FasterCures, a center of the Milken Institute, is currently tracking the development of treatments and vaccines for COVID-19 (coronavirus). This tracker contains an aggregation of publicly-available information from validated sources.
According to Milken there are:
316 Treatments in 7 categories are being developed now.
212 Vaccines in development in 9 categories. 34 of which are now in testing.
The leading vaccine candidates as of mid September 2020 are listed here.