The best affiliate programs like HubSpot 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.

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.

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.

GSCTool.com is a comprehensive Chrome extension designed to streamline and automate essential tasks in Google Search Console, Bing Webmaster Tools, and Yandex. It enables users to efficiently perform bulk actions such as URL indexing, inspection, and removal, as well as manage, import, and export URL data with ease. The tool supports instant indexing via Google and IndexNow, offers advanced search analytics, and allows for customizable settings to fit individual or team workflows. With support for up to five devices per license, GSCTool.com is trusted by over 8,000 users and provides a flexible pricing structure, including free, yearly, lifetime, and short-term day pass options.

GSCTool.com is ideal for website owners, SEO professionals, digital marketers, and agencies looking to save time and reduce manual work in search engine management. Affiliates will find this tool appealing to a broad audience who want to optimize site visibility and streamline technical SEO processes, making it a valuable addition to any affiliate portfolio thanks to its affordability, ease of use, and proven user base.

Gllow is an intuitive website and landing page builder designed to help users create professional, high-converting sites in just a few clicks—without needing a designer or developer. The platform offers a wide range of features, including over 80 ready-made components, 29 customizable design themes, responsive layouts, integrated lead collection forms, and perfect SEO scores on Google's PageSpeed test. Users can connect their own domains, embed scripts through Tag Manager, automate workflows via webhooks, and collaborate with team members in real time. Accessibility is built in at the code level, ensuring websites are usable by all visitors, and the friendly interface makes it easy for even non-technical users to launch a polished website in as little as five minutes.

Gllow is ideal for small businesses, agencies, course creators, restaurants, event organizers, and anyone seeking a hassle-free way to establish a strong online presence. Its combination of ease of use, robust features, and affordable pricing makes it an attractive solution for users looking to generate more leads and grow their business online. Affiliates will find Gllow a compelling offer to promote, as it addresses common pain points for website creation and appeals to a wide audience looking for fast, effective, and accessible web solutions.

GanttMaster is a comprehensive project management scheduling software designed to help teams and organizations efficiently plan, track, and execute projects of any size. With its intuitive interface, GanttMaster offers robust tools for project cost management, risk mitigation, and team coordination. Users can easily assign tasks, gain a centralized overview of project status, and manage deadlines with features like a real-time, interactive Gantt chart. The software supports seamless drag-and-drop adjustments, enabling instant updates to task durations, dependencies, and timelines, all while maintaining project coherence and visibility.

Ideal for project managers, team leaders, and organizations juggling multiple projects, GanttMaster simplifies complex scheduling and enhances team collaboration with powerful dependency management, detailed team and role-based access controls, and a comprehensive notification system. Affiliates will find GanttMaster an attractive program to promote due to its user-friendly design, versatility across industries, and strong appeal to businesses seeking to optimize project delivery and team productivity.

fwdAP is an intelligent accounts payable (AP) automation solution designed specifically for QuickBooks Online users. It streamlines the process of entering bills and credit card receipts by allowing users to simply forward invoices or receipts to a dedicated inbox, where fwdAP automatically processes and posts them directly into QuickBooks Online. With its plug-and-play setup, there’s no need for complicated mapping, syncing, or learning new software—businesses can get started quickly and see immediate workflow improvements. The platform also offers flexible rule-setting using conversational language, letting users customize how invoices and receipts are handled based on their unique bookkeeping requirements.

fwdAP is ideal for small business owners, bookkeepers, and accountants looking to save time, reduce manual data entry errors, and keep financial records accurate and up to date. Its ease of use, mobile accessibility, and focus on automation make it a valuable tool for anyone wanting to focus more on growing their business and less on paperwork. Affiliates will find fwdAP an attractive offer for clients who value efficiency, accuracy, and simplicity in their accounting processes.

Watchdog is an AI-powered community management and moderation tool designed to automate the process of keeping online communities safe, engaged, and on-topic. Supporting popular platforms such as Discord, Telegram, Reddit, X (Twitter), and Crisp, Watchdog leverages advanced artificial intelligence to monitor text, images, and voice messages in real-time. Users can set custom moderation rules in plain English, assign specific punishments for rule violations, and utilize an analytics dashboard to track infractions and actions taken. Beyond moderation, Watchdog also automates FAQ responses by importing knowledge bases and learning from admin replies, ensuring community members receive instant, accurate answers at any time.

This service is ideal for busy community owners, managers, and moderators who want to reduce manual workload, protect their communities from spam and abuse, and foster a positive atmosphere that encourages user retention and growth. Affiliates will find Watchdog an attractive choice to promote thanks to its broad platform compatibility, customizable rule system, multilingual support, and clear value in saving both time and money compared to traditional moderation solutions. It’s especially well-suited for larger or rapidly growing communities where consistent, scalable moderation is crucial for long-term success.

AuraVMS is a user-friendly RFQ (Request for Quotation) software designed to simplify and automate the procurement process for small and medium-sized businesses. With AuraVMS, users can easily create RFQs, broadcast them to multiple suppliers with a single click, collect and compare quotations in a standardized format, and award orders—all in one streamlined platform. The software eliminates manual data entry and complex workflows, allowing businesses to save significant time and effort, while features like supplier reminders, historical performance tracking, and seamless integrations with popular business tools further enhance efficiency and decision-making.

Ideal for procurement managers, small business owners, and teams looking to streamline vendor management without the hassle of expensive or complicated software, AuraVMS offers an affordable, minimalistic solution that requires no complex onboarding or training. Affiliates will find AuraVMS an attractive product to promote, as it delivers clear time and cost savings for businesses, supports fast adoption, and addresses a universal pain point in procurement processes across various industries.

TourFlow is an all-in-one inbound tour operation software designed to streamline and automate every aspect of managing client journeys for travel businesses. The platform offers comprehensive features including CRM and task management, itinerary planning, automated pricing, vendor management, booking, invoicing, and auto-generated itineraries—all accessible through a cloud-based system. With TourFlow, tour operators can control the entire client process from initial inquiry to booking and payment, reducing errors and increasing efficiency while allowing for flexible customization to fit unique business needs.

TourFlow is ideal for inbound tour operators, travel agencies, and DMCs looking to upgrade from manual processes to a centralized, digital solution. Its ease of use, automation capabilities, and remote accessibility make it a valuable tool for teams aiming to enhance productivity and service quality. Affiliates promoting TourFlow can confidently recommend a robust software that addresses the core challenges of tour management, making it an attractive choice for travel businesses seeking to scale and optimize their operations.