Analytical chemistry, Cheminformatics, Physical/Organic chemistry, Crystallography, Nanochemistry, Quantum/Nuclear chemistry ...

Chemistry

Chemfiles.jl :: A Julia binding for the Chemfiles library for reading and writing chemistry files.
Gillespie.jl :: Stochastic Gillespie-type simulations using Julia.
MethylUtils.jl :: Utilities for bisulfite sequencing data.
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.

Material Science

BucklingOfPipes.jl :: This package investigates the buckling behavior of composite pipes, e.g. in long horizontal reach holes.
ClassicalLaminateTheory.jl :: Laminate model functions used in EDX course "AA432x Composite Materials Overview for Engineers" by K.Y.Lin.
Dimers.jl :: Oligomers with two structurally similar monomers. See, http://en.wikipedia.org/wiki/Category:Dimers_%28chemistry%29

ChemicalKinetics.jl :: Simulation, Bayesian inference and Bayesian model selection for chemical kinetics in Julia.
HydrocarbonNets.jl :: Artificial Hydrocarbon Networks (AHNs) in Julia.
Jumos.jl :: JUlia MOlecular Simulation package.

DynamicTimeWarp.jl :: Implement Dynamic Time Warping for sequence alignment in Julia.
Cliffords.jl :: This library allows for efficient calculation of Clifford circuits by tracking the evolution of X and Z generators (the so-called tableau representation). Ref: http://en.wikipedia.org/wiki/Clifford_algebra
pyquante2 :: PyQuante is a Quantum Chemistry suite written in Python, with Julia support for HF and methods for integrals.
QSimulator.jl :: Unitary and Lindbladian evolution of quantum states in Julia.