Dash uses the X11 algorithm, which uses 11 different algorithms that are chained together (unlike unlike many other Proof of Work (PoW) networks that use just a single algorithm).
Mining equipment marketed for Dash can be used for any other cryptocurrency that also uses the X11 algorithm. In addition to Dash, this includes the cryptocurrencies listed below.
Note that inclusion in this list does not denote that the crypto network still has active development, only that it utilized X11 when formed. If the cryptocurreny is listed at CoinMarketCap.com (as of May, 2019) it is hyperlinked to its page on that site.