Genome assemblers take partial sequences of a genome and assemble them to form a larger contiguous sequence – ideally, the whole genome.
The best assemblers work with both short reads (e.g. Illumina) and long reads (e.g. Oxford Nanopore) to quickly assemble a genome (e.g. Unicycler).
If you want to use an assembler that's not listed here, let us know! It might even be already available on our infrastructure but not listed.