ClickFunnels, a prominent sales funnel builder, has created a niche in online marketing. Despite its popularity, many businesses and individuals are on the hunt for ClickFunnels alternatives for diverse reasons like cost to functionality.

One famous alternative is HBA Funnel Builder. Offering the same core functionality as ClickFunnels, HBA Funnel Builder distinguishes itself by offering a flat fee pricing structure. Unlike ClickFunnels, which comes with different pricing tiers, HBA Funnel Builder offers a single, affordable plan, making it a go-to option among novice entrepreneurs and small businesses.

Another compelling ClickFunnels alternative is Systeme.io. Formulated by veteran internet marketer Aurelian Amacker, Systeme.io boosts the traditional sales funnelling experience by integrating tools for email marketing, course hosting, and affiliate management. With a more holistic approach to sales and marketing, Systeme.io makes a strong argument for businesses looking for a more rounded platform.

Coming to features, ClickFunnels gives a broad range of functionalities. Its major features include landing pages, sales funnels, webinars, and membership sites. Moreover, it also has a remarkable affiliate management tool, which is a major selling point. On the other hand, HBA Funnel Builder, while being a cheaper alternative, meets ClickFunnels' core offering. With a focus mainly on sales funnelling, it may lack in other peripheral features like affiliate management and webinars.

On the flip side, Systeme.io, while matching ClickFunnels' core offering, takes a leap ahead by providing functionalities like email marketing and online course hosting. It's these extra features that make them a go-to choice among businesses that seek a more holistic platform for their online marketing efforts.

In conclusion, while ClickFunnels has a strong standing in the online marketing world due to its unrivalled features, replacements like HBA Funnel Builder and Systeme.io are achieving popularity due to their unique propositions. The pick between these platforms depends on your specific business needs and website budget. Whether you're a start-up looking for an affordable sales funnel builder or an established business in need of a complete marketing platform, there are options available that can meet your needs adequately.