WordPress Gallery Block: The Gallery Block is a built-in feature in WordPress that allows you to create simple image galleries within your posts or pages. You can add multiple images, captions, and adjust the layout.

Envira Gallery: Envira Gallery is a popular plugin that allows you to create beautiful and responsive image galleries. It has a drag-and-drop builder, various layout options, and customization options for your galleries.

NextGEN Gallery: NextGEN Gallery is another popular WordPress gallery plugin. It has various layout options, including slideshows, thumbnails, and mosaic galleries. You can also add watermarks, social sharing buttons, and e-commerce integrations.

FooGallery: FooGallery is a responsive gallery plugin that comes with various layout options such as masonry, grid, and polaroid. It also has various customization options such as hover effects, captions, and lightboxes.

Jetpack Tiled Galleries: Jetpack is a plugin that comes with various features, including Tiled Galleries. This feature allows you to create beautiful and responsive image galleries with various layouts such as square, mosaic, and circle. You can also add captions, links, and social sharing buttons.