NCBI's sequence similarity search tool designed to support analysis of nucleotide and protein databases.

Formating of multiple sequence alignments to a color postscript file. Can include graphical features by using PDB entry.

Access to Smith-Waterman-based FDF sequence comparison program, with excellent explanation of when to use it vs. BLAST - from the Univ. of Lausanne, FR.

Sequence comparision and search programs, including the rigorous Smith-Waterman algorithm (in FastA and Ssearch) - from the IGH, Montpellier FR.

Genome-Wide BLAST search for similarity searching against genes or proteins. Integrated with multiple alignments and phylogenetic tree capabilities.

This is a server for structural superfamily assignments to protein sequences using Hidden Markov Models. The services included are: -homology searching -alignments -genome assignments

Utility for online manipulation of Blast results. Results organized in a table format.

Software toolkit for building and using motif-based hidden Markov models of DNA and proteins - from the Univ. of California-San Diego.

Implementation of hidden Markov models for sequence analysis. Free UNIX software for nonprofit groups, and sequences can be submitted online.

Detection and assessment of similarity between distantly related sequences by means of a variety of remotely-executable software - from the Swiss Inst. for Experimental Cancer Research.

Sensitive, selective, and rapid sequence database searching with gapped alignments - from Washington Univ.-St.Louis.