list free image-to-image generators. all for free, without registration, censoring or limitations please.

Here are some free image-to-image generators that do not require registration or have any major limitations:

**DeepAI's Image-to-Image**: This tool allows you to upload an image and apply various transformations without requiring an account.

**Artbreeder**: While it does have some social features, you can create images based on existing ones. You can manipulate images with sliders and don’t need an account to experiment with many features.

**Pixray**: This is an open-source tool that can generate images based on textual prompts or existing images. You can run it locally or use hosted versions that may not require sign-up.

**Craiyon** (formerly known as DALL·E Mini): While it primarily generates images from text prompts, you can use it creatively for image variations as well. No registration is required.

**RunwayML**: Offers a variety of tools for image manipulation, including style transfer. While some features may have limitations, it is often available for different uses without registration.

Please verify the current status and availability of these tools, as they may change over time. Also, be mindful of the usage rights and policies associated with any generated content.