5 Best Free WordPress Affiliate Plugins for 2026

Best Free WordPress Affiliate Plugins

• Siren Affiliates
• Affiliates Manager
• SliceWP
• YITH WooCommerce Affiliates
• Affiliates by itthinx

In this guide, we compare the 5 best free WordPress affiliate plugins, what each one is best for, what features matter most, and when a free plugin is enough to get started.

We selected these 5 plugins because they offer great free starting points and give WordPress site owners strong alternatives to the most common affiliate tools on the market, which often don’t offer a full free plan or dedicated support.

To compare them, we looked at:

• Whether the plugin has a free plan or a free WordPress.org version
• What type of affiliate program is it best suited for
• Whether it supports referral links, coupon tracking, or both
• How commissions and rewards are managed
• Whether affiliates get a dashboard or an account area

1. Siren Affiliates

Siren Affiliates is best if you want to start with a free WordPress affiliate program but willing to expand into other incentive programs later.

It gives you a broader incentive system, and it offers one of the most complete free plans on the market, so you can start with affiliates and later build referral programs, customer rewards, revenue share, royalties, commissions, or performance bonuses from the same foundation.

This makes Siren a strong fit if your first program is an affiliate program, but your long-term growth strategy may include more than one type of reward or partner-driven motion.

Main Features

• Multiple program types: Launch affiliate, referral, revenue share, royalty, loyalty, rep, or dealer programs from 30+ ready-made templates.
• Link and coupon tracking: Track sales through referral links and coupon codes, both available on the free Lite tier.
• Commission types: Use percentage commissions, flat-per-sale rewards, and per-product or per-category rates on Lite, with more commission types available on higher tiers.
• Payout tracking: Track every commission owed, batch payouts by partner and currency, and export payout data for your preferred payment workflow.
• WordPress integrations: Connect Siren with native WordPress integrations like WooCommerce, Easy Digital Downloads, LifterLMS, LearnDash, Gravity Forms, Ninja Forms, North Commerce, and WordPress core.

View All Features

Free-version limitations

Siren Lite is limited to just one WordPress site and community support.

About the Free Plan

Siren offers a free plan, making it a strong option for businesses that want to launch a WordPress affiliate program without paying upfront.

Get the Free Plan Here

Reviews

Siren is extremely flexible, and it opens up a whole world of possibilities based collaboration. I recommend you try it out for yourself, and if you have any questions, the support is excellent.

Armando J. - Principal Software Engineer, PerezCarreno & Coindreau

Siren is so much more than an affiliate software with its multiple reward structures. There’s nothing like it on the market. Period.

Justin Ferriman - Founder, BrightGrowth

Pro tip: Siren also has a full interactive demo you can explore before signing up or paying. You can see how programs are created, managed, tracked, and rewarded inside the platform.

Try the Interactive Demo

2. Affiliates Manager

Affiliates Manager is a classic free WordPress affiliate plugin for creating and managing a traditional affiliate program.

It is useful for WordPress site owners who want to recruit affiliates, track referrals, manage commissions, and handle affiliate activity from inside WordPress.

This plugin is a good fit if you want a straightforward affiliate management setup and do not need a broader incentive system.

Main Features

• Affiliate registration
• Affiliate login and management
• Referral tracking
• Commission tracking
• Flat-rate or percentage commissions
• Manual affiliate approval
• Manual payouts
• Affiliate coupon tracking
• Referral link generator
• WooCommerce and Easy Digital Downloads integrations

Free-version limitations

The free core plugin covers a traditional affiliate workflow, but some integrations, automation options, and more specialized capabilities may require paid extensions. Check the extension requirements for your ecommerce or membership setup before choosing it.

About the Free Plan

Affiliates Manager has a free plugin available on WordPress.org. Additional extensions or integrations may be needed depending on the setup and features required.

3. SliceWP

SliceWP is a free/freemium WordPress affiliate plugin with a clean setup experience and a modern affiliate management workflow.

It is especially relevant for WooCommerce and Easy Digital Downloads stores that want to track visits, commissions, affiliate accounts, and basic affiliate performance from WordPress.

SliceWP is a good option if you want a user-friendly affiliate plugin with a free starting point and optional premium upgrades.

Main Features

• Step-by-step setup wizard
• WooCommerce integration
• Easy Digital Downloads integration
• Affiliate registration
• Affiliate account pages
• Visit tracking
• Commission tracking
• Email notifications
• Affiliate creatives
• Premium add-ons for advanced features

Free-version limitations

SliceWP’s free version is designed for core affiliate tracking and program management. More advanced commission rules, automation, integrations, and growth features may require a paid plan or add-on.

About the Free Plan

SliceWP has a free plugin available on WordPress.org. Paid plans and add-ons are available for more advanced affiliate program features.

4. YITH WooCommerce Affiliates

YITH WooCommerce Affiliates is best for WooCommerce stores that want a free affiliate plugin built specifically around WooCommerce sales and commissions.

The plugin lets store owners create an affiliate program, manage affiliates, track visits and commissions, and give affiliates a way to monitor their performance.

This is a strong fit if your affiliate program is centered on WooCommerce purchases.

Main Features

• Affiliate registration
• Affiliate dashboard
• Visit tracking
• Commission tracking
• Conversion rate stats
• Default commission rate
• Referral cookies
• Manual commission payments
• WooCommerce My Account integration
• Refund-related commission handling

Free-version limitations

The free version is focused on core WooCommerce affiliate tracking. More advanced commission controls, automation, reporting, and program-management options are reserved for the premium version.

About the Free Plan

YITH WooCommerce Affiliates has a free version available on WordPress.org. A premium version is available for more advanced WooCommerce affiliate features.

5. Affiliates by itthinx

Affiliates by itthinx is a free/open-source WordPress affiliate system for creating and managing an affiliate marketing program.

It gives site owners a foundation for affiliate dashboards, referral links, affiliate approval, notifications, and integrations through its extension ecosystem.

This plugin is a good fit for WordPress users who want an open-source affiliate system with a path to more advanced versions.

Main Features

• Free and open-source plugin
• Affiliate dashboard
• Referral link sharing
• Affiliate approval
• Affiliate notifications
• API for ecommerce and membership integrations
• Template-based dashboard sections
• Pro and Enterprise versions available

Free-version limitations

The free plugin provides the core affiliate framework, but deeper ecommerce or membership integrations, advanced reporting, and more sophisticated program controls may require extensions or the Pro or Enterprise editions.

About the Free Plan

Affiliates by itthinx has a free WordPress.org plugin. Pro and Enterprise versions are available for businesses that need more advanced affiliate management features.

How to Choose the Best Free WordPress Affiliate Plugin

Choosing the best free WordPress affiliate plugin depends on what you need the free version to do.

Before choosing a plugin, you can ask these questions:

• What kind of affiliate program are you launching?
• Do you need referral links, coupon tracking, or both?
• What action should trigger a commission?
• Do affiliates need a dashboard or portal?
• How will commissions be reviewed and paid?
• What limitations appear in the free version?
• Could the program grow into referrals, partners, customer rewards, or other incentive models later?

How to Create a Free WordPress Affiliate Program With Siren

Use Siren to create your affiliate program, define attribution, set reward logic, and manage approvals.

Step 1: Start with Siren’s Free Plan

If your site runs on WordPress, Siren gives you a free starting point for creating an affiliate program inside your existing WordPress environment.

This is useful if you want to launch without committing to a large affiliate platform upfront, while still keeping room to expand into more advanced incentive programs later.

Step 2: Define What Action Should Trigger a Reward

Decide what affiliates should be rewarded for. That might be a completed purchase, a qualified lead, a subscription signup, an account upgrade, or another measurable action.

With Siren, the goal is to connect the event, the credit, and the reward so your affiliate program has clear rules from the beginning.

Step 3: Invite Affiliates and Review Rewards

Invite your first affiliates, share their referral links or campaign assets, and start tracking activity through Siren.

As rewards are generated, you can review whether each reward meets your program rules before approval. Over time, you can expand beyond one affiliate program into referrals, partner incentives, customer rewards, revenue share, royalties, commissions, or performance bonuses.

Start Free Today With Siren →

Final Recommendation

A free WordPress affiliate plugin is a smart way to test affiliate marketing without adding a large software cost upfront.

If you only need a basic affiliate program, several free plugins can help you create affiliate accounts, track referrals, and manage simple commissions.

But if affiliate marketing is part of a larger growth strategy, it is worth choosing a tool that can support what comes next. Your first program may start with affiliates, but later expand into referrals, influencer rewards, customer rewards, partner incentives, revenue share, royalties, commissions, or performance bonuses.

That is where Siren fits best. You can start with a free WordPress affiliate program and build toward a more flexible incentive system as your programs become more sophisticated.