ClickFunnels, a remarkable sales funnel builder, has established itself in online marketing. Despite its fame, many businesses and individuals are seeking ClickFunnels alternatives for various reasons such as cost to functionality.

One famous alternative is HBA Funnel Builder. Offering the same fundamental functionality as ClickFunnels, HBA Funnel Builder excels by offering a flat fee pricing structure. Unlike ClickFunnels, which comes with different pricing tiers, here HBA Funnel Builder provides a single, affordable plan, making it a favourite among start-ups and small businesses.

Another compelling ClickFunnels alternative is Systeme.io. Formulated by veteran internet marketer Aurelian Amacker, Systeme.io amplifies 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 statement for businesses looking for a more rounded platform.

Coming to features, ClickFunnels gives a huge range of functionalities. Its main features include landing pages, sales funnels, webinars, and membership sites. Moreover, it also has a noteworthy 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 preferred option among businesses that are in search of a more robust platform for their online marketing efforts.

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