A lot of film scanners will come with some scanning software included, this might be first-party scanning software from the company that makes the scanner, or they might lean on third-party software which has the benefit of working on any supported scanner from multiple brands.
Scanner software can range in quality and functionality, with third-party software typically offering more control over your scans, but sometimes this choice can be overwhelming. First-party software is usually simpler to use and less daunting with options.
Two of the best choices for third-party scanning software are SilverFast by LaserSoft Imaging or VueScan from Hamrick. Silverfast is often bundled with more advanced scanners, it is very powerful although its dated interface isn't for everyone. Vuescan offers a cleaner interface and similar advanced features but must be bought as a separate purchase from the scanner.