solution for organizing and accessing information. With support for Windows, Android, iOS, macOS, and web platforms, InfoFlow ensures a smooth and consistent user experience across any device.

Ideal for professionals, students, and anyone who values privacy and efficient knowledge management, InfoFlow stands out for its security-focused, affordable, and easy-to-use design. Affiliates promoting InfoFlow can confidently recommend a robust tool that appeals to privacy-conscious users seeking to streamline their workflow and organize their information without relying on cloud-dependent solutions. This makes InfoFlow a compelling choice for those looking to offer real value to their audience while earning competitive commissions.

Inbox Zero is an AI-powered executive assistant designed to revolutionize email management for Gmail and Google Workspace users. The platform automates repetitive tasks such as drafting replies, organizing and labeling emails, unsubscribing from unwanted newsletters, and blocking cold outreach, all based on user instructions in plain English. With features like Reply Zero for pre-drafted responses, bulk unsubscribing, cold email blocking, and detailed email analytics, Inbox Zero empowers users to reclaim their time and maintain a clutter-free inbox with minimal effort. Its privacy-first approach, open-source codebase, and Google approval ensure users’ data stays secure, while the ability to self-host adds an extra layer of control.

Inbox Zero is ideal for busy professionals, entrepreneurs, and anyone overwhelmed by their email load who wants a smarter, more efficient workflow without the cost of a human assistant. Affiliates will find this product especially appealing to productivity enthusiasts and business users seeking to optimize their daily routines, making it a compelling addition to any affiliate program lineup due to its tangible benefits, growing user base, and strong demand for effective email solutions.

Indie Starter offers modern, visually-stunning website templates and boilerplates built with the latest web technologies such as React, Next.js, Supabase, and TypeScript. Designed for speed, customization, and best coding practices, Indie Starter empowers developers and entrepreneurs to launch web projects quickly without sacrificing quality. Each template comes with essential features out of the box—including SEO optimization, authentication (magic links and social logins), Stripe-powered payments, a pre-built blog with Sanity, analytics integration, and high-quality UI components—enabling users to focus on building unique features rather than foundational setup.

This solution is ideal for startup founders, freelance developers, small teams, and anyone looking to accelerate their web development workflow or rapidly prototype new ideas. Affiliates will find Indie Starter an attractive program to promote, as it delivers tangible time savings, excellent code quality, and all the tools needed for modern SaaS or web app launches—making it a valuable choice for audiences seeking to streamline their product development process.

Immoklar is a user-friendly real estate analysis tool designed for property investors in the DACH region, making it easy to evaluate the profitability and cash flow of any residential investment. In just a few minutes, users can input key figures such as purchase price, rental income, and operating costs, and receive precise calculations on returns, cash flow, and value development. The platform streamlines complex financial planning by offering automated analyses, financing simulations, and customizable checklists for property viewings. Immoklar also enables users to generate professional PDF exports for bank meetings, eliminating the need for error-prone spreadsheets and manual calculations.

This solution is ideal for new and experienced property investors, home buyers, and anyone looking to make confident, data-driven decisions in real estate. Its intuitive interface and comprehensive features remove barriers for those without financial or Excel expertise, while the web-based platform ensures flexibility and accessibility on any device. Affiliates will find Immoklar an appealing program to promote, as it addresses widespread pain points in property investment and empowers users to make smarter, more profitable decisions with minimal effort.