A really handy feature for web-based data tools is ability to let your users download their data in a CSV format so they can edit it in Excel or their favorite spread sheet program. Fortunately this is also really simple to code:

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CSV Files

Typically a set of comma delimited [...]

This is a web-based tool for biologist to search our catalog of chromosomes for specific genetic sequences. It also supports plug-ins which can search for variations or meta-data for the specific sequences.

The framework is written in C++ and uses CGI to interact with the browser. It is a little uncommon (and [...]

Simple program written in Java to scan a FASTA file from NCBI for complete, partial and complementary palendrome patterns. It also outputs an easy-to-read HTML file with the results. 

Palendrome.java – source in Java