Introducing my pixel cat particle editor! pixel cat is particle editor that can be used to make different pixel effects. I've added a lot of the basic features. Here's a list.

•  You can import your own images and use them as particles
• You can  pick pre-made particle shapes
• Particles have different configurations that you can edit, speed, gravity/force, size of the particle, its lifetime, color, etc..
• You can export the configurations you make into a json file
• You can add 'pixelization' effects to your particles
• Support for mac, windows, and linux

Here are the things I want to get done, then I can release a beta for everyone to check out

• Fine tune rendering. I need a way to combine all the images created in the rendering process to make a spritesheet
• Need to add opacity to my color selector
• Fine tune the rendering mode so that you can see exactly what frames are going to be used in the sprite sheet.

Here's a video on it, I describe the features on it.  Do you want any specific functionality added? Shoot me a message, or let me know in the comments below. Let me know what you all think!