Known for its efficacy as a sales funnel builder, ClickFunnels has emerged as a staple in the landscape of online marketing. Despite its reputation, many businesses and individuals are searching for ClickFunnels alternatives for a range of reasons such as cost to functionality.

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

Another compelling ClickFunnels alternative is Systeme.io. Designed 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 enables a strong statement for businesses looking for a more comprehensive platform.

Coming to features, ClickFunnels delivers a wide range of functionalities. Its key features include landing pages, sales funnels, webinars, and membership sites. Moreover, it also has a highly-rated affiliate management tool, which is a major selling point. On the other hand, HBA Funnel Builder, while being a cheaper alternative, matches 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 additional features that make them a preferred option among businesses that need a more holistic platform for their online marketing efforts.

In conclusion, while ClickFunnels keeps a strong standing in the online marketing world due to its incomparable features, competitors like HBA Funnel Builder and Systeme.io are achieving popularity due to their unique offerings. The selection 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 full-featured marketing platform, there are options available that can meet your needs adequately.