Chlorine is a powerful oxidant.
Ozone is also a powerful oxidant and reported to react rapidly with elastomers and other unsaturated polymers.
Ozone is a powerful oxidant (far more so than dioxygen) and has many industrial and consumer applications related to oxidation.
Baeyer's reagent is an alkaline solution of potassium permanganate, which is a powerful oxidant.
Barium manganate is a powerful oxidant, popular in organic synthesis and can be used in a wide variety of oxidation reactions.
Dess-Martin periodinane (1983) is another powerful oxidant and an improvement of the IBX acid already in existence in 1893.
Unlike some other metal fluorides, WF is not a useful fluorinating agent nor is it a powerful oxidant.
Chromium(VI) compounds are powerful oxidants at low or neutral pH.
For example, the hydroxyl is a powerful, non-selective oxidant.
It is also a powerful oxidant.