Péter Jacsó, ticTOCs, Péter's Digital Reference Shelf, April 2009. A review of the OA ticTOCs current awareness service. (Thanks to ResourceShelf.)
... There are only a few functionally similar digital alternatives to what ticTOCs offers – and most of them are not free. ...
There are some discipline-specific, free TOC services, such as the one in astronomy and astrophysics from the ADS (Astrophysics Data System). It covers 25 discipline-specific journals, plus Science and Nature. It is an additional free service of the excellent digital pre-print depository.
The closest free service to ticTOCs is the splendid Feed Navigator of the National Library of Health Sciences (Terkko) in Finland, which covers about 4,300 sources. However, it is limited to health sciences – and luckily, to library and information science ...
In spite of some deficiencies, ticTOCs is an excellent free service ...
The open access movement:
Putting peer-reviewed scientific and scholarly literature
on the internet. Making it available free of charge and
free of most copyright and licensing restrictions.
Removing the barriers to serious research.
I recommend the OA tracking project (OATP) as the best way to stay on top of new OA developments. You can read the OATP feed on a blog-like web page or subscribe to it by RSS, email, or Twitter. You can also help build the feed by tagging new developments you encounter.