The website is about SeqAn, an open-source library that provides efficient algorithms and data structures for analyzing biological sequences. The library is designed to offer high performance, generality, extensibility, and integration with other libraries. SeqAn aims to simplify the development of software tools without sacrificing performance in data structure handling. It offers various data structures and core algorithms for sequence analysis, such as unified interface searching, string indices, succinct data structures, pangenomics algorithms, pairwise multiple alignments, approximate string searches, and filter algorithms. Additionally, SeqAn supports modern hardware technologies like SIMD vectorization and multicore processing for faster input/output times while dealing with large sequencing data. The website also provides information on supported modules, available data formats supported by the library as well as applications developed by different scientific groups using this efficient toolset.