The best affiliate programs like Rendley SDK in 2025

Double Zero is an open-source email infrastructure platform that empowers users to fully own and control their email sending capabilities. Designed to simplify the deployment and management of email services, Double Zero provides an easy-to-use email API for sending transactional emails and supports advanced features like broadcasts and automations through its Pro version. With single-command deployment using SST, seamless setup of AWS services (SES, SNS, SQS, EC2, S3, Route 53), and a straightforward REST or JS API, users can quickly establish robust, scalable email infrastructure without relying on traditional third-party providers. The platform also offers features such as multi-recipient tracking, a WYSIWYG editor, SMTP endpoints, contact and list management, and team collaboration tools.

Double Zero is ideal for developers, SaaS businesses, and organizations seeking greater control, transparency, and cost-efficiency in their email operations. It stands out for its open and modifiable codebase, affordable pricing, and the ability to deploy within your own cloud environment, making it a compelling choice for privacy-conscious users and those looking to avoid vendor lock-in. Affiliates will find Double Zero attractive to promote, as it addresses a growing demand for customizable, developer-friendly email solutions that balance ease of use with full ownership and transparency.

InpuTron is an AI-powered form field solution designed to revolutionize how users interact with online forms. By integrating advanced AI APIs, InpuTron enables form fields to predict, enhance, or suggest text dynamically, making data entry smarter and more intuitive. Its platform stands out for its high degree of customization, allowing users to configure intelligent input fields using plain English and even extend functionality by incorporating their own models or leveraging retrieval-augmented generation (RAG). With flexible pricing plans, generous API call limits, and premium support, InpuTron empowers developers and businesses to create modern, responsive forms tailored to their unique needs.

InpuTron is ideal for web developers, SaaS platforms, and businesses seeking to deliver seamless and intelligent user experiences through their online forms. Affiliates will find InpuTron an attractive program to promote due to its innovative use of AI, flexible integration options, and broad appeal across industries looking to modernize their digital touchpoints with smarter, more interactive forms.

Reffresh.com is a user-friendly platform that enables developers and teams to quickly create mock APIs without any coding required. Designed to streamline the development and testing process, Reffresh.com allows users to set up customizable API endpoints in just a few clicks, making it easy to simulate real-world scenarios and accelerate product development. The service emphasizes simplicity and efficiency, offering an intuitive interface that eliminates the need for complex configurations or technical expertise.

This solution is ideal for software developers, QA testers, and project managers who need reliable mock APIs for prototyping, testing, or demonstrating applications. Affiliates will find Reffresh.com an attractive product to promote due to its broad appeal across technical and non-technical audiences, its focus on saving time and reducing development friction, and its potential to become an essential tool in any modern development workflow.

Pricetag is a native Mac application designed specifically for developers who want to manage app, in-app purchase, and subscription pricing efficiently through the App Store Connect API. It streamlines the entire pricing process, allowing users to set region-specific prices based on purchasing power parity, copy existing prices, apply discounts with automated calculations, and utilize custom datasets for consistent pricing strategies. With a user-friendly interface and robust automation, Pricetag eliminates the manual, time-consuming work typically required to adjust prices across multiple territories, making it an essential tool for developers looking to optimize their app revenue.

Pricetag is particularly beneficial for iOS developers, app managers, and businesses overseeing multiple products or targeting international markets. It is ideal for those planning pricing experiments, aiming to maximize revenue outside the US, or operating in countries with fluctuating currencies. Affiliates promoting Pricetag can confidently recommend a highly rated, in-demand solution that saves developers hours of tedious work and helps them increase global earnings, making it a compelling choice for anyone in the app development ecosystem.

LocalCan is a developer tool designed to streamline the process of exposing local applications to the internet or local networks using user-friendly public URLs and .local domains. It enables developers to instantly publish their localhost projects with secure, persistent public URLs, making it simple to share work with clients, test webhooks, OAuth integrations, and access apps across devices without complex configuration. With unlimited .local domains, automatic HTTPS, and robust traffic inspection and replay capabilities, LocalCan offers a seamless workflow for web and SaaS developers who need to test, debug, and collaborate efficiently. It stands out as a top alternative to tools like Ngrok, praised for its ease of use and reliability, and supports a broad range of frameworks, including Next.js, Vite, Laravel, Node.js, and more.

This tool is ideal for individual developers, small teams, and agencies who regularly build, test, or demo web applications and require quick, secure ways to expose local projects. Affiliates will find LocalCan attractive to promote due to its strong word-of-mouth reputation, time-saving features, and straightforward pricing, making it a compelling solution for developers seeking to simplify their development and testing processes.

Teydea Studio is a professional web engineering studio specializing in WordPress solutions, founded by an experienced software engineer with over 15 years in the industry. The studio is dedicated to creating high-quality, reliable WordPress plugins and themes that prioritize performance, security, and ease of use. Their flagship products include tools like WP Password Policy, which allows site owners to enforce strong password policies for improved security, as well as plugins for password reset enforcement, custom login screen customization, and job portal management. Teydea Studio also develops free resources available on the official WordPress.org directories, making it a valuable contributor to the WordPress ecosystem.

This service is ideal for WordPress site owners, developers, agencies, and businesses seeking to enhance their website's security, functionality, and user experience with robust, well-supported plugins and themes. Affiliates will find Teydea Studio a strong choice to promote due to its focus on quality, continuous updates, and solutions that address common needs in the WordPress community, making it appealing to a wide audience of website administrators and digital professionals.

SwiftySaaS is an all-in-one SaaS platform designed to help entrepreneurs and developers launch, manage, and scale their own SaaS businesses quickly and efficiently. The platform provides a comprehensive suite of ready-made tools and infrastructure, including user authentication, subscription management, billing, analytics, and email notifications, eliminating the need for complex backend development. With SwiftySaaS, users can focus on building and improving their core product while relying on a secure and scalable foundation that handles the technical essentials.

This service is ideal for solo founders, small teams, and agencies looking to bring SaaS ideas to market without heavy investment in infrastructure or backend engineering. Affiliates will find SwiftySaaS appealing to promote because it addresses a common bottleneck in SaaS development, offering a fast, reliable, and cost-effective solution for launching new software ventures, making it a valuable choice for their audience of aspiring SaaS creators.

Supersaas is a comprehensive SaaS starter kit built on Nuxt 4, designed to help developers rapidly launch production-ready SaaS applications with minimal setup. It integrates essential features out of the box, including robust authentication flows (email, social login, magic links, passkeys, OTP/2FA), flexible database and file storage options (supporting NuxtHub, Postgres, Turso, Neon, AWS S3, Digital Ocean Spaces, and Cloudflare R2), built-in payments and subscription management via Stripe, and advanced user/team management capabilities. Developers also benefit from a powerful super admin dashboard for user and billing oversight, a collection of ready-to-use app examples (AI chat, notes, URL shortener, Todoist clone, file manager), and a codebase that prioritizes clean structure, customizability, and best practices.

Supersaas is ideal for developers, freelancers, indie hackers, and agencies looking to save significant development time and launch SaaS projects efficiently. Its lifetime license, unlimited project use, and ongoing free updates make it a strong investment for those building commercial or client SaaS solutions. Affiliates promoting Supersaas can confidently recommend a feature-rich, highly praised product that solves common SaaS development challenges, appeals to a growing developer community, and offers strong value for anyone looking to build and ship modern web applications faster.

KickStart by FormKit is an innovative tool designed to streamline and accelerate the process of form creation for developers and teams working with Vue.js. With KickStart, users can generate fully functional forms in seconds using a prompt, image, or text attachment, then easily copy and paste the output as Vue components or FormKit schema into their projects. The platform supports a wide range of use cases, from simple contact forms to complex multi-user registration and database-driven forms, and even allows migration from screenshots, sketches, or existing Gravity Forms exports.

KickStart is ideal for developers, agencies, and businesses that need to quickly prototype, migrate, or iterate on web forms without starting from scratch. Its fast generation capabilities and flexibility make it an excellent choice for affiliates to promote, as it solves common pain points in web development and appeals to a broad audience looking to save time and boost productivity when building forms for web applications.

Flowappz offers a suite of powerful, easy-to-use apps designed specifically for Webflow users, aiming to enhance the functionality and user experience of Webflow websites. Their collection includes tools like Form Fields Pro for building advanced, customizable forms with features such as dropdowns, date pickers, and range sliders, as well as a fully editable Cookie Consent popup builder for compliance and user trust. Additionally, Flowappz provides a Social Share tool that enables the seamless addition of attractive share buttons to any Webflow site, helping to drive engagement and increase visibility.

These solutions are ideal for Webflow designers, developers, agencies, and business owners who want to quickly add advanced features to their sites without coding. Affiliates will find Flowappz an appealing program to promote because it addresses common pain points in website creation, offering essential enhancements that save time, boost site performance, and improve user interaction for a wide range of Webflow projects.