If you want a tool to combine multiple shots into one, Fotor is a good candidate. This all-in-one online photo editor has a lot of heavy-duty features, including a batch photo editor, AI-powered photo optimization and a big library of presets and filters. You can also make collages with Fotor, so it's good for photo editing, too. It runs on Windows, Mac, iOS and Android devices, so you can use it on whatever hardware you like.
Another good option is Pixlr. Pixlr offers a broad range of photo editing tools, including a batch editor for editing groups of photos. Its AI generative tools let you do things like swap faces, erase objects and apply transformative editing. Pixlr works on the web, desktop and mobile devices, with a 7-day free trial and relatively cheap pricing plans.
For a more accessible and feature-rich option, check out InPixio. This service offers a variety of heavy-duty editing options, including photomontage design, background removal and sky replacement. It runs on multiple platforms, and offers free and paid versions, so you can pick the level of functionality you need.