Booqable is a rental marketplace software that enables businesses to build a marketplace to manage rental operations efficiently. The software is best suitable for small scale businesses. However, as a SaaS based solution it may become costlier in the long run for future growth. Here are a few alternatives to help you out:

1. Yo!Rent - https://www.yo-rent.com

Yo!Rent is a robust, white-label rental marketplace software that allows businesses to launch their rental website across various niches such as equipment, vehicles, fashion, adventure gear, furniture, and the list goes on. It is a self-hosted solution that integrates advanced rent-centric features and business APIs, with access to all right from the beginning.

The self-hosted solution requires only a one-time upfront payment for a lifetime software license, with no recurring monthly or annual fees. In contrast, SaaS solutions involve ongoing subscription costs that can add up over time. Plus, the solution supports immense scalability & customizability.

2. EZRentOut:
EZRentOut is also a comprehensive solution to launch rental platform known for its robust asset tracking and management capabilities. However, it is also a SaaS-based solution, whose lowest package costs $79/month.

3. Rentrax:
Rentrax rental software is a cloud-based sports equipment rental solution that allows you to manage your sports equipment business from anywhere. The solution integrates features such as inventory management, online bookings, and automated payments to enhance the efficiency of the platform.

4. HireHop:
HireHop is particularly suited for businesses in the equipment rental industry. This cloud-based solution typically allows to build marketplaces to rent out equipment like AV gear, construction tools, party supplies, and more.

5. Rentman:
Rentman is a professional rental software for equipment and party rentals. The software streamlines rental operations with features like project management, real-time equipment tracking, and team collaboration tools. However, it can be ideal for large-scale businesses with already a good hold in industry.