The International Organisation for Atomic Energy IAEA published the latest (2020) update of its report on Advances on Small Modular Reactors. In the report is a list of all SMR projects. This list is updated every 2 years. In this report is also a list of all (small) Molten Salt Reactors officially recognised by the IAEA.
Except this table at the beginning, the report also contains a description of all those projects. By the IAEA are thus 10 MSR project officially recognised most of which are stiull a (advanced) design stage. Only the Japanese ITMSF by Fuji is in its test face.
Source:
Advances in Small Modular Reactor Technology Developments
A Supplement to: IAEA Advanced Reactors Information System (ARIS) 2020 Edition