ResearchTools DNA Sequence Toolkit

ResearchTools DNA Sequence Toolkit is a free, browser-based tool for basic DNA sequence analysis. It generates reverse complements, calculates GC content, and identifies CpG dinucleotides and their positions. The tool supports multiple FASTA sequences, IUPAC ambiguity codes, and downloadable FASTA and CSV results. Sequences are processed locally in the user's browser and are not uploaded to a server. The toolkit is intended for molecular biology research and education. It does not perform genome alignment, primer design, or DNA methylation measurement.