Yes, there is a tested and functional internal exchange, but will be released after the hybrid implementation (PoW 33,33 + PoS 66,66), the roudmap is a little late because it is working on the hybrid.
This hybrid was not originally on roudmap but the code is in constant development, will increase the WebDollar cryptocurrency power.
Being a revolutionary cryptocurrency, large exchanges need compatible integration scripts.
The WebDollar developer team has been working on developing integration scripts by building their own exchange, which will then be easily adapted to large exchanges and the listing will be massive.
Be patient, good things happen slowly but surely.