Uploadcare is a competitor of Uppy's parent company: Transloadit. Fortunately the space is large enough that we don't care for cutthroat mentalities. I think so far both companies has said positive things about each other, and that's a tradition I'd like to uphold! I think their file uploader looks very good and I marvel at their marketing. Their engineering team also looks like they could all be respected co-workers. So a hat-tip to them! I don't think many people will have tried both since Uppy (being recommended for production) is rather new, but I'd also look forward to hearing about experiences with that.

Some differences between the uploader widgets themselves:

- Uppy is open source and can be used with your own back-end. Free as in liberty & pizza

- Uppy is vanilla JS with support for React/Native

- Uppy has resumability (via the open standard https://tus.io) and can recover from browser crashes / accidental navigate-aways. Uploads will just continue where they broke off

- Uppy supports _less_ external sources (e.g. 1.0 comes with support for Dropbox, Instagram, Google Drive, but we don't yet have support for e.g. Facebook, or Google Photos)

Some differences between the companies/back-ends (should you optionally use Uppy+Transloadit to handle the uploading, fetching from e.g. Instagram, and encoding):

- Transloadit offers more encoding features (Uploadcare is making good progress tho, they recently added video encoding for instance). Those features can be combined in workflows. So you leave a JSON recipe ("Template") with us that says: for every video, take out thumbnails, watermark some of those, detect faces in others, store those separately, all in one 'job', or how we like to call it: "Assembly"; because it can be a chain of virtually infinite jobs that take the output of other jobs as input for their own

- Transloadit does _not_ offer a CDN, instead only exports results to storage/buckets you own (not sure if we'll add this)

Just a _few_ differences, there are more. But it seems they are getting fewer and maybe in 5 years we'll be identical companies : ) but yeah so there's some time left until then that we can still afford pleasantries :D