FAMSA can now be used in a web browser: refresh-bio.github.io/tools/famsa/ It is compiled to WebAssembly, so all computations run locally on the device - your data never leaves your machine. Sample timings (workstation, 16 threads) for cys family (56k seqs): 150s (default) or 20s (with medoids).
FAMSA — Multiple Sequence Alignment
refresh-bio.github.io