Dall-e and Craiyon are OpenSource and free to use, while Dalle2 is paid proprietary soft (well. not very expensive anyway). There are currently a lot of text to image AI services out there, some free and others paid soft, like Nightcafe, Deepdream generator, Dreamstudio, Wombo Art, etc. I think that in the future with this AI hype there would be a lot more AI apps and services. Currently I use an AI search assistant, still in alpha but works like a charm, apart it’s the most private search engine I know, no ads, no trackers and a own Reader mode for websites that permits to read the page without the need to enter.