In addition to Scholar One (by Thomson Reuters), OJS (non-profit open source software) also offers a journal hosting service through the creator of the software, PKP Publishing Services, should you want to explore hosting with them. See https://pkpservices.sfu.ca/content/journal-hosting
For an annual fee PKP offers the following (basic package $ 850.00 or R 12 179.00 per annum):
- install OJS on their servers
- get you started with initial setup and training support
- provide daily backups (seven days incremental, other regimens available for an additional fee)
- upgrade the software
- ensure that your content is highly visible on the web.
Alternatively, OJS software can be downloaded on an institutional server, or hosted on a server in the cloud (e.g. the ASSAf OJS Journals).