Journal TOCs allows you to set up RSS feeds for several journals across multiple publishers, all at once. It contains articles' metadata of tables of contents for over 26,842 journals directly collected from over 2604 publishers. For detailed instructions, click here.
Though not required to use the service, a free Journal TOCs account will allow you to follow up to 30 journals and:
JournalTOCs allows you to search for journals by title or ISSN, as well as articles using keywords.
You can also browse subjects and publishers:
Check a box to follow the journal:
After following a journal, click "Save & Export" to export the feed to your RSS reader, or check the "Email Alerts" box to set up email alerts.