alexdobin/STAR

Health v2 · maintenance only

Adoption not part of the score

2241 stars · 550 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

STAR (Spliced Transcripts Alignment to a Reference) is a fast, splice-aware aligner for RNA-seq reads written in C++. It aligns reads to a reference genome, detecting splice junctions and producing alignments for downstream transcript quantification.

Use cases

• align RNA-seq reads to a reference genome
• detect splice junctions in transcriptomic data
• generate alignments for gene expression quantification
• process bulk RNA-seq FASTQ files
• build a genome index for spliced alignment

When to choose

• you need a fast, accurate splice-aware aligner for RNA-seq data
• you are running a standard bulk RNA-seq pipeline (e.g., with featureCounts, RSEM, or DESeq2 downstream)
• you have sufficient RAM (tens of GB) to hold a pre-built genome index
• you want a widely used, well-validated tool with an active community

When to avoid

• you are aligning small RNA-seq or very short reads where specialized aligners may be better suited
• your machine has limited memory, since STAR's genome index can require large amounts of RAM
• you need a cloud-native or GUI-based tool rather than a command-line executable
• you are working on Windows natively, as pre-built binaries target Linux and macOS

Facets

cli-tool · maturity active

parser search-engine developer-tools bioinformatics cli cpp rna-seq splice-aware-alignment genomics bioinformatics sequence-alignment transcriptomics command-line linux macos

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markdown · JSON · MCP: product_card(name="alexdobin/STAR")