vcfanno
The premium Open Source alternative to Ensembl VEP
🎯 Best for:High-throughput sequencing facilities needing to annotate millions of variants quickly.
What is vcfanno?
A multi-threaded Go application that annotates VCF files using data from multiple external genomic formats like BED and Tabix. It allows users to perform complex operations like min, max, or mean on overlapping genomic intervals.
Tech Stack
GoBiology & Biotechnology
Why vcfanno?
- • Extremely fast multi-threaded execution
- • No complex dependencies (single binary)
- • Supports custom post-processing via Lua
Limitations
- • Configuration files can be verbose
- • Requires pre-indexed resource files
- • Limited built-in biological effect prediction
2/24/2026
Last Update
56
Forks
37
Issues
MIT
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to vcfanno instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on Ensembl VEP)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%