@zapta - Blinky tape is more streamlined in terms of just plug it in and go but it's a lot more limited in what you can do with it.
The BlinkyTape is a single strip of 60 WS2812 (NeoPixel) LEDs, soldered directly to the controller board. Power is provided through USB only and you cannot add more pixels to the strip. There is no way to use any other type of LED strip or pixel density. They have a graphical UI for designing animations and a very simple API for coding them directly.
The AllPixel works with 8 different types of LED strips, including WS2812... and soon to be 12 types, if we hit our first stretch goal.
It can handle up to 680 pixels per controller and can provide power either through USB directly (for short runs) or with the on board 5A barrel jack.
We currently have no graphical designer (though we DO have a graphical display simulator) but have an extremely robust and feature filled programming API that is quite mature.
I'm not trying to knock the BlinkyTape... I have one and think it's awesome. Especially for those who want no programming involved. The AllPixel, however, is much more capable, but for slightly more advanced makers.
The FadeCandy is sort of between the BlinkyTape and AllPixel (with a few exceptions).
FadeCandy is also only for WS2812 strips. It can only handle up to 512 pixels but in 8 groups of 64. This is done for the sake of speed... WS2812 is really slow compared to others like the LPD8806 which can be clocked at up to 30MHz, whereas the WS2812 is limited to 800kHz. To get around this, they drive 8 lines at a time.
In practice, the AllPixel is a bit slower than the FadeCandy when updating WS2812 pixels, but my general opinion is that if you really need speed you should use something with a faster clock rate. I can push my 24x24 LPD8806 display at well over 100 fps or more (depending on the animation) with no problem. The FadeCandy also has hardware temporal dithering for a little better color. The AllPixel does not currently, but I'm actually working on that right now.
But the AllPixel can do more pixels (and in one continuous strip for easier wiring) and has built in power input including the ability to power from USB, which the FadeCandy does not. Aside from that, all of the same advantages over the BlinkyTape I mentioned above still apply.