You can make your own on mrsriley.com. But it's not a full symbol library more photos and pictures people have shared. You can upload pics from google images or your own photos. Boardmaker and communication in print are main ones used in schools etc. I got my local library to buy it (got support from local SLT etc). We now have CIP in all libraries and also gets used by those with dementia etc not just SEN. Sparklebox has quite a few free ones.