An article processing charge (APC) is a fee paid to the publisher to make an article immediately and freely available online.
Publisher APC websites:
- American Physical Society (APS)
- Brill Online Journal Collection
- Cambridge University Press (CUP)
- Emerald
- IEL (IEE/IEEE Electronic Library)
- Institute of Physics (IOP)
- Nature All Journals
- Science Online
- ScienceDirect (Elsevier)
- SPIE Digital Library
- Taylor & Francis Online
- Wiley Online Library