If you're looking for a PhotoZoom Pro 9 alternative, Topaz Labs has a range of professional-grade photo editing software, including Gigapixel 7, which can increase image size up to 600% with newer AI models. It can also process in batches and link to Adobe Photoshop and Lightroom, so it's a good option for pros who need to enlarge images and process them.
Another good option is Let's Enhance, an AI tool that can upscale and otherwise improve blurry or low-resolution photos to high resolution. It can process in batches, apply HDR filters and link to APIs for business uses, so it's a good option for creative pros like those in printing and e-commerce.
If you're on a tighter budget, VanceAI offers a variety of photo enhancement tools, including upscaling, sharpening and background removal. It can process in batches and offline, so it's good for people who have a lot of photos to process. VanceAI offers flexible pricing plans, starting at $4.95 for 100 credits.
Last, you could try ON1, which has a full-featured photo editing software package with AI image enhancement options. ON1 can process RAW files with the latest technology and offers one-click enhancements with presets expertly curated. It can run as a standalone app or plugin, so it's a good option for photographers who want to keep control over their image processing.