Sorta unrelated, but I've been watching Lychee for a while now, and will eventually get around to trying it.
I like to have file level backups of my images/videos from my phone, and I want a continuous sync. I had used owncloud for a while, but owncloud would crap out on me about every 2 months and it was just too painful. Plus owncloud keeps files in it's own directory structure, which I didn't like.
For the past few months I've actually been using the plex app (android) to auto-sync pictures to plex, which has a directory mounted back to my user drive. To my knowledge, no compression...but not getting any videos auto-uploaded.
Thus, I'm still not at the perfect solution for me. What I'm wanting to see with Lychee is whether or not you specify a directory, and it pulls from that...or if you have to upload through the webUI and it manages the files too. If not the latter, then I can just setup a continuous sftp sync when on wifi. I'd rather not have sftp open to the world, but I'm not sure how else to accomplish what I'm wanting to do.
My big concern now is my wife, whose iPhone 6 is 1.5 years old, and has several hundred images and videos. I'm worried she's going to break or loose it any day now, and she'll put me through hell if she lost everything. I don't want to back up to iCloud, Google, etc...but I want to have the files be placed inside her user drive, through some sort of application. So that way if she's on wifi, the photos are instantly uploaded to my NAS, and accessible from her computer (user drive is mounted via NFS). Doubt she will ever get prints from phone photos (she owns a Nikon D800 and a D7000...), but I want to have full quality images (I have plenty of space).
Maybe one day I will find my perfect solution...
When I use OpenELEC (XBMC) I sometimes have better luck with the Zeroconf Browser.
You still can't install plugins? Try making a simple jail if that works.
For web sharing I'd recommend OwnCloud. I don't use plugins much, instead I have a jail with apache for stuff like rtorrent, syncthing, lychee photo gallery, calibre ebooks feed, etc.
The closest to this that I have found is Lychee, you can tag them and search them from a nice ui, it's self hosted.
And picapport with auto tagging, so you don't have to manually set every photo.
Personally I don't use anything, just a file with all of my photos, Primary because I am lazy, the second reason is that I don't have much storage on my single 1TB drive and if I build a photo library I want to do it right with RAIDz2, propel backups, and a more secure network, until then a simple folder does the job for me.
Agreed with /u/TheJack360 that we need more details about your requirements. Is it more space you need or mirroring or both?
Regarding the photo sharing, do you want to host this? Would something like Lychee fit the bill?
Gosh! It's loading the full images all the time. I suggest either optimising the thumbnails before/during upload (php) OR use this: http://lychee.electerious.com/ as it's pretty damn amazing and it'll probably solve your problem.
Any good? Need more?