ASTRONOMY

Astrodynamics.jl :: An astrodynamics library in Julia.
Cosmology.jl :: Cosmology calculator for Julia.
JPLEphemeris.jl :: The JPL Development Ephemerides are the results of simulations of the Solar System used for spacecraft navigation and astronomical purposes.

BIOLOGY

Bioinformatics, Biotech, Genetics, ....

BioJulia on github :: https://github.com/BioJulia/. The GoogleGroups mailing list/forums:: https://groups.google.com/forum/?fromgroups#!forum/biojulia-dev
JuliaBio on github :: https://github.com/JuliaBio. The GoogleGroups mailing list/forums:: https://groups.google.com/forum/#!forum/julia-bio
Bio.jl :: Bioinformatics and Computational Biology Infrastructure for Julia.
BioSeq.jl :: Julia's package for working on Bioinformatics with DNA, RNA and Protein Sequences.
Circuitscape.jl :: The Julia implementation of the Circuitscape lib in Python that uses electronic circuit theory to solve problems in landscape ecology.
FastaIO.jl :: Utilities to read/write FASTA format files in Julia.
GaussDCA.jl :: Multivariate Gaussian Direct Coupling Analysis for residue contact prediction in protein families.
GeneticAlgorithms.jl :: is a lightweight framework that simplifies the process of creating genetic algorithms and running them in parallel.
Phylogenetics.jl :: The Julia package for analysis of evolution and phylogeny
Pagel.jl :: can detect correlated evolution on phylogenies
SpikeSorter.jl :: Spike sorting tool for experimental neuroscientists
smoothlife-jl :: is an implementation of the SmoothLife algorithm in Julia.
SeqUtils.jl :: Seqencing analysis Utilities for Julia

ChemicalKinetics.jl :: Simulation, Bayesian inference and Bayesian model selection for chemical kinetics in Julia.
Qlab.jl :: is a data manipulation and analysis tool based on the Savitzky–Golay filter - a digital filter that can be applied to a set of digital data points for the purpose of smoothing the data to increase the signal-to-noise ratio without greatly distorting the signal. Savitzky and Golay's paper is one of the most widely cited papers in the "Analytical Chemistry" journal.
Synchrony.jl :: Coherence/phase-locking statistics in Julia.